11th Global Summit on Aquaculture & Fisheries May 24-25, 2018 Osaka, Japan

Biography:

Jacqueline Marleen Francischa Sahetapy has completed her MSc at the age of 34 years from Bogor Agricultural University  School of Aquaculture Science. She is currently working as a lecturer at aquaculture study program, Fisheries and Marine Science Faculty Pattimura University Ambon Indonesia. She has published 2 paper in international journal and others in national proceedings and local journal. She has participated in 3 international conference and 2 paper are on the way of publication. Her research interest Recirculating Aquaculture system (RAS), aquaponic and abalone culture in Net Floating Cage.

Abstract:

Biography:

Dr Rahim Peyghan has completed his PhD at the age of 27 years from Tehran University-Iran  and 6 months postdoctoral studies from Aquaculture school, Lanceston, Tasmania. He is the professor of Shahid Chamran University. He has published more than 30 papers in reputed journals and has been authored and published 8 books. 

Abstract:

This study deals with the details of cloning, expression of recombinant ompTS of Aeromonas hydrophila and studied the immunogenicity of this protein in common carp. Escherichia coli strains DH5α and BL21 (Pasture institute, Iran) were used for cloning and expression of ompTS. For vaccination and challenge study, 270 fish were maintained under laboratory conditions. Blood sample was taken from fish of each group and assayed by enzyme linked immunosorbent assey (ELISA). The LD50 data revealed that LD50 value of Aeromonas hydrophila in this study was about 108.5cfu. We isolated A. hydrophila in kidney tissue of fish, indicating that the death was directly related to A. hydrophila. Significantly higher mortalities occurred in control groups (PBS, PBS+adjuvant) (76.66%, 56.66%) compared with fish vaccinated with recombinant OmpTS protein purified with NI-NTA column with(13.33%) and without adjuant (16.66%), and electroeluted method respectively (13.33%) and (23.33%), with and without adjuvantrespectively (PË‚0.05) (Figure 10 and 11). There was no significant differences between fish mortalities vaccinated with recombinant protein in both method of purification, with and without adjuvant (P≥0.05). The RPS value of fish vaccinated with NI-NTA OmpTS, NI-NTA OmpTS plus adjuvant, OmpTSelectroeluted and OmpTSelectroeluted plus adjuvant were 78.26%, 82.61%, 69.57 and 78.26% respectively. There was a significant differences between the RPS of fish vaccinated with recombinant protein in both method of purification, with and without adjuvant and control group (PË‚0.05).

Biography:

Dr M. Nazrul Islam is the professor of the Department of Zoology at the University of Rajshahi, Bangladesh

Abstract:

Shrimp is one of the leading exportable seafood products from where Bangladesh is earning about UD$ 500 million yearly contributing 3.78% to the GDP. Shrimp farmers follow the traditional and extensive farming practices and the average production is 275 kg/ha which is the lowest compared to other shrimp producing countries around the world this production rate is the lowest. Reasons of this low production are lack of better technology, dearth of quality seed and feed, and effect of shrimp disease. Small-scale organic shrimp farming practice introduced recently, has shown better production and profitability in four coastal sub districts (Upazila) of Sathkira district in the southwest part of the country. Three different farming practices were studied: (i) organic (ii) traditional and (iii) extensive or control farming. Farmers who are used to practice these farming systems were interviewed to collect different data. The data show that organic farmers are producing average 451 kg/ha which is 10.64% higher than the traditional, and 20.84% higher than extensive or control farming systems. Cost benefit analysis showed that organic farming is more profitable compared to other practices because of low input cost and premium price received for organic shrimp. Percentage of gross sale of organic cultured shrimp is 10% higher than traditional and 19.37% higher than control or extensive shrimp farming.

Biography:

Nishita Lal is pursuing her PhD in the field of crustacean molecular endocrinology from Vellore Institute of Technology, Vellore, TN, India, under the guidance of Dr. Anilkumar Gopinathan (Sr. Prof). She has published a review paper entitled “Nuclear Receptors, A Paradigm of Importance for Understanding Hormone Action in Invertebrates: An Overview on Crustaceans” and recently presented paper entitled “Ecdysteroid binding with the nuclear receptor (EcR) in Indian field crabs: First Time Report” is in the 7th National Seminar on Bioinformatics is yet be communicate for publication.

Abstract:

Artemia, the brine shrimp, is widely known as the live feed for finfish and shellfish aquaculture. A clear understanding of the moult, reproductive and developmental stages of a species in question is essential for maintenance of a sustainable stock of the brine shrimp which in turn is crucial for optimization of aquaculture. The present paper would address  the precise characterization of moulting, reproductive and developmental stages of Artemia sp. maintained under laboratory conditions. This study illustrates the stage dependent setogenic events of the telopodite which would provide us with an accurate and simple method for characterization of moult stages. The present study also focuses on the developmental stages of Artemia which would help us precisely identify the larval stages and the ‘age’ of the larvae, a basic, but key information for sustainable maintenance of its culture. The study also brings out a comparative account on the morphological features of the larval, pre-adult and adult stages of Artemia, which would be helpful in identification of the species. The study has also focused on the changes of pre-spawned and post-spawned eggs in laboratory – reared Artemia stock.

Biography:

Ritu has completed her B.Tech in Agricultural Engineering at the age of 22 years from Kerala Agricultural University and M.Tech in Aquacultural Engineering from Indian Institute of Technology Kharagpur. She is currently doing her Ph.D in Indian Institute of Technology Kharagpur. She has published a journal paper and presented her work in International Conference on Water- Pollution to Purification 2015.

Abstract:

Intensification of aquaculture practices in order to increase the production at par with the increasing demand has led to higher use of supplementary feeds. Feed costs has a significant share of 60-70% of the total production costs, so feed must be judicially applied without any wastage. Both overfeeding and underfeeding are not preferred; overfeeding leads to feed wastage while underfeeding affects the production. So feeding devices which will effectively dispense the feed in the ponds are of great importance. Demand type feeders have been found better than automatic feeders when feed wastage is considered but the automatic feeders help in dispensing fixed amount of feed at preset timings. Since most of the farmers in underdeveloped and developing countries can’t afford systems using high-end technology, simple innovations are necessary to meet the needs of small and marginal farmers. This study aims to develop a novel feeding system which will simply mechanize the current method of feeding practiced by the farmers and optimize the amount of feed dispensed, thus reducing the feed wastage. The designed feeder is mobile so it can feed aquaculture ponds of any size.  The prototype of the proposed design is under construction and will be rigorously tested in laboratory and field conditions.

Biography:

Completed 31 yrs of service as Scientist in Indian Council of Agricultural Research. Currently Principal scientist in Central Inland Fisheries Research Institute under ICAR and published more than 40 papers on fisheries, limnology and culture based fisheries system of freshwater reservoirs. 

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Biography:

Shyla Suganthi is currently working as Assistant Professor at Holy Cross College (Autonomous), Nagercoil. In 1997 she received her PhD for her research on the physiology and endocrinology of reproduction in brachyuran decapods from the University of Calicut, Kerala under the supervision of Dr. G. Anilkumar. She has been recognized as Research Guide (for PhD programmes) under the Manonmaniam Sundaranar University since 2008; three research students have been awarded PhD degree and currently she is guiding five students leading to PhD. She has also successfully completed 2 UGC research projects and currently sanctioned with SERB-DST project. She has 26 research publications to her credit in International journals of repute, and has presented/published 39 papers in International and National conferences.

Abstract:

Some brachyuran crabs inhabiting the coastal and intertidal regions, possesses glandular structures called Accessory Glands which are tubular entities, positioned at the posterior part of vas deferens. The morphology and structure of the gland are found to be species specific. In Parasesarma plicatum, the posterior vas deferens (PVD) is fringed with small pouch-like accessory glands. In other species such as Sarmatium punctatum., and Ocypode sp. the accessory glands appear as bunches of tubules placed at the distal PVD. Interestingly, in the crab Metopograpsus messor, there are seven long fasciculate tubules; in Grapsus sp., the Accessory Glands are seen as abundant number of tubes. Light microscopically and ultra-structurally, the glandular architecture and their mode of secretion appear diverse in different species. Principally, the secretory products of the accessory glands are protein and carbohydrate. Although the exact role of the accessory gland secretion in brachyuran crabs is still unclear, there are evidences to suggest that they may provide mechanical support for the safe transport of spermatophores in to the spermatheca of the female reproductive system during mating and thereby facilitates the gradual splintering of spermatophores to release free sperm. The accessory gland secretion is also suggested to assist long term sperm storage in brachyuran crabs.

Biography:

Dr.A.Chandrasekhara Rao, Asst.Professor, has completed his PhD from Central Institute of Fisheries Education (CIFE), ICAR, Mumbai. He has extensively worked in the marine fisheries research. He has gained experience in teaching, research and extension. He has guided 2 Ph.D. students as minor guide and 6 Post Graduate students as Chairmen of the advisory committee..He has published more than 15 papers in reputed journals, one book and editorial board member of repute.

Abstract:

Ultrastructural changes in the oocytes and hepatocytes in the female Epinephelus diacanthus were studied with the progress of maturation. Transmission Electron microscopic (TEM) observations revealed cytological changes associated with ovarian development. Nucleolus number increased in the Peri Nucleolus stage, which is an indirect indication of increase in protein synthesis with the onset of oogenesis. Zonation of yolk sphere and presence of microvilli in the Zona radiata were observed in mature oocytes. In comparision to the immature phase, mature/ripe stage hepatocytes showed greater development of both endoplasmic reticulum and increased density of mitochondria in the cytoplasm which is an evidence of progress in vitellogenin syntshesis. Yolk protein vitellogenin was partially characterized employing polyacrilamide gel electrophoresis (PAGE). Vitellogenin level of expression was increased with the maturation of gonads.

Biography:

A dynamic professional with over 34 years of rich indigenous experience in Teaching, Research, and Administration, Dr. Alka Parashar is a Ph.D. (Environmental Impact Assessment), M.Phil (Futurology) faculty of Engineering Science, D.A.V.V. Indore and M.Sc. Zoology (Fishes), Dr. H.S. Gour University Sagar, with expertise in the research fields of Simulation Modeling and Ecological Modeling for planning management and sustainable development, Modeling for environmental system’s assessment (Industrial and Mega-projects) environmental management (Aquatic resources and land use management), Biodiversity conservation, taxonomic identification and rehabilitation of Ichthyo fauna of reverine systems, fish genetic variability and commercialization of indigenous fish species with key focus on top line profitability & optimal utilization of resources in the education and research sectors.

Abstract:

Operanalization of sustainable development would entail search for innovative options that cause minimal environmental media and resource degration, while maximizing socio-economics benefits in terms of environmental planning, policies and system’s management. Computer Simulation modeling is identified as a powerful tool for charting out better options for sustainable development. The paper aims at exploring the utility of qualitative/semiquantative simulation modeling methods in innovative-strategic planning, management and development. The specific methods for modeling of aquapoics/aqualuture dynamics are investigated as cross impact simulation and system dynamics. For the sake of illustration a simulation model has developed for cost benefit and economics of aquaponic/aquaculture system of Tawa Command Area in India. The SD model is designed to develop and integrates the cause & effect relationships of the variables in pond dynamics, related issues to climate, farmers interest, peoples liking, demand, marketing and cost-effectiveness of Aqua/Aquaponic systems. The model has the potentiality to incorporate various policy options to improve Aquaculture/Aquaponic Systems for livelihood generation and sustainable development of the region. 

Biography:

AHMADI has completed his M.Sc and PhD from Kagoshima University, Japan in the field of Fundamental Fishing Technology. Formerly he worked for the Ministry of Marine Affairs and Fisheries, the Republic of Indonesia for 17 years. Among his appointments, he served as Member of the Regional Fisheries Policy Network (RFPN) for Indonesia in 2011 at the SEAFDEC Secretariat in Bangkok, Thailand. Currently he is a lecturer at Faculty of Marine and Fisheries of Lambung Mangkurat University and the Secretary of Fisheries Science Postgraduate Program. He actively writes academic papers and published them in reputed journals. He also serves as editorial team for Journal of Wetlands Environmental Management under the University.

Abstract:

In Japan, the spanner crab or the red frog crab Ranina ranina (Linnaeus, 1758), locally known as “Asahigani”, is an important edible crab for local people in Tanegashima island. We carried out trapping survey to determine the best way of catching for the crab using the baited tangle nets and pots from offshore Tanegashima. The baited tangle nets were made of PA nylon multifilament with five different mesh sizes (37.8mm, 50.5mm, 75.8mm, 97.0mm and 121.2 mm). While the pots were made of PE nylon multifilament with 15mm mesh size. Both traps were attached at 5 m intervals along the line randomly and were lowered onto the seabed for about 5-hr soak time before being taken. A total of 96 crabs R. ranina consisted of 61 males (64%) and 35 females (36%) was caught primarily with the baited tangle nets. The size frequency of males and females was ranged from 67.2 to 138.5mm and from 50.4 to 128.6mm respectively. In term of foraging behavior, males were more abundant in this area. The CPUE for the baited tangle nets was ranged from 2.8 ± 0.58 to 5.4 ± 2.41. The number of the legal-sized crabs ( 93mm) was half time higher than undersized crabs (< 93mm), and most of them were males. The use of a larger mesh size seems to prevent the crabs from further damage and is optimal with respect to clearing-time and escapement of the juvenile crab from the nets. None of R. ranina was found in the pots.

Biography:

Alexander Rantetondok has completed his PhD at the age of 54 years from Hasanuddin University and attended Exchanged Scienist sponsor by Japan Society for the Promotion of Science att Faculty of Fisheries, Nagasaki Universityand Tokyo University of Fisheries. He is the former Head of Fish Diseases and Parasites, of Hasanuddin University. He has published more than65 papers in reputed journals International) and  more than 30 papers in National Journals  and has been serving as an editorial board member of some Intrenational and National Journals..Hi is a Professor in Fish Disease and Fish. Immunology at Faculty of Marine Science and Fisheries Hasanuddin University.

Abstract:

Biography:

Abstract:

Operationalization of sustainable development would entail search for innovative options that cause minimal environmental media and resource degradation, while maximizing socio-economics benefits in terms of environmental planning, policies and system’s management. Computer simulation modeling is identified as a powerful tool for charting out better options for sustainable development. The paper aims at exploring the utility of qualitative/semi-quantitative simulation modeling methods in innovative-strategic planning, management and development. The specific methods for modeling of aquaponic/aquaculture dynamics are investigated as cross impact simulation and system dynamics. For the sake of illustration a simulation model has developed for cost benefit and economics of aquaponic/aquaculture system of tawa command area in India. The SD model is designed to develop and integrates the cause and effect relationships of the variables in pond dynamics, related issues to climate, farmer’s interest, peoples liking, demand, marketing and cost-effectiveness of aqua/aquaponic systems. The model has the potentiality to incorporate various policy options to improve aquaculture/aquaponic systems for livelihood generation and sustainable development of the region.

Biography:

Tianjiao Zhang has completed his PhD at the age of 27 years from China Agricultural University. She studied in Oklahoma State University as an exchange student from 2013 to 2015 and was involved in a NOAA project: “Biotic and abiotic factors related to persistence of a federally-threatened cyprinid”. She is now the senior lecturer of Shanghai Ocean University in Shanghai, China. She has published 14 papers in reputed journals.

Abstract:

There are many fishery resources with high economic and ecological values in the epipelagic and mesopelagic zone of the ocean. Researchers have paid much attention to the relationships between the spatial distribution of pelagic fishes and the marine environment, but few made comparisons among different fishes habitat in oceans all over the world. In this study, we chose 6 species of fishes: Clupea pallasii Valenciennes, Scomber japonicas, Thunnus obesus, Thunnus albacares, Isurus oxyrinchus, and Alopias vulpinus, which used to live in the epipelagic and mesopelagic zone of the ocean, to make comparative analysis on how marine environmental factors influence their spatial distributions. The marine environmental factors included: sea surface temperature (SST), photosynthetic radiation (PAR), chlorophyll-a concentration (Chl-a), sea surface salinity (SSS) and sea surface wind speed (MAG). We used the maximum entropy ecological niche model (MaxEnt) to predict the potential distribution of the 6 species of fishes combined with the environmental factors. The accuracy of the model was evaluated with the receiver operating characteristic (ROC) curve and the results showed that the AUC (area under the ROC curve) values of 6 MaxEnt models were all greater than 0.8, which indicated that the models had high precision. Based on the influence ranking of the marine environment factors, SST, PAR and Chl-a showed the most importance on the potential distribution of all the 6 species of fishes. However, there were large differences among the suitable range of each environmental factor for each fish. The results of this study could provide references for marine fishery.

Biography:

Maria Cardoso is a young doctor, completing her PhD in Ecology from Rio Grande do Norte Federal University, Brazil, with a PhD stage at University of Amsterdam, Netherlands. She has worked in the areas of lake restoration, exotic species and fishing management with the focus on the optimal use of natural resources. She is expertise in statistics and developing models for fish population dynamics in the tropics. 

Abstract:

Tilapias are one of the major groups of introduced species, representing an important food source and improving the local development. However, changes in the size-structure of tilapia (from dense populations with large adults to overpopulations of stunted individuals) have threatened not only fishing but also appear to be responsible for the negative impacts on native species. In this work, we carried out a review on the attributes of Oreochromis niloticus in tropical lakes and reservoirs, and we model the dynamics of individuals and populations. We found that the maximum size, fecundity and size-at-maturity are positively related to the lake area, however are probably a function of tilapia competition for food/space. The model indicated a low energy required for reproduction making tilapias only ceases reproducing under very unfavorable food conditions. Under low food availability, tilapias reproduce early, producing more eggs per gram of fish. Still, high algae biomass in lakes may induce the stunting of individuals as a consequence of high reproduction of adults tilapias. Such characteristics make tilapia successful in environments with harsh conditions, increasing their abundance and impacts on other species, as well as may not bring the desired economic benefits due to the stunting. The management of tilapia populations is recommended mainly in small and eutrophic lakes, to avoid competition for space and food that reduce tilapia growth rates without altering reproduction. We suggest harvesting on juveniles in parallel with fishing on adults when it is desired to break the stunting state and ensure the sustainability of fishing. 

Biography:

Gyorgy Bertalan Paczay has completed his Masters Degree on EU law and Politics from Nancy University and worked for more than 6 years in EU insitutions (Council of Ministers, European Parliament) in agricultural and fishery field. He is a Parliamentary Expert in the EP’s Agricultural and Fishery Committees. He has published more than 15 articles in Hungarian and English.

Abstract:

Hungary is a landlocked country with a long tradition of fish farming. Lake Balaton is the largest lake in central Europe, the two main waterways, the Danube and Tisza rivers, define the country’s geography. Fish are produced mainly in ponds but also in flowthrough systems and recirculation systems. Despite the relative small area of (freshwater) pond aquaculture- around 24.000 ha, this sector clearly shows Hungarian creativity and innovation. Our pond aquaculture is based on professional experience spanning centuries. The extensive fish production guarantees a high level of food safety to customers. The export of Hungarian aquaculture products has reached 27.5 million euros in 2016. The Hungarian fish pond aquaculture is the predominant production method, accounting for 83% of national fish production, both in volume and value. It also serves significant non-production functions such as water management, preservation of biodiversity, flood control, landscaping and recreational fishing. Due to its geothermal potential, Hungary can produce fish safely and cost-efficiently throughout the year. Furthermore, the aquaculture is an attractive field for micro, small and medium-sized enterprizes. Most of the fish farms have diversified their activities beyond aquaculture such as catering and tourism which is also an asset. As a member country of the European Union Hungary currently invests around 52 million euros (7 year programming) into its aquaculture co-financed by the EU to develop recirculation systems, to find and successfully use renewable energy (including geothermal energy), to provide ecosystem services and save biodiversity, to include new fish species to production or to develop and support fish processing.

Biography:

Alexander Rantetondok has completed his PhD at the age of 54 years from Hasanuddin University. He is a Professor in Fish Disease and Fish Immunology at Faculty of Marine Science and Fisheries, Hasanuddin University. He is the former Head of Fish Diseases and Parasites of Hasanuddin University and has been serving as an Editorial Board Member of various national and international Journals.

Abstract:

This study aims to analyze the performance of the Lactobacillus sp., in the digestive track of the white shrimp after being given various prebiotic in the feed. Test animals used in this study was white shrimp juvenile Litopenaeus vannamei, measured the weight of 1.84±0.23 g/individual with a stocking density of 10 shrimp/container, cultured for 30 days in a tank measuring 50x45x45 cm³ of 12 units, used the recirculation systems and filled 50 L seawater with salinity of 15 ppt. The treatments were four types of feed that is formulated with several of prebiotics i.e. A (without prebiotic), B (lotus seeds), C (sweet potatoes) and D (copra). In These four types of treatments has been added with Lactobacillus sp. with a population density of 1.5x10⁹ CFU/ml. The result showed that the effect of feeding with various prebiotic on the performance of Lactobacillus bacteria population (1.4x10⁴–1.2x10⁵ CFU/ml) were not significantly different, but it was significantly different to the enzyme α-amylase activity, (0.2558 IU/mL/minute), digestibility of carbohydrates (91.89%). The best resulted is feed added with prebiotic copra, while the fat digestibility (83.93%) that resulted in the feed without prebiotic showed the lowest result.

Biography:

Abstract:

There are many fishery resources with high economic and ecological values in the epipelagic and mesopelagic zone of the ocean. Researchers have paid much attention to the relationships between the spatial distribution of pelagic fishes and the marine environment, but few made comparisons among different fishes habitat in oceans all over the world. In this study, we chose 6 species of fishes: Clupea pallasii Valenciennes, Scomber japonicus, Thunnus obesus, Thunnus albacares, Isurus oxyrinchus and Alopias vulpinus, which used to live in the epipelagic and mesopelagic zone of the ocean, to make comparative analysis on how marine environmental factors influence their spatial distributions. The marine environmental factors included: sea surface temperature (SST), photosynthetic radiation (PAR), chlorophyll-a concentration (Chl-a), sea surface salinity (SSS) and sea surface wind speed (MAG). We used the maximum entropy ecological niche model (MaxEnt) to predict the potential distribution of the six species of fishes combined with the environmental factors. The accuracy of the model was evaluated with the receiver operating characteristic (ROC) curve and the results showed that the AUC (area under the ROC curve) values of six MaxEnt models were all greater than 0.8, which indicated that the models had high precision. Based on the influence ranking of the marine environment factors, SST, PAR and Chl-a showed the most importance on the potential distribution of all the six species of fishes. However, there were large differences among the suitable range of each environmental factor for each fish. The results of this study could provide references for marine fishery.

Biography:

Abstract:

Clownfish (Amphiprion percula), is a variety of marine ornamental fish. In rearing ornamental fish, water quality management is required to maintain the optimal condition of water quality. Filtration and recirculation are proven as preeminent ways to manage the optimal condition of water quality in aquarium as the vessel for rearing ornamental fish. Simple recirculation system double bottom filter was applied in this research with treatments of components modification of the system. The objective of the research were to identify the concentration of ammonia and survival rate in rearing media of clownfish (A. percula) using recirculation system double bottom filter with several modification components. The treatments are: 1) no recirculation/aeration only (treatment A), 2) system with components of gravel, activated carbon and Dacron (treatment B) and 3) sand, activated carbon and Dacron (treatment C). The result showed that the ammonia concentration in system A (control) was 8.323 mg/l, system B (gravel, activated carbon and Dacron) was 1.599 mg/l and system C (sand, activated carbon and Dacron) was 0.088 mg/l. The highest value of survival rate was in system C (sand, activated carbon and Dacron) which valued 90%. Water quality was monitored twice daily included water temperature (26.3–27.4 °C), pH (8.27-8.36), dissolved oxygen (4.95-5.30 mg/L) and water salinity (33.0-34.3 ppt). As the conclusion, component sand, activated carbon and Dacron in recirculation system double bottom filter provided better performance in reducing ammonia in rearing media of blue devil (A. percula) which also confirmed with the survival rate value.

Biography:

Abstract:

Ultra-structural changes in the oocytes and hepatocytes in the female Epinephelus diacanthus were studied with the progress of maturation. Transmission electron microscopic (TEM) observations revealed cytological changes associated with ovarian development. Nucleolus number increased in the peri nucleolus stage, which is an indirect indication of increase in protein synthesis with the onset of oogenesis. Zonation of yolk sphere and presence of microvilli in the Zona radiata were observed in mature oocytes. In comparison to the immature phase, mature/ripe stage hepatocytes showed greater development of both endoplasmic reticulum and increased density of mitochondria in the cytoplasm which is an evidence of progress in vitellogenin synthesis. Yolk protein vitellogenin was partially characterized employing polyacrylamide gel electrophoresis (PAGE). Vitellogenin level of expression was increased with the maturation of gonads.

Biography:

Abstract:

This study presents the results of the experiment having the aim to evaluate the attractivity of the different light color for the climbing perch (Anabas testudineus). Catches by traps equipped by lamps emitted six different light colors (red, green, yellow, blue, orange and white) were compared with catches of control traps without any lamps. Each light color was estimated in three illumination levels. The trials consisted of 140 trap hauls per lamp type with a submersion time of 10 h. Basically A. testudineus positively responded to all colors of the lamps tested. The light traps were considerably higher in the number of catch as compared to the control (P<0.05), except yellow and orange traps. A total of 608 individuals of A. Testudineus (7.523 g) consisted of 210 males (2.808 g) and 398 females (4.715 g) were investigated. The size of catch ranged of 60-170 mm total length (TL) and 4-84 g weight. The average CPUEs were ranged from 0.04 to 2.36 fish trap^-1 night^-1. While the average YPUEs were from 0.32 to 40.76 g trap^-1 night^-1. The mean condition factors of male and female were 1.41±0.18 and 1.52±0.25, respectively, indicating fish in good condition. The positive group responses of fish were more pronounced at the length sizes between 100 and 109 mm TL. Negative allometric growth pattern (b=2.7255-2.8247) was observed in A. testudineus, implies that culture strategy should be developed. In addition, efforts to collect them from the wild for breeding and commercial purposes may benefit from this research.

Biography:

The author obtained his bachelor’s degree with honours in Industrial Chemistry from the University of Putra Malaysia. He later received his Master of Science (Material Chemistry) and PhD at the same university. Currently, he is a Senior Manager at Republic Polytechnic, Singapore and is involved in development, formulation, and characterization of novel encapsulated artificial feeds for marine fish larvae, such as Asian seabass (Lates calcarifer), which is currently funded by the Ministry of Education Translational R&D and Innovation Fund (MOE-TIF).

Abstract:

Presently, Singapore is importing most of the food consumed in the country due to limited farming land and fishing grounds. With Singapore aiming to raise the proportion of locally produced fish from 8% to 15%, it is important to seek the most cost-effective feeds that are able to support good fish growth performance. This is because aquaculture feeds are contributing 50-70% of the total production cost of an aquaculture operation. This paper will discuss a study to use black soldier fly (BSF) larvae as a substitute for fish meal in fish diets, which is a partnership with a local fish farmer. The BSF larvae, which is of animal origin has been reported to show a great potential because it is containing high levels of protein and fats. In term of cost-effectiveness and availability, the BSF larvae grown at high densities on food waste seem to have a good potential for protein (~42%) and lipid (~35%) sources for aquaculture feeds. Through this project, we are using groupers as a model of study for developing BSF larvae as aquaculture feeds. We found that groupers were initially rejected the raw BSF larvae feeds even after multiple attempts of feeding. Thus, we were attempting to make 100% BSF larvae into pellet form using a suitable liquid binder. Finally, the groupers were starting to eat the BSF larvae feeds after processing the BSF larvae into pellets.

Biography:

A dynamic professional with over 34 years of rich indigenous experience in Teaching, Research, and Administration, Dr. Alka Parashar is a Ph.D. (Environmental Impact Assessment), M.Phil (Futurology) faculty of Engineering Science, D.A.V.V. Indore and M.Sc. Zoology (Fishes), Dr. H.S. Gour University Sagar, with expertise in the research fields of Simulation Modeling and Ecological Modeling for planning management and sustainable development, Modeling for environmental system’s assessment (Industrial and Mega-projects) environmental management (Aquatic resources and land use management), Biodiversity conservation, taxonomic identification and rehabilitation of Ichthyo fauna of reverine systems, fish genetic variability and commercialization of indigenous fish species with key focus on top line profitability & optimal utilization of resources in the education and research sectors.

Abstract:

Aquaculture is playing important role in the production of quality protein for mankind. Indian ornamental fishes on the other hand support major trade both in domestic and international market. Small indigenous species of fish play a vital role in providing nutrition to the rural poor livelihood and food security. Feed is influencing the growth, survival, pigmentation and maturation in fishes. In views of poverty allevation and employment generation as well as to explore the importance of indigenous fishes and for commercial purpose, an attempt has been made to develop formulated feed from cheap ,locally available carotenoid materials (Spirulina and Carrot) useful in formulating healthy feeds that can provide quick growth, maturation and coloration in fishes . Therefore the experiments are carried out with three replicates of the indigenous fish- Puntius sophore for the periods of four months. The standard culture method have been adopted and physico-chemical factors of water also have provided at optimal conditions, for each group. Experimental diets containing 4 %, 6%, 8% and 10% Spirulina and Carrot powder added diets along with a carotenoid free basic carp feed is utilized as a control diet. In all fish genera feeding with Spirulina showed a significant higher fecundity and growth as compared to control and carrot  diet (p<0.01).The mean GSI value in Male and Female were 1.02 % and 11.23 % recorded in the fishes fed on the control diet as compare to this feed 10 % Spirulina (SP) added feeds has recorded maximum Gonado Somatic Index (GSI) value 1.23 % and 12.52 % in Male and Female. By the estimation of fecundity the highest number of eggs (1401) has recorded in the fishes fed on the diet with 10 % SP diet ,while the lowest (989) has recorded in the fishes fed on the  control diet but 8 % carrot powder added diet shows  the highest total carotenoid contents 5.98 mg/kg  in male and 5.49mg/kg in female fishes. Thus results indicate  that carotenoid added formulated diets in fishes can provide desired pigmentation and growth performances and improve their potentials to put forward them as ornamentally sustainable value for commercial trade.

Biography:

Dr. Abdeen Mustafa Omer (BSc, MSc, PhD) is an Associate Researcher at Energy Research Institute (ERI). He obtained both his PhD degree in the Built Environment and Master of Philosophy degree in Renewable Energy Technologies from the University of Nottingham. He is qualified Mechanical Engineer with a proven track record within the water industry and renewable energy technologies. He has been graduated from University of El Menoufia, Egypt, BSc in Mechanical Engineering. His previous experience involved being a member of the research team at the National Council for Research/Energy Research Institute in Sudan and working director of research and development for National Water Equipment Manufacturing Co. Ltd., Sudan. He has been listed in the book WHO’S WHO in the World 2005, 2006, 2007 and 2010. He has published over 300 papers in peer-reviewed journals, 200 review articles, 7 books and 150 chapters in books.

Abstract:

A booming economy, high population, land-locked location, vast area, remote separated and poorly accessible rural areas, large reserves of oil, excellent sunshine, large mining sector and cattle farming on a large scale, are factors which are most influential to the total water scene in Sudan. It is expected that the pace of implementation of water infrastructure will increase and the quality of work will improve in addition to building the capacity of the private and district staff in contracting procedures. The financial accountability is also easier and more transparent. The communities should be fully utilised in any attempts to promote the local management of water supply and sanitation systems. There is little notion of ‘service, invoice and move on’. As a result, there are major problems looming with sustainability of completed projects. A charge in water and sanitation sector approaches from supply-driven approach to demand-responsive approach call for full community participation. The community should be defined in terms of their primary role as user/clients. Private-sector services are necessary because there are gaps, which exist as a result of the Government not being able to provide water services due to limited financial resources and increase in population. The factors affecting the eco-environmental changes are complex, interrelated, and interactive. The deterioration problems of water and sanitation have attracted some attention in recent years. There is an urgent need to study possible rehabilitation measures to ensure a sustainable and excellent water quality and improved sanitation.

Biography:

Dr Sevgi Savas has completed  PhD at the age of 30 years from Egean University. She is working as lecturer  at Süleyman Demirel University since 1994 . She is also dean Fisheries Faculty of SDU since 2015.

Abstract:

In this study, L-type marine rotifer Brachionus plicatilis were enriched with 10 levels (0, 0.001, 0.01, 0.1, 1, 10, 100, 500, 1000 and 1500 mg L-carnitine per l) of L-carnitine supplements dissolved in marine Chlorella spp. culture medium in  1 L mass culture trial for 7 days. The initial rotifer density was 100 ind ml-1 . The trials were conducted 1.5 x 106 cell ml-1 at food density, at 25±1ºC under an axenic condition in the laboratory. L-Carnitine enrichment has shown considerable influence on the population growth, reproduction and individual growth of rotifer Brachionus plicatilis The increase of population density was detected in 0.1-100 mg l-1 L-carnitine-treated rotifers but the highest population density (P<0.05) was detected 704,50±5,50 ind ml-1. L-carnitine significantly stimulated reproduction of enriched rotifers. The results suggest that L-carnitine could be a positive factor to enhance reproduction and population growth on enriched Brachionus plicatilis.

Biography:

Dr Ozaki has served as the Professor at Ehime University,Department of Chemical Industry and as the Visiting Professor at various reputed universities of the world including University of Konstanz, New York State University and Shangdong University. He had also been a Research Chemist at The Institute of Physical and Chemical Research, Tokyo, Japan. Currently he is the Professor Emeritus at the Ehime University, Japan. Dr Ozaki has been the recipient of Hatsumeishou (Invention Prize) for the invention of Carmofur (antitumor agent), Gakujutsusho (Academic Prize) from the Japan Chemical Society for the synthesis of biologically active compounds (Carmofur, IP3), Fulbright Award and the Alexander von Fumboldt Award.

Abstract:

Fossil fuel burn released 360 billion tones CO2 in 2016. Burning reaction is reverse reaction of CO2 assimilation. If we can compensate the generation of CO2 and heart of burning with the absorption of CO2 and heart by CO2 assimilation, global warming will be protected. But burning is predominant and 142 billion tone CO2 is increasing each year. To promote CO2 assimilation, supply of nutrient N and P is essential. 14.4 billion Tones NOx is produced when fossil fuel is burned. Many governments are eliminating NOx as pollution gas. Large amount of N and P in drainage is eliminated as pollution substance using much electricity. If we stop elimination of NOx and NP in drainage, 10 billion tone CO2 emission and 5 million tone fossil consumption will be saved and 142 billion tone CO2 can be fixed to protect global warming.  NOx in exhaust gas and N, P in drainage should be released as it is.  Promotion of plankton CO2 assimilation must be accomplished by increasing NP concentration of sea.  Elimination of law which forced to eliminate nutrient N, P and study on agitation of sea water are important subjects for the protection of global warming. Since industrial revolution, mankind is using large amount of fossil fuel. Remaining estimated amount of buried fossil fuel:  oil is 1730 billion tones, 42 years, natural gas is 2760 billion tones, 60 years, and coal is 9090 billion tones, 132 years. We should not waste precious fossil fuel for the elimination of NOx , NP. We should promote CO2 assimilation to make carbohydrate for food and for energy sources.

Biography:

Henry is 24 years of age from Zambia. He is a graduate of the Copperbelt University with a Bachelor of Science Degree in Fisheries and Aquaculture. He also has additional certificates in Business and Entrepreneurial Development from the University of South Africa-School of Business Leadership and Instructional Pedagogy from the University of Zambia-School of Education. He is currently working as a Lecturer and researcher at Zambia College of Agriculture (ZCA-Mpika). Henry is an ambitious young man whose inspiration is from the parents that taught him to face life with courage and always live up to his dreams. He is passionate about the youths and their welfare, I believe that, if every youth lived up to their dreams and become innovative and face life head on, the world would house a generation of great entrepreneurs and the issue of unemployment would be a thing of the past. His plan is to build a Farm Institute that will concentrate on research and equipping youths and women with aquaculture and agriculture skills.

Abstract:

A study on nutritional value and consumer acceptability of sundried, smoke dried and fresh tilapia species was undertaken in the Copperbelt Province of Zambia. The study involved undertaking a survey at three major markets, namely; Chisokone (in Kitwe), Roan (in Luanshya), and Main Masala (in Ndola) to ascertain; prevailing prices of fish, consumer preferences and acceptability. In addition, proximate chemical analysis was conducted on sundried, smoke dried and fresh tilapia species in the Environmental Engineering Laboratory of the Copperbelt University, in order to determine some nutrient composition. Results of the survey indicated that fresh fish was by far the cheapest (53%) and most preferable by consumers (68%) compared to sundried and smoke dried. At the same time, smoke dried fish was perceived to be the most expensive on the market. Similarly, proximate chemical analysis results indicated that smoke dried fish had the highest crude protein content (69.4%), while fresh fish had the least (57.4%) content. Meanwhile, fresh fish showed that it had the highest level of ash (17.6%), while sundried had the least (5.5%). However, ether extract was much higher in smoke dried fish (24.6%) compared with the other two types. The highest amount of moisture content was recorded in fresh fish (67.9%) and the least was recorded in smoke dried (7.37%) fish. Based on this study, it was established that there were several factors underlying the acceptance of sundried, smoke dried and fresh tilapia fish species on the market. Some of the factors included: health reasons, preference, taste, diversity of preparation methods and family satisfaction, quality of the fish being sold and place where trading was taking place. The consumers on the other hand based their acceptance to purchase the commodity on factors to do with their individual satisfaction of some of the aforementioned prevailing conditions. Nutritional value and consumer acceptance of tilapia species was largely dependent on processing method used, that were seen to affect both the nutrient composition as well as the consumer preference in buying the commodity. Furthermore, many consumers attributed their inability to purchase much more of sundried and smoke dried fish to higher prices being charged by traders.

Biography:

Charles Teta completed his PhD in Environnmental Toxicology and his BSc. (Hons) in Applied Biology and Biochemistry at National University of Science and Technology. Current, he is a Post Doctoral Research Fellow at Department of Ichthyology and Fisheries,  Rhodes University, South Africa. He has published 5 papers in reputed journals and hes is serving as a council member of Society of Environmental Toxicology and Chemistry (SETAC) Africa.

Abstract:

Fish have a neuroendocrine system that is highly sensitive to nociceptive stimuli and stressful conditions. As a result, ethical considerations necessitate the use of anaesthetic agents to ameliorate suffering. Menthol is well-known for its analgesic properties, but little information is available on its potential as an anaesthetic on fish. The purpose of this study was to assess anaesthetic effectiveness of menthol and its safety on rainbow trout (Oncorhynchus mykiss). Juvenile trout (180 g ± 28) were exposed to concentrations of 10–150 mg/l menthol in water and observed for physiological responses, induction time and recovery times. Menthol concentrations of 40-150 mg/l induced anaesthesia, albeit after varying exposure times. There was an exponential relationship (p<0.001) between induction time and menthol concentration. Menthol concentrations of 80–150 mg/l induced anaesthesia within 3 minutes of exposure and fish recovered within 5 minutes. Induction and recovery data showed that 80 mg/l was most suitable for anaesthesia. Concentrations of 10–20 mg/l had sedative effects. Menthol stock solutions prepared using ethanol and acetone and storage of stock solutions at room temperature up to 48 hrs had no significant differences in anaesthetic response. When exposure duration was kept constant at 3 mins, 22% of fish had temporary cessation of gill ventilation and such fish had longer recovery times. No observable health effects were noted within 72 hrs post-exposure. The results show that menthol is an effective anaesthetic for trout. However more studies on biochemical responses of exposed fish are recommended.

Biography:

Imani Kapinga is a 35 years old female (Mrs), a PhD student at Dar es salaam University, Tanzania. She is a research officer at Tanzania Fisheries Research Institute (TAFIRI). She has published one paper in an international journal and one submitted for peer review.

Abstract:

Farming of mixed sex of Nile tilapia, Oreochromis niloticus is challenged by prolific breeding which leads to slow growth due to competition for food, space and oxygen. Synthetic hormones have been used to produce all-males stock which are favored than females due to their ability to grow fast. However, hormones are expensive and inaccessible for most small scale farmers. Therefore, this study investigated two medicinal plants Aspilia mossambicensis and Azadirachta indica potential to control reproductive performance and sex ratio of O. niloticus. To assess reproductive performance, juveniles (41.5 ± 3.1g mean weight) were fed experimental diets contained 1.0, 2.0, 4.0 and 8.0 g of A. indica or A. mossambicensis leaf powder per kg of control diet (25% CP) at a ratio of 3% body weight for 90 days. For sex reversal experiment, two weeks old hatchlings were fed diets contained 40 grams of A. indica or A. mossambicensis powder per kg of control diet for 60 days and then followed by control feed for the remaining 90 days at 20% of their body weight. Feeding was done two times a day (10.00 and 17.00 hours). Results revealed that A. indica and A. mossambicensis significantly decreased reproductive performance of fish (p < 0.05). Accordingly, the two plants significantly altered sex ratio (SER) in favor of males (p < 0.05). These findings indicate that A. indica and A. mossambicensis can control prolific breeding as well as alter sex ratio of O. niloticus.

Biography:

Dr. Ogundiran, Mathew Akinloye has completed his PhD at the age of 40 years from Department of Pure and Applied Biology, Ladoke Akintola University of Technology, Ogbomoso, Nigeria. His area of specialization is Zoology and has a major in Fisheries and Hydrobiology. He has published more than 16 papers in reputed journals including omics journals and has been serving as an editorial board member of reputable Journals across the globe.

Abstract:

Despite the existence of environmental legislations in Nigeria, aquatic environment has remained the sewer for wastes not minding its implications on the resident resources. Heavy metals pollution has become a worldwide concern and this may be due to their ability to bioaccumulate in aquatic organisms which is a source of livelihood for human populations. Therefore, this work aimed at assessing heavy metal accumulation in Clarias buthupogon and Heterobranchus longifilis in Asa River, Nigeria. After reconnaissance survey, fish samples were collected using hooks, traps and cast nets of various sizes twice monthly between April, 2011 and March, 2013 and were identified immediately. The samples were processed and heavy metal concentrations were determined in the gill, liver and muscle using atomic absorption spectrophotometer. Different metals were analyzed in the gill, liver and muscle of the sampled fish species and the data obtained were subjected to statistical analysis using the T-test statistical package to determine the level of difference between means. The results in (mg kg-1, dry weight) showed different levels of the analyzed metals in the two fish species. The order of heavy metals accumulation in the two fish species are gills>liver>muscle and the levels of heavy metals bioaccumulation varied significantly (p<0.05) among season, sample locations, fish species and fish organs. All metals analyzed vary significantly in the two fish species examined, seasons and across sampling sites. The results suggest that Asa River has high pollution loads of these heavy metals in fishes due to an indiscriminate of discharge of effluents in the river and could pose a health hazards to man. Consequently, close monitoring of heavy metal loads in Asa River is recommended with a view of minimizing the risks to health of the population that depend on the river for their water and fish supply.

Biography:

Edward Akange is a Lecturer at the Department of Fisheries and Aquaculture, University Agriculture Makurdi, Nigeria. He holds a Master of Science Degree in Hydrobiology and Fisheries and is currently on his Doctoral Degree in Fisheries Management. He is a member of reputable professional organisation and has 10 scholarly publications to his credit.

Abstract:

The pollution status of Wurukum Abattoir was assessed using macroinvertebrates as bioindicators for a period of four months (November, 2015 - February, 2016). Abundance-Biomass comparison was used to evaluate the number (abundance) and weight (biomass) of macroinvetebrates so as to determine their tolerance or otherwise to the abattoir effluent. Four stations were selected along the River Benue with station B as the point of discharge. Water samples and bottom sediments were collected for the measurement of water physico-chemistry and macroinvertebrates. An assessment of the macroinvertebrates showed the percentage abundance of pollution-tolerant species such as Chiromonus larvae (3.4%) , Eristalis tennax (17.93), Tubifex tubifex(52.45%) and Macrobdella  decora (3.54%) in stations B was attributable to the effect of the abattoir waste discharged into River Benue. The ABC curve also indicated showed the abundance curve laying above the biomass curve at station B. The water quality parameters recorded higher concentrations at station B than other stations for EC (496.50±6.38 µs/cm); TDS (247.70±3.17 Mg/L); BOD (0.91±0.08 Mg/L) while DO (4.23±0.06 Mg/l) was lower at the point of discharge (station B). It was concluded from these results that the abattoir effluents had an impact on the water quality and macroinvertebrates composition, abundance and biomass at the assessed stations. The abattoir effluent could be effectively recycled into arable crop usage due to the high nutrient value.

Biography:

Zacharia Shitote is a lecturer of Project planning and Management in the School of Business and Management Sciences at University of Eldoret in Kenya. He holds a PhD in Disaster and Sustainable Development, and Certificate in Intensive Aquaculture Production from MATC Israel. He is the proprietor of AquaFarm International which besides Aquaculture consultancy services specializes in Tilapia and Catfish grow out production. He has published widely on Aquaculture in reputed international journals and speaker in several conferences.

Abstract:

Fisheries and aquaculture sector contributes to Kenya’s Gross National product (about 5%) through export earnings, employment, food security and livelihoods. The sector cannot be under-estimated in accelerating economic growth; poverty alleviation, employment generation and increased self-reliance. The paradox in fish farming is that there is no standard pricing for most fish products, as the case of beef and pork. Fish is sold in tins, pieces or in kilograms depending on the species. Cost of fingerlings varies from hatchery to hatchery, because there is no policy on fish pricing. These leads to economic and post-harvest losses as fish farmers struggle to sell their products. Poverty has been a persistent problem in fishing communities because there has been free and open access to inland water bodies and fishing is a last resort occupation for most youth and women. Excessive fishing and encroachment by water hyacinth especially on Lake Victoria has caused lower catches, affecting income of fishermen.These factors inhibit sustained development of artisanal fisheries and rural fish farmers.To mitigate these, the Government has been implementing since 2009 the Economic stimulus program, in adopting a more rational approach to management and development of fish farming. However, most of its gains have largely failed to affect the resource-poor small scale fishermen who represent the majority among the fishing community.Socioeconomic constraints arise from low education, economic status and low incomes from fish farming due to unpredictable prices.The socioeconomic factors affecting aquaculture development in Kenya are complex and exert increasing pressures on sustainable aquaculture development.

Biography:

The author obtained his Bachelor’s degree with honours in Industrial Chemistry from the University of Putra Malaysia. He later received his Master of Science (Material Chemistry) and Ph.D. at the same university. Currently, he is a Senior Manager at Republic Polytechnic, Singapore and is involved in development, formulation, and characterization of novel encapsulated artificial feeds for marine fish larvae, such as Asian seabass (Lates calcarifer), which is currently funded by the Ministry of Education Translational R&D and Innovation Fund (MOE-TIF).

Abstract:

In this paper, an attempt was made for encapsulation of chitosan loaded with egg yolks as protein source through layer-by-layer (LbL) assembly technique and followed by its in-vitro digestibility study, which is suitable for use in the early feeding of fish larvae. The chitosan-based microcapsules were designed to produce microcapsules with a suitable size-range for easy recognition and ingestion by marine fish larvae (50-100 μm), sufficient stability in terms of protein leakage and appropriate digestibility by the simulated-enzymes of marine fish larvae guts. Desired particle-size and stability against protein leakages over 8 hours were successfully achieved by optimizing the encapsulation process conditions. The digestibility trend of the chitosan microcapsules loaded with egg yolks was found similar to that measured for Artemia nauplii, which is commonly live feeds used for the feeding of fish larvae. Thus, the outcome of the in-vitro evaluation showed a promising characteristic as artificial larval feed with respect to entrap nutrients for further development to partially or fully replace live feeds in fish larval cultivation.

Biography:

Mr. Marx Perfecto Garcia is an Aquaculturist II, the Farm Manager of the three Technology Outreach Stations and the National Stock Assessment Program (NSAP) Project Leader at the Bureau of Fisheries and Aquatic Resources-Cordillera Administrative Region (BFAR-CAR). He obtained his B.Sc. in Fisheries degree and M.Sc. in Environmental Management at the Central Luzon State University. Mr. Garcia is a fishery research, extension and community development worker. He significantly works hands-on on research, extension as well as resource management. His skills and expertise include that in aquaculture and resource management.

Abstract:

The Amburayan River is one of the main river systems in the Cordillera Administrative Region (CAR) covering the provinces of Benguet, La Union and Ilocos Sur. Aside from being a tourism site, it is the primary water source for agricultural lands along the stretch of the river. It also serves as a fishing ground to the residents because of its potential as habitat to native, endemic, migratory and indigenous fish and other aquatic organisms. Being a pathway to native, endemic and migratory species in the region, protecting the Amburayan River ecosystem and conserving its ecological integrity enhances its productivity. The assessment of fishing gears and practices used including the fish species caught by these gears is important in the management of the resources. This study on fishing gears and practices was done in three municipalities in Benguet namely; Atok, Kapangan and Kibungan. Fishing gears and practices were determined through interview with the locals in focus group discussions and direct observation during fishing. This study revealed that there are different fishing gears and practices being employed along the Amburayan River. Most of which are traditional knowledge-based and used depending on the season and location of fishing area.  Fishermen create and modify their gears according to the river structure, time of the year and target species. There are ten fishing gears classified into falling gear (cast net or tabukol), lift net (balchew/sagada), hook and line (banniit), fish traps (apayaw/apajaw, bagekbek/gubo, bukatot and salliang), drive-in net (kalaskas) and miscellaneous gears (spear gun and asar). There are also five fishing practices and methods (sarep/salep, sawil, tarangutong/tunuton/punupon, sillag, lu-luy) observed and two gear accessories (alat and salgat) were recorded.  Conducting regular assessment of the gears and species of the Amburayan River would help in the formulation of policies for conserving the river ecosystem.

Biography:

Ms. Mary P. Tauli is an Aquaculturist I and the National Stock Assessment Program (NSAP) Assistant Project Leader at the Bureau of Fisheries and Aquatic Resources-Cordillera Administrative Region (BFAR-CAR). She obtained her B.Sc. in Fisheries degree at Central Luzon State University under the BFAR Fisheries Scholarship program. Upon completion of her degree, she proceeded to work as a research assistant at the Central Luzon State University- College of Fisheries. However, being an Igorot from the Cordilleras, her want to serve the people of her region led her to applying at the BFAR-CAR where she works up to now. 

Abstract:

The Cordillera Administrative Region (CAR), dubbed as the “Watershed Cradle of the North” caters to 13 major rivers, five of which are covered in the National Stock Assessment Program (NSAP) of the Bureau of Fisheries and Aquatic Resources (BFAR). In CAR, a native fishing gear known as asar, asal or kileb is being used by fisherfolk. It is a passive and size selective but not species-selective fishing gear. It takes advantage of the increased volume of fish trapped during the rainy season. Data on the history and origin of the asar were obtained through interviews with fisherfolk in Abra, Kalinga, Benguet, Apayao and Ilocos Sur. Data on fish composition and volume of catch were collected by NSAP-CAR in six landing centers along the rivers of Amburayan, Abra and Apayao-ABulug. In Abra, asar was constructed based on basbasan - a tool used to separate rice grains from its stalk. In Benguet, it was based on an old practice of filtering decaying materials in rice fields called asal. In Apayao, asar was introduced by Mr. Manuel Basilio, an Abrenian who migrated to Flora in 1964. NSAP data shows that 26 species of aquatic animals were caught by asar in the Cordillera Rivers in 2015. Asar as a gear contributed 5.5% of total inland capture fisheries in the Cordillera in 2015.

Biography:

Tae Seob Choi has completed his PhD from Chonnam National University in Gwangju, KOREA and postdoctoral studies from Department of Environmental Science, University of Technology, Sydney, Australia. He is the director of environmental business in NeoEnBiz Co. Ltd. He has published more than 20 papers in reputed journals and numerous presentations at relevant conferences. He has been also serving as a board member of  relevant National R&D Committee.

Abstract:

The effect of powder mixed feed adding marine microalga, Arthrospria platensis was conducted to investigate the survival, growth and physiological response of whiteleg shrimp, Litopenaeus vannamei. The purpose of this study is to develop a natural source of food replacing antibiotics in feed. The addition amount of spirulina was set at treatment groups (low ; 0.1%, high ; 1.0%) and control (0.0%) in this experiment. After feeding during six weeks, the effect of spirulina as a feed additives was analyzed as growth, survival, feed efficiency, nonspecific immunity and resistant disease on whiteleg shrimp. There were significantly showed the difference between treatment groups (low and high) and control on growth, survival and feed efficiency. The results of blood analysis indicated the glucose contents higher in low treatment (0.1 %) than in other groups. In addition, the content of triglyceride was showed more in treatment groups (low and high) than in control group. As a result of nonspecific immunological index analysis, antiprotease inhibition was also significantly higher in the spirulina supplemented groups than in the control group. However, the results on lysozyme, PO, SOD, and resistant disease did not reveal a trend or significant difference between all treatment and control groups. The results of this study suggest that spirulina as a feed additives may increase the growth, feed efficiency and the nonspecific immunity when added to the whiteleg L. vannamei mixed diet. And the optimal amount of spirulina was estimated to be around 0.1 %.

Biography:

Dr Nyan Taw received his Ph.D. from the University of Tasmania, Australia. He served as short term consultant for FAO and World Bank funded projects in Saudi Arabia and Vietnam. He was a technical counter-part for ADB and JICA projects to develop the fisheries sector in Myanmar from 1976 to 1987. In 1988, he joined the FAO of the UN and served in aquaculture projects in Indonesia, Vietnam and the Philippines culminating the position of CTA. From 1995, Dr Nyan served as Production Director at a number of locations in Indonesia. In 2002, he joined CP Indonesia, as VP where he initiated biofloc technology. Later he served as SVP for Dipasena Group, Indonesia.

Abstract:

Biofloc technology applied in shrimp farming is in fact adapted from the basic minimum water exchange shrimp intensive culture system used in Indonesia since early late 1990s. The system then was to position aerators within culture ponds to concentrate waste (sludge) into centre of ponds which were then siphon out physically or through central drain system. The aerators were operated almost 24 hours to have optimum culture pond environmental condition. The system creates clean water column and bottom feeding area and separated the sludge area (Taw 2015). The system had been applied in Indonesia in Lampung (Taw, 2005; Taw, et al 2007).

Shrimp biofloc system is somewhat an upgraded system by introducing carbon such as molasses and wheat flour to develop a heterotrophic environment and suspend biofloc colony within pond water column. The biofloc system develop base on what shrimp farmers are used to by developing algae first and later cross over to biofloc to have self-nutrification process sets in  (Taw 2014). Main economic benefits of shrimp biofloc system are – better biosecurity, low FCR, higher production, higher energy efficiency and sustainable production.

The biofloc technology was used in Indonesia without incidents of WSSV where it was a threat to shrimp farmers (Taw, 2005; Taw et al 2008). During late 2000s the IMNV outbreaks in Indonesia caused a huge lost to Indonesian shrimp farmers. During the period a small shrimp farm in Northern Bali using biofloc technology survived by using biofloc technology (Taw & Setio, 2014). In Malaysia biofloc technology has been applied at Blue Archipelago shrimp farm since October 2011 and has been operating successfully without any incident of EMS/AHPND (Taw, et al. 2013 & 2014).

According to In-Kwon (2012 &2014) there were more than 2,000 bacterial species in well-developed biofloc water. A study at Bogor University, Indonesia and Ghent University, Belgium revealed that biofloc system contributes to the enhancement of immune response and survival after IMNV challenge regardless the carbon source. The application of BFT brings about beneficial effect in disease control and management in shrimp culture (Ekasari, et al., 2014). 

Biography:

Amal Biswas is an Associate Professor at the Aquaculture Research Institute of Kindai University, Japan. He has got his B Sc in Fisheries and Marine Resource Technology, and awarded Japanese Monbusho Scholarship to pursue Master and PhD study in the field of Aquatic Biosciences at the Graduate School of Fisheries Science, Tokyo University of Marine Science and Technology, Japan. After successfully finishing the postgraduate studies, Biswas was awarded Post-doctoral fellowship from CoE (Center of Excellence) program of Kindai University, Japan. He has published more than 150 papers in journals, books and conference proceedings, including about 50 papers in International Journals. He has also published several chapters in books including each in both Nova Science Publishers Inc. and Wiley Blackwell Science, and articles in newspaper and magazines. He is a member of different academic committee of Kindai University as well as different professional international society. He is a potential reviewer of several national and international journals. Biswas has been interviewed by live TV program and international radio program. He has received couple of awards for oral and poster presentation. Recently Biswas received the Japanese Award of Young Scientist. His research activities cover diverse fields including fish nutrition and aquaculture, fish physiology and reproductive biology.

Abstract:

Although the full-cycle culture system of Pacific bluefin tuna (PBT), Thunnus orientalis was established in 2002, a lot of areas yet to be clarified to establish an efficient culture system. PBT have high nutrient and energy demands due to their extremely fast growth and high metabolic rate compared to other marine species. Therefore, it has possibility that the energy partitioning for maintenance, losses and growth of PBT is different compared with that of other fish species. To establish an efficient culture technology for this species, it is important to understand the entire picture of how and where the energy from a given diet has been used in a fish. Each 30 PBT juveniles (mean weight 1.1 g) were stocked into three 2500 L tanks. Fish in one tank was fed with formulated feed for 10 days for feces collection and growth performance. Another tank was used to measure the metabolic rate by measuring oxygen consumption (ḾO2) after fasting the fish for 12 h  and sealed the tank with a transparent plastic cover to block the air penetration. As the PBT juveniles are very weak in handling, fish from the remaining tank were measured to consider as the mean initial body weight. The final mean body weight (6.4 g) reached six times larger than initial body weight in 10 days, which indicates a fast growth of PBT juveniles. The digestibility of protein, lipid and energy was 93.7, 83.0 and 82.8%, respectively, slightly lower compared with other marine species. The gross energy (GE) of PBT juveniles was ca. 3629.5 kJ / kg BW / day. The loss through fecal (FE), urinary and branchial (UE + ZE), standard metabolism (SME) and heat increment and voluntary (HiE + HjE) was 17.2, 6.3, 42.1 and 13.7%, respectively. Due to high energy dissipation for SME, the retained energy (RE) was only 20.7%, which is lower than other marine species investigated till now. The results resembled that PBT juveniles have high GE requirement and showed different energy partitioning compared to other species.