Day 1 :
Keynote Forum
Shoichiro Ozaki
Professor Emeritus, Ehime University
Keynote: Promotion of CO2 assimilation by effective use of NOx and NP is best method to produce much fish and protect global warming
Time : 09:00 am to 09:40 am
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:
The earth is warmed up by the burning of 1.4 billion tone fossil releasing 360 billion tones CO2 in 2016. If we can compensate the generation of CO2 by CO2 assimilation, global warming can is protected. To promote CO2 assimilation, supply of nutrient N and P is essential. About 14.4 billion tone NOx is produced when fossil is burned .Some country hate NOx as pollution gas and do NOx elimination. Some country does not do NOx elimination and use NOx as fertilizer. NP in drainage is also hated as pollution substance at some country and eliminated. Use of NOx and NP as fertilizer or eliminate these give great influence on growth of plant, CO2 assimilation, production of grain, fish, electricity price,GDP. When we look at fish industry of many country, the country which use NOx and N,P in drainage are producing much fish and fixing much C02. China,Indonesia,India, Vietnam do not eliminate NOx and do not do drainage treatment . NOx is a promotor of plant growth and CO2 assimilation. Therefore NOx elimination gives great damage on growth of plant and plankton, production of fish, grain. To eliminate NOx, ammonia is used. By this reaction, precious fertilizer is destroyed by other fertilizer. This is tremendous loss. The country who do this reaction like USA, Japan,Germany ,Italy are consuming much fossil generating much CO2 for elimination of NOx. Therefore electricity price is higher than no NOx elimination country. The country whose electricity price is low can produce well with low price. Then producing industry progress and GDP growth rate become higher.Therefore NOx elimination and drainage NP elimination should be stopped to produce much fish and protect global warming.
Keynote Forum
Shoichiro Ozaki
Professor Emeritus, Ehime University, Japan
Keynote: Promotion of CO2 assimilation by effective use of NOx and NP is best method to produce much fish and protect global warming
Time : 09:00 am to 09:40 am
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:
The earth is warmed up by the burning of 1.4 billion tone fossil releasing 360 billion tones CO2 in 2016. If we can compensate the generation of CO2 by CO2 assimilation, global warming can is protected. To promote CO2 assimilation, supply of nutrient N and P is essential. About 14.4 billion tone NOx is produced when fossil is burned .Some country hate NOx as pollution gas and do NOx elimination. Some country does not do NOx elimination and use NOx as fertilizer. NP in drainage is also hated as pollution substance at some country and eliminated. Use of NOx and NP as fertilizer or eliminate these give great influence on growth of plant, CO2 assimilation, production of grain, fish, electricity price,GDP. When we look at fish industry of many country, the country which use NOx and N,P in drainage are producing much fish and fixing much C02. China,Indonesia,India, Vietnam do not eliminate NOx and do not do drainage treatment . NOx is a promotor of plant growth and CO2 assimilation. Therefore NOx elimination gives great damage on growth of plant and plankton, production of fish, grain. To eliminate NOx, ammonia is used. By this reaction, precious fertilizer is destroyed by other fertilizer. This is tremendous loss. The country who do this reaction like USA, Japan,Germany ,Italy are consuming much fossil generating much CO2 for elimination of NOx. Therefore electricity price is higher than no NOx elimination country. The country whose electricity price is low can produce well with low price. Then producing industry progress and GDP growth rate become higher.Therefore NOx elimination and drainage NP elimination should be stopped to produce much fish and protect global warming.
Keynote Forum
Anilkumar Gopinathan
Senior Professor, Vellore Institute of Technology, India
Keynote: Importance of Molecular Endocrinological studies in optimization of Aquaculture: An overview with finfish and shellfish models
Time : 10:10-10:50
Biography:
Anilkumar Gopinathan, Senior Professor at the Vellore Institute of Technology, India, had his postdoctoral training (hormone receptor genes) from the University of Oklahoma, USA. Two-time Grantee of the International Foundation for Science (IFS, Sweden), Anilkumar is also the Scientific Advisor to IFS, and contributed significantly to the field of crustacean molecular endocrinology. He had been Visiting Scientist to University of Gdansk (Poland), Belarus State University and University of Oklahoma (DST-NSF). Recipient of St. Berchman’s Best Teacher award, Anilkumar has also chaired scientific sessions in several international conferences and delivered plenary lectures on topics with a bias to aquaculture.
Abstract:
Optimization of aquaculture would require in-depth understanding of metabolism of the candidate species, especially with respect to that of growth and reproduction, the two major high energy – demanding processes. In fishes, growth hormone and insulin-like growth factors are known to play major role in development and metabolism; studies have allowed discernment of a complex, tissue-specific collection of IGF-I transcripts, through alternative splicing. Recent studies have enabled us to formulate synthetic hormones that could shorten the growth time needed for farm-raised fish to reach market size. Interestingly in crustaceans (crabs, shrimps etc.), regulatory mechanisms rely on the intricate balancing between stimulatory and inhibitory principles. Here, the ecdysteroids, secreted by the Y - organ, and the terpenoid methyl farnesoate, secreted by the mandibular organ act as stimulatory hormones for growth and reproduction respectively. Further, the neurosecretory cells from the decapod eyestalks are known to produce molecules that could inhibit growth and/or reproduction. Information gathered on the inhibitory hormones from the eyestalk has paved the way for using deeyestalking as a potential tool for induced breeding in female shrimps and lobsters. However, recent observations reveal that in spite of its efficacy in artificially induced egg maturation in female crabs and shrimps for one cycle, deeyestalking is no more considered as a technique of consistency for induced breeding. Results of recent investigations on hormone receptors provide us with valuable clues on viable possibilities for inducing growth and reproduction, and optimization of aquaculture, to be discussed during the proposed talk.
Keynote Forum
Nyan Taw
Shrimp Aquaculture Consultant (Former; Chief Technical Advisor & Consultant for FAO projects of the UN and WB)
Keynote: Various intensive shrimp farming systems in Asia: Commercial implementation of biofloc and RAS production systems help control shrimp farming diseases
Time : 11:10 am to 11:50 am
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:
Before the mid-1990s, the major diseases affecting the farmed shrimp industry were of bacterial origin. But in Asia and from late 1994, the appearance of various, major viral diseases – like White Spot Syndrome Virus (WSSV), Yellow Head Virus (YHV), Infectious Myonecrosis Virus (IMNV) and others – led to changes in the design and operation of some shrimp farms to help prevent outbreaks and dissemination of viral diseases. More recently, WSSV outbreaks in Saudi Arabia in farming operations for Indian white shrimp (Penaeus indicus) provided more evidence that additional biosecurity was needed. And since 2009, outbreaks of a new bacterial disease, Acute Hepatopancreatic Necrosis Syndrome (AHPNS) – which started in China and spread to Asia and later Central America in 2015 – has caused losses of billions of dollars. In Australia WSSV outbreak in early 2017 at black tiger shrimp (Penaeus monodon) farms provide additional evidence for the need to change shrimp production systems.
Because of old and newly emerging viral and bacterial diseases affecting their farmed shrimp industry, some years ago various Asian countries started developing and using biofloc and recirculation aquaculture system (RAS) production technologies and/or treating incoming water for culture operations and wastewater treatment as biosecurity measures for disease prevention and control. Many production systems are used by Asian shrimp growers – from single-pond base management to larger RAS systems – but many have yet to reduce their environmental impact due to their wastewater discharges.
Examples of different biofloc and recirculation aquaculture (RAS) shrimp farming systems used in Asia in the last two decades, including some of the projects I have personally been involved with and provided technical expertise, as well as some perspectives on these technologies are provided. Large integrated shrimp farms in Indonesia: Dipasena group in Lampung, PT CPB in Lampung and PT SAJ in Sumbawa and Blue Archipelago Bhd projects in Kedah and Terengganu in Malaysia.
In any aquaculture business, sustainability of a system can improve profits. With emerging disease problems, treating wastewater discharged from farming facility or RAS is of utmost important. What investors, shrimp farmers and technicians need to be aware of is that, whatever waste is discharged into the environment, it will likely com/e back to you in the form of disease sooner or later.
- Biotechnology and Genetics in Aquaculture and Fisheries | Aquaponics | Fishing Technology | Fisheries Ecology and Management | Recirculating Aquaculture Systems
Session Introduction
Jacqueline M F Sahetapy
Lecturer, Aquaculture Study Program, Fisheries and Marine Science Faculty, Pattimura University
Title: The Effect Of Component Modification Of “Double Bottom Filter†Recirculation System To Ammonia Content And Survival Rate At Rearing Media Of Clownfish (Amphiprion percula)
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:
Rahim Peyghan
Professor, Shahid Chamran University, Iran
Title: Cloning, expression and immunogenicity analysis of protective effect of recombinant protein (OmpTS) of Aeromanas hydrophila in Common carp, Cyprinus carpio.
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).
M. Nazrul Islam
Professor, Department of Zoology, University of Rajshahi, Bangladesh
Title: Economic Returns of Existing Various Shrimp Farming Practice in Southwest Region of Bangladesh
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.
Nishita Lal
PhD Student, Vellore Insititute of Technology, India
Title: Studies on the Moulting and Developmental Stages of the Brine Shrimp (Artemia)
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.
Ritu Prem
PhD Student, Indian Insititute of Technology, Kharagpur, India
Title: Design and development of a novel fish feeding system for small and marginal farmers
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.
Rani Palaniswamy
Principal Scientist, Central Inland Fisheries Research Institute, ICAR, India
Title: Culture based reservoirs fishery management in tropical regions, India - A case study
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.
Abstract:
A. Shyla Suganthi
Assistant Professor, Holy Cross College (Autonomous), India
Title: Accessory glands of male brachyuran crabs could assist safe sperm transport
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.
A Chandrasekhara Rao
Asst.Professor, Sri Venkateswara Veterinary University, India
Title: Ultrastructural changes in the otocytes, hepatocytes and variations in the expression of yolk protein vitellogenin with the maturation of gonads in the Epinephelus diacanthus ( Valenciennes)
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.
Alka Parashar
Professor & Head of the Department Zoology and Administrant Officer, Sarojini Naidu P.G. (Autonomous) College, India
Title: Application of Simulation Modeling in Planning and Cost–Benefit Assessment of Traditional Fishery and Aquaponics Technology for Livelihood Generation and Sustainable Development. A case of Tawa Command Area, India
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.
Ahmadi Ahmadi
Lecturer, Faculty of Marine and Fisheries, Lambung Mangkurat University
Title: Trapping Survey for the Red Frog Crabs (Ranina Ranina) Using the Baited Tangle Nets and Pots in Offshore Tanegashima, Japan
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.
Alexander Rantetondok
Professor in Fish Disease and Fish Immunology, Faculty of Marine Science and Fisheries, Hasanuddin University
Title: The Effect of the Different Prebiotic Level Added to the Feed on the Performance of Lactobacillus sp Bacteria (enzyme α amilase activity, and digestibility of carbohydrates) in the Digestive Track of White Shrimp, Litopenaeus vannamei
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:
Alka Parashar
Sarojini Naidu Govt. Girls PG Autonomous College, India
Title: Application of simulation modeling in planning and cost–benefit assessment of traditional fishery and aquaponics technology for livelihood generation and sustainable development: A case of Tawa command area, India
Time : 11:50-12:20
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.
Tianjiao Zhang
Senior Lecturer, Shanghai Ocean University
Title: Modeling distributions of pelagic fishes based on MaxEnt
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.
Maria Marcolina Lima Cardoso
PhD Student, Rio Grande do Norte Federal University
Title: Life-history of Nile Tilapia in Tropical Lakes and Reservoirs
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.
György Bertalan Páczay
European Parliament, Belgium
Title: A Hungarian proof on innovative freshwater aquaculture
Time : 16:30-17:00
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.
Alexander Rantetondok
Hasanuddin University, Indonesia
Title: The effect of the different prebiotic level added to the feed on the performance of Lactobacillus sp bacteria (enzyme α-amilase activity, and digestibility of carbohydrates) in the digestive track of white shrimp (Litopenaeus vannamei)
Time : 16:00-16:30
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.
Tianjiao Zhang
Shanghai Ocean University, China
Title: Modeling distributions of pelagic fishes based on MaxEnt
Time : 15:10-15:40
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.
Jacqueline M F Sahetapy
Pattimura University, Indonesia
Title: The effect of component modification of “double bottom filter†recirculation system to ammonia content and survival rate at rearing media of clownfish (Amphiprion percula)
Time : 14:40-15:10
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.
A. Chandrasekhara Rao
Sri Venkateswara Veterinary University, India
Title: Ultra-structural changes in the otocysts, hepatocytes and variations in the expression of yolk protein vitellogenin with the maturation of gonads in the Epinephelus diacanthus (Valenciennes)
Time : 14:10-14:40
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.
Ahmadi Ahmadi
Lambung Mangkurat University, Indonesia
Title: The attractivity of the different light color and morphometric characteristic of climbing perch (Anabas testudineus)
Time : 13:40-14:10
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.
Goh Chee Keong
Senior Manager, Republic Polytechnic, Singapore
Title: Development of Cost-Effective Feeds for Marine Fish Feeding and Growth
Time : 12:20-12:50
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.