• August 13-14, 2018 Amsterdam, Netherlands

Keynote Talks

Abstract

Scarcity of fresh water, overfishing and decline of biodiversity in the oceans, marine eutrophication by anthropogenic activities and the increasing demand for sea food, have all reached the point of requiring attention in a more comprehensive, global perspective. Moving from conventional aquaculture toward an ecological approach to the development and management of a sustainable aquaculture that cares for environmental and sociological aspects can bring relief to at least some of these problematic issues. Nutrient assimilation in aquaculture using Integrated Multi-Trophic Systems (IMTA) is a promising ecological approach for a sustainable aquaculture. The rationale behind the IMTA systems is to convert the excretions of the organism cultured upstream into valuable food for the organism cultured downstream. Marine algae and halophyte plants have a high capacity for nutrient uptake per unit of culture area, and can be an important additional valuable products. IMTA systems in both offshore cages and land based facilities will increase profit for the farmer, improve food conversion rate (FCR), diversify the mariculture products, often create additional jobs, and, most importantly, reduce environmental pollution.

Biography

Prof. Muki Shpigel is leading Senior Scientist on Mariculture. He is a professor of Aquaculture and Marine biology in Oceanographic & Limnological Research, Israel. In 1985 Dr. Muki Shpigel graduated from Tel Aviv University with his PhD in Marine Biology. His research interest includes six major topics:1) Sustainable aquaculture.2) Research and development of Integrated Multi-Trophic Aquaculture (IMTA) systems.3) Mariculture (R&D) of fish, bivalves, sea urchins, abalone and seaweed. 4) Physiology of bivalves (oysters, clams), abalone and sea urchins.5)Use of bivalves, Artemia, seaweed and constructed wetland with halophytes as biofilters of mariculture effluents.6) Using seaweeds and halophyte plants as feed. From 1985 to 2017 he is a Senior Research Scientist at the Israel Oceanographic and Limnological Research, National Center for Mariculture. From 1989 to 1990 he did his Postdoctoral position at the Virginia Institute of Marine Science (VIMS) in Prof. Roger Mann's department. Research with a subject: bivalve bio-energetics. From 1998 to 1999 he worked as a Sabbatical leaves, at N.O.A.A, Milford Laboratory, Milford, CT, USA. Prof. Muki Shpigel was Adjunct Professor at Ben Gurion University of the Negev in 2010. He is a Principal Research Associate in Morris Kahn Marine Research Station, The Leon H. Charney School of Marine Sciences and University of Haifa. Dr. Muki Shpigel has 131 publications in peer reviewed journals, book chapters and proceedings.

Speaker
Muki Shpigel / The Interuniversity Institute for Marine Sciences (IUI),Eilat.

Abstract

The National Oceanic and Atmospheric Administrations National Marine Fisheries Service (NOAA Fisheries) utilizes observers to collect information on catch, bycatch, fishing effort, biological characteristics, interactions with protected species, and socioeconomic information from U.S. commercial fishing and processing vessels. Observer data helps to support NOAA Fisheries conservation and management goals, strengthen and improve fishery management decision-making. NOAA Fisheries regional observer programs have reported that current recruitment techniques generate an adequate number of applicants for current observer needs. However, this circumstance could change. The authors have noted high turnover rates for observers in most regions, which potentially could result in a lack of observers and low-quality data collection. To help improving the retention of qualified and experienced observers, which may help to reduce training efforts and costs, and at the same time improve data quality, NOAA Fisheries National Observer Program conducted U.S. Fishery Observer Survey. The survey was designed to have a better understanding of observers working condition and needs, thus provide information that will help managers understand incentives and disincentives for current and former observers to retain their jobs. The increasing participation of former observers will help NOAA Fisheries to better evaluate the program over time. The survey result shows the relationship between satisfaction rate and gender, age, fishery program, administration among other factors. Certain recommendations have been made to improve the working environment for fishery observers.

Biography

Dr.Yuntao Wang is an Associate Professor in Second Institute of Oceanography, China.Dr. Yuntao Wang graduated from University of Georgia with his PhD in marine science.His research includes three major topics: 1) variability of SST frontal probability in Eastern Boundary Current Systems, which discusses the spatial and temporal variability of SST front and corresponding mechanisms in upwelling system, 2) mesoscale air-sea interaction in global coastal oceans, which quantifies the coupling coefficients between SST gradient and wind stress and corresponding spatial and temporal variability, and 3) coastal hydrodynamic modelling in Georgia, U.S.A., which describe the variability of residence time, salinity and other factors over the estuaries.After pursuing his PhD, Dr. Wang worked at NOAA Fishery Office of Science and Technology as John Knauss Sea Grant Fellow in Silver Spring, Maryland, U.S.A. His duty included management of fishery observer.Dr. Wang starts working as an associate research fellow at State Key Laboratory of Satellite Ocean Environment Dynamics at Second Institute of Oceanography in Hangzhou ,China.

Speaker
Yuntao Wang / Second Institute of Oceanography china

Abstract

Professor Tiantian Zhang is a leading figure internationally in research on cryopreservation of gametes and embryos of fish species and her research interests have been in the areas of cryopreservation of reproductive cells and the effect of cryopreservation on genome integrity and cellular metabolism.

Biography

Dr. Tiantian Zhang is Deputy Dean of Research and Professional Practice at Faculty of Science and Technology, Bournemouth University, England. She is a leading internationally in research on cryopreservation of gametes and embryos of fish species and her research interests have been in the areas of cryopreservation of reproductive cells and the effect of cryopreservation on genome integrity and cellular metabolism.

Speaker
Tiantian Zhang / Bournemouth University England

Abstract

With the population forecast to reach 8.3 million people by 2030, we will need 50% more energy, 40% more water and 35% more food. Aquaculture is expected to supply this food necessity. For the decade 2012-2022, fish farming is forecasted to grow 29% and 50%. Fish feed industry must growth at same level. The global aquafeed & aquaculture additives market is expected to reach approximately USD 179.81 billion by 2022, while registering itself at a compound annual growth rate (CAGR) of 11.02%. On the other hand, efforts to intensify aquaculture lead to an increased stress, limited productivity and poor welfare of culture fish. Traditionally, use of antibiotics in aquaculture has been a strategy for mitigating stressful conditions, diseases or to improve productivity. However, prophylactic used of antibiotics has been criticized and even ban in many countries. In a global effort to significantly decrease the use of antibiotics, European Union started a prohibition of them in January 2006 (European Parliament and Council Regulation -EC- No. 1831 ̸ 2003). Functional additives (non-nutrient ingredients supplemented in diets), have emerged as an alternative to antibiotics. Previous studies have demonstrated that functional additives influence physical and chemical properties of diets. Present review, is based in current development of avant-garde research and applied science on functional additives used in aquaculture industry. This report, analyzes the actual status (from economical, scientific and technical-industrial point of view) of functional additives (probiotics, prebiotics, immunostimulants, nucleotides, medicinal herbs, organic acids and acidifiers) supplemented in fish diets (of marine, fresh, cold and warm water species) and their effects as immune enhancers (phagocytic activity, respiratory burst activity, lysozyme, peroxidase activity, complement activity and cytokines) and growth promoters (protein, lipid and carbohydrates digestibility, microflora and intestinal morphology). This review, put an emphasis in the cornerstone of functional additives, quality and reliability of resulted products and feed cost efficiency of aquafeeds.

Biography

Rodriguez-Estrada Uriel is an aquaculture nutritionist with wide experience in feed additives research. He is a PhD holder, graduated from the Tokyo University of Marine Science and Technology. He has also been trained in Chinese fish farming. Since then, he has occupied postdoctoral positions (Catholic University of Temuco in Chile and Sao Paulo University & Fisheries Institute, in Brazil) where has authored several peer review publications. Rodriguez-Estrada being part of academy, has a wide experience as a part of R&D investigations of different companies. He also has experience working with Solid State Fermentation and development of environmentally friendly feeds for marine fish. His research has used warm water fish and cold water species. Additionally, he has tailored his experience as external advisor for industry and more recently, as scientific consultant for fish farming in rural development programs in Mexico.

Speaker
Uriel Rodriguez-Estrada / Instituto de Pesca, Brazil

Sessions:

Abstract

Scarcity of fresh water, overfishing and decline of biodiversity in the oceans, marine eutrophication by anthropogenic activities and the increasing demand for sea food, have all reached the point of requiring attention in a more comprehensive, global perspective. Moving from conventional aquaculture toward an ecological approach to the development and management of a sustainable aquaculture that cares for environmental and sociological aspects can bring relief to at least some of these problematic issues. Nutrient assimilation in aquaculture using Integrated Multi-Trophic Systems (IMTA) is a promising ecological approach for a sustainable aquaculture. The rationale behind the IMTA systems is to convert the excretions of the organism cultured upstream into valuable food for the organism cultured downstream. Marine algae and halophyte plants have a high capacity for nutrient uptake per unit of culture area, and can be an important additional valuable products. IMTA systems in both offshore cages and land based facilities will increase profit for the farmer, improve food conversion rate (FCR), diversify the mariculture products, often create additional jobs, and, most importantly, reduce environmental pollution.

Biography

Prof. Muki Shpigel is leading Senior Scientist on Mariculture. He is a professor of Aquaculture and Marine biology in Oceanographic & Limnological Research, Israel. In 1985 Dr. Muki Shpigel graduated from Tel Aviv University with his PhD in Marine Biology. His research interest includes six major topics:1) Sustainable aquaculture.2) Research and development of Integrated Multi-Trophic Aquaculture (IMTA) systems.3) Mariculture (R&D) of fish, bivalves, sea urchins, abalone and seaweed. 4) Physiology of bivalves (oysters, clams), abalone and sea urchins.5)Use of bivalves, Artemia, seaweed and constructed wetland with halophytes as biofilters of mariculture effluents.6) Using seaweeds and halophyte plants as feed. From 1985 to 2017 he is a Senior Research Scientist at the Israel Oceanographic and Limnological Research, National Center for Mariculture. From 1989 to 1990 he did his Postdoctoral position at the Virginia Institute of Marine Science (VIMS) in Prof. Roger Mann's department. Research with a subject: bivalve bio-energetics. From 1998 to 1999 he worked as a Sabbatical leaves, at N.O.A.A, Milford Laboratory, Milford, CT, USA. Prof. Muki Shpigel was Adjunct Professor at Ben Gurion University of the Negev in 2010. He is a Principal Research Associate in Morris Kahn Marine Research Station, The Leon H. Charney School of Marine Sciences and University of Haifa. Dr. Muki Shpigel has 131 publications in peer reviewed journals, book chapters and proceedings.

Speaker
Muki Shpigel / The Interuniversity Institute for Marine Sciences (IUI),Eilat. Morris Kahn Marine Research Station, Department of Marine Biology, Leon H. Charney School of Marine Sciences, University of Haifa.

Abstract

Lobster has reared common in the south central provinces of Vietnam, especially in Phu Yen, Khanh Hoa, Ninh Thuan and Binh Dinh provinces. 166 red body infected lobsters were collected in lobster farms in Van Phong and Cam Ranh Bay (Khanh Hoa province) for diagnostic disease. The result investigated the virial pathogens on red body lobsters, particularly white spot syndrome virus (WSSV) by polymerase chain reaction (PCR), transmission electron microscopy (TEM); and a new type virus by light microscopy and TEM. The study showed that there were 91.6 % (152 out of 166 individals) red body lobsters infected a new virus and 9.6% (16 out of 166 individals) red body lobsters infected WSSV, respectively. The result of artificial infection experiments reported high mortality rate were from 80% to 100% death lobsters with gross clinical sign like red body after 3 - 5 infection days. When infection was successful, the hepatopancreas, connective tissue and gill tissue from infected lobsters were observed by direct light microscopy and TEM. The paper indicated that a new virus was one of causative pathogen of red body disease of cage cultured lobsters in Van Phong and Cam Ranh Bay, Vietnam.

Biography

Dr.VO VAN NHA is an associate professor at Research Institute for Aquaculture (RIA3), Ministry Agriculture and Rural Development, Vietnam. His research interests are Fish Pathology and Treatment.He received a Master's Degree from the Norwegian University of Science and Technology. Right after, started working at RIA3. Dr. Vo Van received Ph.D. in fish pathology from the Nha Trang University (NTU) and confer the certificate of recognition for having met the standards of associate professor title in Aquaculture and Fisheries given under the Seal of the State Council for Professor Title, received Associate Professor in Aquaculture and Fisheries at Tay Nguyen University.

Speaker
VO VAN NHA / Ministry Agriculture and Rural Development, Vietnam

Abstract

Metabolomics is an emerging area of functional genomics, provides novel insights in to system biology of transcriptoma. The seaweeds (marine macro algae) are the economically important renewable resources from the sea. They are different from land plants in their characteristic morphology and physiology. Recent exploration of seaweeds for various bio active chemicals utilized in bio medicals, bioenergy, agrochemicals, cosmetic fields leads to the metabolite signature profiling of the genera. In the present study the metabolomics profiling of the two Halimeda Species Halimeda gracilis (H.G) and Halimeda macroloba (H.M) was conducted by using GC-MS analysis. GC-Ms of the Aqueous extract of the H.G and H.M were compared with the known compounds of standard library. In the GC-MS analysis of HG showed 29 compounds and HM Showed 41 compounds based on peak area molecular weight and molecular formula. The major compounds are Hexadecanoic acid, Dibutyl phthalate, n-Hexadecanoic acid, Octadecenoic acid and Benzenedicarboxylic acid. The chemical compositions of seaweeds were also examined. The major bioactive components of the seaweeds include alkaloids, carbohydrates, Glycosides, Saponins, Phytosterols, Phenols, Flavonoids and Diterpenes. The Present study is an attempt made to give an overview of metabolic signature of HM and HG by GC-MS and Phytochemical analysis. Further studies are needed to isolate the major bioactive compounds for the formulation of potential drugs of organic origin. Hence the present study is useful in the Pharmacological exploration. Metabolomics is gaining prominence in the area of integrated systems biology, and is emerging as an essential analytical tool in the post genomic era.

Biography

Mangaiyarkarasi Ravirajan is Senior Scientist and UGC fellow of the Central Inter-Disciplinary research Facility at Sri Balaji Vidyapeeth University, Puducherry, INDIA. During 1978-2011 she has been working as Professor, HOD and Principal in a college under Thiruvalluvar university. During 2007-2008 he was the Controller of Examinations in Thiruvalluvar University, Vellore, India. She received B.Sc. from Madras University and M.Sc., M.Phil Botany from Annamalai University of India. She received her Ph.D. in Marine Biology from the Centre of Advanced Studies in Marine Biology, Annamalai University in 2002.Currently working on Seaweeds and Marine natural products for health benefits.She is also involved in the seaweed aquaculture training for fisher women folks under the project by Department of Biotechnology, Government of India.

Speaker
Mangaiyarkarasi Ravirajan / Central Inter-Disciplinary Research Facility, Sri Balaji Vidyapeeth University ,India

Abstract

The world shrimp farming industry, with economic value of ‎‏23.58 ‏‎ billion US dollars has the second ‎position in global aquaculture industry in ‎‏2014‏‎. While the shrimp capture increased 2.2 fold from ‎‏1980 ‏‎ to ‎‏2014‏‎, the farmed shrimp production increased as 63.7 fold (FAO, 2016)‎‏.‏ Despite the above progress, and promoting the values of shrimp production in recent years, the ‎incidence of disease has encountered the shrimp culture industry with heavy economic losses. As ‎well as the prevalence of new and sustainable disease, the world and domestic conditions, the ‎environmental and regional conditions, constraints and barriers related to organizational structure, ‎climate change and the low productivity of row material, faced the shrimp industry with big ‎problems. ‎ To attain the sustainable development of farmed shrimp industry, the strategic approaches and ‎action plans, which some of them are noted as follow: ‎Promotion of the quantitative and qualitative indices in farmed shrimp industry through improve ‎the production management, changing the patterns of ‎shrimp production in order to increase the profitability and sustainability of the production chain, ‎establishment the integrated management system in shrimp farm complexes, deployment of ‎integrated shrimp production from hatchery to markets, supporting the unions of small farms, enhance ‎the efficiency of raw materials, Production of shrimp in recirculation system, strengthening of ‎NGOs and giving them more responsibility, improve the role of trade unions in organizational ‎decision making process and promote the regional and international cooperation and contribute in ‎integrated management shrimp culture.‎.

Biography

Dr.Khosrow Aein Jamshid is Head of Persian Gulf SPF Shrimp Research Center, former head of National Shrimp Research Institute of Iran.His research areas are water treatment and water recirculation in aquaculture, non-living aquatic ecology, strategic planning,‎ environmental chemistry and marine pollution. He has been the technical conductor of national and technology research plan of SPF shrimp production and conductor of 2 projects of Iran's shrimp strategic plan vision 7072.Dr.Jamshid is member of 72 professional societies/committees and scientific board member of some journals.

Speaker
Khosrow Aein Jamshid / Shrimp Research Institute Iran

Abstract

Yellow-fin seabream (Acanthopagrus latus) is one of the most valuable and premium fishes in the Persian Gulf for which the artificial propagation and culturing has been carried out in Imam Port and Hengam Island. In this study which was conducted for one year on wild and cultured yellow-fin seabreams On Persian Gulf coasts collectively 276 pieces of fishes had been studied in terms of parasitic diseases and intestinal lesions and 18 different parasite species isolated including: 1. Monogenetic trematodes: Polylabris angifer and Lamellodiscus acanthopagri from gills. 2. Digenetic trematodes: Erilepturus hamati (adults from digestive tract and its cercariae from gills), Accacladium serpentulus (from stomach), A species from family Strigeidae (from intestine) and Asymphylodora imitans (from intestine). 3. Nematodes: Anisakis larvae (from intestine, abdominal cavity, liver and intestine surface), Contracaecum larvae (from intestine and abdominal cavity), Raphidascaris sp. (from intestine), Echinocephalus uncinatus (from surface of ovary, stomach and intestine), Hysterothylacium sp. and Spirocamallanus sp. (from intestine) 4. Acanthocephala: Neoechinorhynchus sp. (intestine) 5. Trypanorhynchid cestode larvae: Rhinoptericola megacantha (from abdominal cavity) 6. Crustaceans: Caligus sp., Lerneanthropus mugilii, Achtheres percarum (from gills) and Lepeohtheirus sekii (from skin). Spirocamallanus sp., Neoechinorhynchus sp., Erileptorus hamati, Accacladium serpentulus, Asymphylodora imitans, Rhinoptericola megacantha, Caligus pagrosomi, Lerneanthropus mugilii, Achtheres percarum and a species of strigeidae are reported for the first time in the world from Acanthopagrus latus, Also Echinocephalus uncinatus and Lepeophtherius sekii are reported for the first time from Acanthopagrus latus in Persian Gulf. The highest and lowest rate of infestation with Polylabris angifer and Spirocamallanus sp. were found in spring and autumn which shows a significant difference. The highest and lowest rate of infestation with Contracaecum sp. and Echinocephalus uncinatus were found in winter and autumn which shows a significant difference. The highest and lowest rate of infestation with Erilepturus hamati and Hysterothylacium sp. were found in winter and summer which shows a significant difference. The highest and lowest rate of infestation with Anisakis sp., Caligus pagrosomi and Lerneanthropus mugilii were found in summer and autumn which shows a significant difference. For other parasites the difference between infestation rate and range of seasons is not significant (P>0.05) The difference between infestation rates with Erilepturus hamati, Accaladium serpantulus, Anisakis sp., Contracaecum sp., Raphidascaris sp., Echinocephalus uncinatus, Hystrothylacium sp., Caligus sp. and weight is significant too in which there is a direct positive relation between weight and infestation rate.

Biography

Dr. Kazem is currently working as senior expert in Aquatic animal Health and Diseases Department at Iran Veterinary Organization. Previously he has worked as General Directorate, Aquatic animal Health and Diseases Department, Iran Veterinary Organization.

Speaker
kazem abdi khazineh / Iran Veterinary Organization Iran

Abstract

Hilsa (Tenualosa ilisha) is the national fish of Bangladesh and a primary source of subsistence and seafood in Southern Asia. However, the stocks are in depletion due to global environmental changes. Decreased Hilsa productivity negatively affected fishers' income, livelihoods, and well-being. Conversely, increased Hilsa production would boost fishers' resilience regarding subsistence, identities, and cultures. In Bangladesh, existing fisheries governance mechanisms supports top-down management and at the same time, discourage local institutions to manage their resources. Therefore, the fishery challenges are complex, and an alternative management approach is necessary. This research aims to explore the effectiveness of a co-management approach in Hilsa fisheries to enhance the resilience of fishing communities. The research applies theories and concepts relating to resilience and co-management. Empirical data are collected through in-depth individual interviews and focus group discussions to understand the strengths and weaknesses of the existing Hilsa conservation and management policies in Bangladesh, power relations between the government and the Hilsa fishery stakeholders. The result shows that the Hilsa catch is decreasing due to illegal net uses, juveniles and brood stock harvestings and improper fishing regulations; socio-economics conditions of the fishers including other stakeholders are affected by the imposed ban period and inadequate allocation of incentives by the government, unequal distribution of power: practiced by the government and elites. Fisher urges to use of local ecological knowledge and their active participation in the management plan and decision making, provide alternative income generating activities and loan from government with easy regulations during the crisis period which eventually can enhance the resilience of the fishing communities.

Biography

After the MSc in Aquatic Ecology from University of Bremen, Germany, Mozumder joined as a Doctoral researcher at the University of Helsinki. His studies target to engage the community in exploring together how co-management is linked to the landscape and to manage resources and resilience by using qualitative research method.

Speaker
Mohammad Mozumder / University of Helsinki

Abstract

There is an inconsistent relationship between the dietary [Cd] and whole body tissue of marine organisms that may be related to the specific organs and/or tissues in which accumulation occurs, which could not be accurately quantified by analysis of the whole body. The contribution to [Cd] of the aqueous exposure compared to the diet, which was observed in the bioaccumulation in several aquatic organisms, revealed specific differences between species, with no discernible pattern. Three areas in the interior sea of southern Chile were investigated: two with industrial aquaculture activity (Yal Bay and Caucahue Channel) and one without anthropic activity (Pitipalena fjord), which is a natural bank with estuarine behavior. Mussel samples taken between June 2014 and December 2015, which generated hepatopancreas (HEP) and soft tissues (ST) were analyzed for concentrations of Cd and treated statistically against diurnal and nocturnal seston, water, benthic suspensions (RES), and sediments (SED). It was possible to account for the balance of Cd in mussels through consideration of the nocturnal seston, when specifically hepatopancreas is analyzed (Spearman rs +0.63, p-value: 0.002). This did not occur with seston-day, where previous studies have proven unsuccessful. There are no significant differences in the comparison of the sets of correlations between Yal Bay and Caucahue Channel (p-value: 0.33). Between these areas and Pitipalena Fjord there is a discrete difference (p-value: 0.84 and 0.56, respectively).

Biography

J Max Blanc is PhD in Aquaculture Sciences, Master in Environmental Engineering, Master in Materials Sciences, Master in Business Administration and Market Strategy and Metalurgist engineer. He is an academic and researcher at the Universidad Austral de Chile and Director of Scientific Research Projects in the field of chemistry of trace metals in oceans and marine organisms. He has been a leader in technological innovation in the areas of chemical metallurgy (two patents for inventions in pyrometallurgical and hydrometallurgical processes), feed for salmon, livestock. He has scientific publications in the areas of crystallochemistry, molybdenum chemistry, processes and innovations.

Speaker
J Max Blanc / Universidad Austral de Chile, Chile

Abstract

Leeches have been reported to harbor several important fish pathogens including spring viraemia of carp virus (SVCV), infectious hematopoietic necrosis virus (IHNV), viral hemorrhagic septicemia virus (VHSV) and also may contain blood protozoa. In the present study, leeches were collected from water bodies located in Kurdistan province, Iran. The specimens were tested for IHNV, VHSV and infectious pancreatic necrosis virus (IPNV) using PCR method. The results showed that two different species, Hemiclepsis marginata and Hirudo medicinalis were infected by IPNV among the seven species which studied. The contaminated leeches were found in the areas that polluted with unrefined sewage coming from upper rainbow trout (Oncorhynchus mykiss) fish farms. In Addition, the fish farms in the vicinity of these area were afflicted by IPNV 9 month ago. The results show that the virus of IPN is present in leeches, like H. marginata and H. medicinalis, suggesting the potential of leeches as a source of IPN virus in fish farms.

Biography

Dr. Behnam Salimi has completed his PhD from Science and Research Branch, Islamic Azad University of Aquatic Animal Health and Disease, Iran and His thesis about A Survey and identify on fresh water resources leeches of Kurdistan province, Iran And a review on their possible pathology and pathogenesis in fish. He is the member of Iranian Aquaculture Society and the Assistant Professor of Department of Aquatic animal Health and Disease, Faculty of veterinary medicine. He has published more than 22 papers in Iranian and International journals and conferences.

Speaker
Behnam Salimi / veterinary medicine, Sanandaj Branch, Islamic Azad University

Abstract

Microsporidia are one of common parasites of fishes, The marine fishes are subjected to several protozoan parasites of wich sporozoan take superior position. A total number of 476 of wild marine Dusky Grouper (Epinephelus guaza), captured from the West North shore of Mediterranean sea at Motrouh governorate (Egypt) from September (2006-2007). The average body weights of examined fish from 100-250 gm. The fish were investigated for Microsporidiosis and the water was examined for important physical and chemical parameters. The results of these investigation revealed that the fish appeared abnormally and the post mortem findings of Grouper fish was presence of variable numbers of cysts in fish gills ranging from oval to round in shape and white to yellowish in colour. The intensity of infection per gill arch was varying from 1-5 xenomas (tumer like) in gills only and no nodules in any internal organs or musculature were seen. The microsporidian protozoa was identified as Glugea anomala which react with Gram ans PAS stain positively. The seasonal prevalence of Glugea anomala from Dusky Grouper fish were recorded as, spring (58%), autumn (71%), the lowest infestation rate was recorded in winter (30.33%) and the highest was in summer (82.9%). The total prevalence of Glugea anomala among wild Dusky Grouper fish was found to be (63.2%). The prevalence of infestation also differ according to body weight, the highest infestation rate was found in 200-250 gm (88.8%), followed by 150-200 gm (50.5%) and finaly 100-150 gm (43.3%). The highest PH (7.3) was recorded in summer and lowest (5.7) in winter, the highest chloride value was 240 mg/L at autumn. The total hardness was higher in summer 290 mg/L and lower in winter 217 mg/L. The important histopathological alteration in gills was destruction of gills filaments with degenerative changes and infiltration of mononuclear leucocytes.

Biography

Speaker
Amany Mohamed Kenay / National Research Centre

Abstract

Polymerase chain reaction (PCR) was conducted on 160 catfish DNA using the vitellogenin for the selected reproductive primers. DNA sequence analysis was used to analysis the differential expression of vitellogenin from the catfish. Two sets of PCR were conducted that revealed the two vitellogenin alignments using the CLC Sequence Viewer software 7. The first alignment generated 381 nucleotides out of which 281 had 100% consensus resolving the samples to be aligned by 75%. Second alignment revealed 384 nucleotides, only 15 had 100% consensus. In other words, the samples are aligned by 4%. Clarias male had 384 nucleotides; Heterobranchus female had 165 nucleotides and is the main event responsible for the enormous growth of the oocyte in most teleost. Vitellogenin is not normally found in male fish, due to the absence of endogenous oestrogenic stimulation but this study observed that the males of the two clariid species possess vitellogenin. Molecular weight observed in the two plates indicated that male Heterobranchus and male Clarias resolved same molecular weight of vitellogenin both of which are higher than the two strains of Heterobranchus females. The indoor artificial propagation study observed that the rate of hatchability and survival is higher in Clarias species compared to Heterobranchus. Higher number of unhatched eggs resulted in low hatchability rate in H. bidorsalis could be linked with the presence of oestrogen which could have affected testicular composition. The study revealed the presence of vitellogenin in the male H. bidorsalis species. Therefore, assessment of vitellogenin in the genome of H. bidorsalis has revealed the presence of oestrogen which mostly results in feminization of male species and hinders successful fish production.

Biography

Speaker
AGBEBI OLUBUNMI TEMILADE / Federal University of Agriculture

Abstract

Water hyacinth (Eichhornia crassipes) despite its acclaimed ``high nuisance value``, prove having immense economic value to the fisher folks in the riverine areas of Ondo State, Southwest, Nigeria when used as passive Fish Aggregating Device (FAD) Extensive Culture Receptacles, in a two-year study. The WH-FAD, (WH, denoting Water hyacinth), isolated 0.18 ha of rivulets and creeks of appreciable salinity level (5%). Fish population estimate obtained was, 2,200 WH_FAD-1. This figure fell within the range of calculated values, P (1,939≤N ≤2,460) = 0.95 that amounted to a yield of 3.7 tons WH-FAD-1. Six (6) species of finfish and three (3) of shellfish of combined total body weight of 368,860 g, were recorded. The dominant families (and species in the study area) were Cichlidae comprising Tilapia guineensis (38.7%) and Sarotherodon melanotheron (31.0%); Claridae (Clariasgariepinus (0.7%) and,Palaemonidae (Macrobrachium vollenhovenni and M. macrobrachion) recording 0.56%, of total catch.

Biography

Speaker
Olorunwa Eric OMOFUNMI / FEDERAL UNIVERSITY OYE EKITI

Abstract

Some biological characteristics of Carasius auratus were studied in Shadegan Wetland. Monthly samples were collected from five stations: Doragh, Rogabe, Khorosy, Salmane and Atish. During project implementation, 526 specimens were measured from April 2014 to March 2015. Mean±s.d length values for the male and female were calculated as 164±35 (123-264), 198±40 (106-322) mm respectively and mean±s.d weight values were 81±68(23308),148±96(18-650)g respectively. The length-weight relation was calculated as Y=0.000008L3.13 (R2=0.96) for male, Y=0.000009L3.10 (R2= 0.93) for female, and length and weight relationship was significant at the level of 0.05. The time of spawning was determined from April to November, and length at maturity (LM), weight at maturity (WM) and production per biomass (P/B) were calculated for male and female as below LM=163 mm; WM=37 g and P/B= 0.74 respectively. L∞, K, t0 were estimated to be 346 mm, 0.36 per year, and -23 / 0 respectively. Natural mortality, fishing, total, and exploitation coefficients were 0.75, 0.77, 1.52, and 0.51, respectively.

Biography

Speaker
seyed ahmad reza Hashemi / Iranian fishery

Abstract

The aim of this study was to assess the effects of sublethal concentrations of some pollutants (cadmium and Malathion) on the levels of glucose, creatinin, cholesterol, and ALT enzyme in the serum blood and its accumulation in common carp fingerling muscles as a long experimentally study. Triplicate groups of fish and a control group (30 fish/group) were exposed to sublethal concentrations (10 -20% of LC50-96 hr values) of cadmium and malathion for a period of 60 days. The results indicated that Changes in serum glucose levels of Cyprinus Carpio exposed to 10 and 20% LC50 of cadmium. Was decreased but statistically not significantly at low and high concentration of cadmium after 3 and 6 weeks of exposure. However after 9 weeks of exposure serum glucose level was decreased significantly at high concentration of cadmium. Creatinin level was not changes significantly at low concentration of cadmium after 3and 6 weeks of exposure. However after 9 weeks of exposure creatinine level was increase a significantly at low and high concentration of cadmium. A GPT level was increased significantly at low and high concentration of cadmium after 3, 6 and 9 weeks of exposure respectively at low and high concentrations. Total cholesterol a level was not changes significantly at low and high concentrations of cadmium after 3, 6 and 9 weeks of exposure. Concentration of Malathion accumulated in muscles of Cyprinus Carpio was (491 ppm) and (655.9 ppm) at low and high concentrations respectively after 9 weeks of exposure. A glucose level was increased significantly at low and high concentrations of Malathion after 3, 6 and 9 weeks of exposure. creatinine level was changes significantly at high concentration of Malathion after 3 weeks of exposure. After 6 weeks of exposure, was not changed significantly at low and high concentrations Malathion. However after 9 weeks of exposure level was increased significantly. GPT level was increased significantly at high concentration of Malathion after 3 weeks of exposure. However after 6 and 9 weeks of exposure level was not changed significantly at low and high concentrations of Malathion. Total cholesterol level was not changes significantly at low concentration of malathion after 3, 6 and 9 weeks of exposure.

Biography

Speaker
mohamed / National Institute of Oceanography and Fisheries, Inland Water and Aquaculture Branch, Al-Kanater Al-Khairya Fish Research Station, Egypt

Abstract

Lake Tana has a remarkable fish diversity and its fisheries have been supporting a livelihood of more than 30,000 households. Fishery independent survey was conducted manthly at four sites from May 2016 to April 2017 to investigate the abundance, distribution and size at maturity (FL50) of the endemic Labeobarbus species. Of the 15 species observed, five species constituted 88% of the total catch. The current total monthly catch of Labeobarbus spp. has declined by more than 85% and 76% from the total monthly catches in 1993 and 2001, respectively. Moreover, the overall mean Catch Per Unit Effort (CPUE) of Labeobarbus in 2016-2017 was only 2 kg/trip, while it was 63 kg/trip in 1991-1993, 28 kg/trip in 2001 and 6 kg/trip in 2010. Length distribution of the dominant Labeobarbus spp. was sharply declined and their size at first maturity was lower than previous reports. The most likely explanations are the ever-increasing illegal fishing and environmental degradations. Therefore, results indicate the need for urgent fisheries management.

Biography

Shewit Gebremedhin is a PhD student at University of Ghent, Belgium. He received a B.Sc. from Bahir Dar University, Ethiopia in 2008, and an M.Sc. from the same university in 2011. From 2011 to 2016 he worked at Bahir Dar University as a lecturer.

Speaker
Shewit Kidane / University of Ghent

Abstract

Inland fishing has an important role on the socio-economic development of the developing countries. This economic activity will be a companion of agriculture in the populated countries like India. Fishing is not only a source of income but also provider of necessary nutrients to our body. Moreover, fishing influences local and national economy, create scopes of engagement for the rural women and marginal farmers, alleviate poverty through employment generation, helps the development of ancillary industries and infrastructure, conserves the aquatic ecosystem and biodiversity etc. Overall it helps in the total development of a region. In the present chapter, the above-mentioned facts have been highlighted by analyzing the scope and prospect of inland fishing in Nadia district of West Bengal in India. Here the main focus is given to how much the socio-economic development of this district have been done through inland fishing and what will be its possibilities in this regard to achieve the aforesaid goal with proper planning.

Biography

eena Soni is working at Jai Narayan Vyas University, Jodhpur (Raj), India. Veena Soni has published many research papers in national and international journals.

Speaker
VEENA SONI / JAI NARAYAN VYAS UNIVERSITY, JODHPUR (RAJ), India

Sessions:

Abstract

Health status of red swamp crayfish, Procambarus clarkii and mosquito fish, Gambusia affinis collected from Elmansoria canal, Giza, Egypt was investigated. The canal is known to receive lofty loads of pollutants from diverse anthropogenic sources. 113 bacterial isolates were obtained from the investigated fish specimens. Isolates were phenotypically identified as, Aeromonas hydrophila 26.54%, Vibrio parahaemolyticus 21.23%, Pseudomonas fluorescens 14.15%, E. coli 10.61%, Citrobacter sp. 7.96%, Enterobacter sp. 8.84%, Staphylococcus sp. 4.42% and Micrococcus sp. 6.19%. High gill infestations with Centrocestus sp. encysted metacercariae were noticed in mosquito fish. No parasitic infestations were recorded in crayfish. Challenge experiment confirmed the pathogenicity of Aeromonas hydrophila isolates. The water analysis revealed high heavy metals levels with values, Ni 0.71, Pb 0.34 and Cd 0.2 ppm while Zn and Cu were in normal values. Metals analysis in crayfish and mosquito fish tissues denoted bioaccumulation. Crayfish muscles showed, Ni >Zn >Cu >Pb>Cd while their levels in mosquito fish demonstrated, Ni >Zn>Pb>Cd>Cu. Proliferative, degenerative and necrotic alterations were evident in histological sections. Results suggest that both crayfish and mosquito fish can serve as carriers for some fish disease pathogenic agents and a convenient tool for biomonitoring aquatic pollution.

Biography

Speaker
Amany Mohamed Kenay / National Research Centre

Abstract

Aerators had being used to enhance dissolved oxygen and important to increase stock density, growth, improvement fish yield and is widely used in fish culture system. Catfish production is one of the largest segments of fish culture in Nigeria. However, catfish effluents, which usually deteriorate the environment, need to be controlled. The aim of this study was to find out the more efficiency aerators to supply enough dissolved oxygen and reduction of concentration of catfish effluent. The volume of catfish effluent was collected into two basins (A and B) and diluted at given ratios. The paddle-wheel and Spiral aerators were installed in the basins respectively. Aerators performance evaluation was conducted using unsteady state test. Physico-chemical properties of water sampled from the tested ponds were determined in accordance with the American Public Health Association standards (APHA, 2005). The results indicated that spiral aerator performed better that paddle-wheel aerator because it achieved higher overall oxygen -transfer coefficient, standard oxygen transfer rate and standard aerator efficiency at the same volume of water, speed, power and depth of operation; it is also performance better that paddle-wheel aerator on catfish effluent reduction in the same environmental conditions. Hence, blade configuration is the main factor responsible to difference in their performance.

Biography

Speaker
Olorunwa Eric OMOFUNMI / FEDERAL UNIVERSITY OYE EKITI

Abstract

Multi-element (48) analysis was carried out of various fish species collected from the river Buriganga, the most polluted river in Bangladesh, during monsoon (August 5, 2015) and winter (February 7, 2016) to assess human health risk through consumption of toxic elements. Ten various fish species were collected in monsoon and seven different fish species were collected in winter. Sixteen elements i.e., Be, V, Cr, Mn, Ni, Cu, Zn, As, Se, Mo, Cd, Ba, Hg, Pb, Bi and U, were taken in consideration due to their toxicities on human health. Results show that concentrations of the elements in various fish species were higher in winter than those in monsoon. Among the 16 elements, Mn, Cu, Zn, Cd, Ba, Pb were above Food Safety Guideline (FSG) by WHO/FAO in some fishes in winter but those were much lower in monsoon. The THQs and HI values were less than 1 in both seasons except M. vittatus (2.75) indicating less concern for non-carcinogenic health hazard. TR values of Cr and Ni suggested low cancer risk of some fishes while As, Cd and Pb have shown no cancer risk at all in monsoon. In winter, Cd and Ni showed moderate cancer risk through consumption of all the contaminated fishes except N. notopterus for Ni while Pb and Cr have shown low cancer risk to the exposed population except for Cr which has shown moderate cancer risk for A. testudineus. It can therefore be concluded that there is human health risk by consuming fish from river Buriganga.

Biography

Ms Aklima Nargis is currently engaged as a doctoral student (2017-2021) under the supervision of Prof. Minggang Cai in the Coastal and Ocean Management Institute, Xiamen University, China. Ms Nargis received an MMA degree from the Coastal and Ocean Management Institute (Xiamen University) under the supervision of Prof. Minggang Cai. She received her BSc (Honors 4 years) from the Department of Zoology, University of Dhaka, Bangladesh in 2004. Ms Nargis also received her first MS degree in Fisheries from the Department of Zoology (University of Dhaka) in 2006. Ms Nargis published three research articles in internationally reputed journals and another three are under reviewing process.

Speaker
Aklima Nargis / Ximen University, Fujian, China

Abstract

Cartilaginous fishes, without sufficient genetic information, have fantastic scientific and practical value on single-domain antibodies (sdAbs). Whitespotted bamboo shark (Chiloscyllium plagiosum) occupies some ideal characters to be domesticated such as docile nature, small size and longevity for exploiting sdAbs. In my report, we denovo assembled the chromosome level genome sequence of white-spotted bamboo shark using BGISEQ-500 sequencing platform and Hi-C technology, as far as we known, which is the first chromosome level reference cartilaginous fish. With the reference-scale genome, we accomplished comparative genomic analysis among interrelated species. Firstly, we illustrated the cause of this larger genome, interpreted by abundant repetitive sequences and found four particular chromosomes which evolved faster and were closely correlated to immune system. Then we supplied an intriguing perspective on the phylogenetic relationships that coelacanth was closer to cartilaginous fish lineage than zebrafish and detected positive selected genes involved in characteristic different from teleost. Furthermore, analysis of LTRs and MHC molecules revealed the evolutionary process of immune system from agnatha to elasmobranch then to teleost meanwhile we found a new clue for MHC II molecules’ coming first and luxuriant immunoglobulins domains including new antigen receptor (IgNAR). Our study paved the way for better understand of fish evolution and paint a magnificent blueprint for the antibody drugs.

Biography

Guangyi Fan is director of BGI-Qingdao, a branch of BGI-Shenzhen, focusing on the omics research of marine life. He received a B.S. from Harbin Medical University in 2010 and his Ph. D in Biomedical from the University of Macao in 2018. From 2010 to now he worked at BGI-Qingdao, expert in plant and animal genomes research.

Speaker
Guangyi Fan / BGI-Qingdao, China

Abstract

The present study was carried out to reveal the Comparative Growth Performance of Indian Major Carp, Catla catla (Hamilton, 1822) in Rural Wild Earthen Pond on Traditional Feed and Commercial Feed like; Rice Bran (RB), Mustard Oil Cake (MOC) and commercial available floating feed (FF) respectively. This 60 days experiment was conducted under wild earthen pond with productive black soil at Simradi Village in Umaria district Madhya Pradesh India. This rearing pond was in area of 8000 sq. Feet (Pond approx dimension 100 x 80 x 2.50 ft.) and separated through net in two equal half’s like Pond A and B respectively. During this experiment fry of Catla catla was collected from Government fisheries production unit Umaria District (MP). Besides this, stocking density of fishes was 800 fry in each part of experimental pond. During this experiment two different kinds of feed stuffs like; traditional ingredient (TF) with (Rice+ MOC) or (1:1) in Pond A and Commercial available floating feed (CF) with in Pond B used as diet respectively. Initially, experiment was initiated with mean initial length 2.6 cm and weight 0.35 g of catla fry in both experimental ponds. Randomly we measured length and weight near about three times throughout the whole experiment. At last day of experiment we noticed a productive growth performance in pond B as compare to A in all prospective like; Survivability rate 77.5 %, mean final length 18 cm & weight 25 gm and specific growth rate (SGR) 0.63 except feed conversion ratio (FCR) 0.04 respectively. On the other hand, water quality parameters showed fluctuations in both Ponds like pH, Temperature, Dissolve oxygen and Transparency. All in all with commercial feed stuff catla has noticeable results as compare to traditional feed (FF) respectively. This experiment will give thrust to the fisheries and aquaculture sector.

Biography

Speaker
Paramveer Singh / Barkatullah University Bhopal ,India

Abstract

Laboratory study was undertaken to evaluate some physical and haematological changes resulting from the exposure of freshwater fish Clariasgariepinus to sub lethal concentrations (0.1mg-1 and 0.4mg-1 of ion (fe) chloride, and (0.1mg-1 and 0.4mg-1 of lead (Pb) chloride) in the water for a period of 15 days. Five(5) groups of twenty fishes each were subjected to serial dilutions of the stock solution of iron (fe) 0(control), 0.1mg-1 and 0.4mg-1 and lead (Pb) 0(control), 0.1mg-1 and 0.4mg-1 in a large plastic bowl of 60 litres capacity for 15days at the end , blood sample were taken from the control and experimental fish. Blood was assayed for selected haematological parameters (haematocrit, haemaglobin, red blood cells counts, white blood cell counts, differential white blood cell counts, erythrocyte sedimentation rate, and total plasma protein and plasma glucose concentration). The derived haematological indices of mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC) were calculated. 0.1mg-1 and 0.4mg-1 of lead (Pb) when compare to control. There is no significant difference on differential white blood cell count in iron (fe) concentration except Neutrophill and lymphocytes and there is a decrease in red and white blood cells on different concentrations of lead (Pb) 0.1mg-1, 0.4mg-1 and iron(fe) 0.1mg-1, 0.4mg-1 treatment when compare to their control. In conclusion, the changes observed indicate the haematological parameters can be used as an indicator of iron and lead related stress in fish on exposed to elevated iron and lead levels.

Biography

Speaker
Omovwohwovie Erhowose Emmanuel / Delta State University, Nigeria

Abstract

There is a growing demand for alternatives to fish farming to reduce production costs in many aquaculture enterprises. Plant-based protein supplements were reported as potential replacement for fish farming. We analyzed biochemical values and muscle proteome to evaluate differences between grouper juvenile (Epinephelus coioides) fed with low protein diet (LP diet) and plant-based protein diet (PP diet). The size of the fish fed with LP diet was larger and better feed conversion ratio than the fish fed with PP diet in comparison to their control diets. PP diet feeding resulted in more stable expression of specific structural proteins (αMHC, tropomyosin 1 and actin) and creatine kinase, suggesting PP diet provide favorable protein source to develop fish muscle. Nevertheless, the feed intake of PP diet was less than the intake of LP diet, resulting in lipolysis and increased serum triglycerides in the PP diet fed fish. We also found the increased expression of adenylyl cyclase and transposase in the muscle of fish fed with LP or PP diet, implying the correlation of protein diet with environmental adaptability of the fish. Our findings demonstrate that PP diet can be used as an alternative feed to provide protein source for fish development, and the improvement of the palatability would increase its value in grouper farming industry. Furthermore, our study provides the initial molecular insight in grouper nutrition and biology.

Biography

Speaker
Yuan-Tih Ko / National Taiwan Ocean University

Abstract

Fisheries and aquaculture play a critical role in providing food and income in many countries worldwide. A large proportion of the human population in most countries currently depend on fisheries and aquaculture for their livelihoods. However, the wild fish stocks are under serious threat due to the ever increasing human population. As such, our focus should now be on sustainability issues related to fisheries and aquaculture. There is need to carefully plan and establish proper regulations and policies that will enable sustainable utilization of fisheries and aquaculture resources. Presently, aquaculture is receiving more attention in the food producing industry than any other sectors globally. It is seen as the only solution to increasing fish production in order to meet the global demand for fish. Although aquaculture production is reported to have significantly risen at an annual average growth rate worldwide, lack of quality fish seed and feed is still a major challenge. Developing states are the worst affected due to lack of proper technological advances to enhance research activities for development. Fish seed and feed are the key factors determining the profitability of aquaculture ventures. The production of quality fish in aquaculture depends on the quality of fish seed used and its culture environment. The current major threat to quality fish seed in Africa is interspecific hybridization of fish species which is being enhanced primarily due to lack of strong regulations governing the management of fisheries in most countries. Interspecific hybridization leads to reduced biodiversity and increased impurity of fish strains used in aquaculture which in turn leads to low aquaculture productivity.

Biography

Sahya Maulu is a Corporate Consultant on Fisheries and Aquaculture at Twatotela Co-operative in Zambia where he has also served as an Aquaculturist on several occasions since 2014. He is also the currently Board of Directors Chairperson and Co-founder of the Center for Innovative Approach Zambia (CIAZ), a Non-governmental Organization (NGO) in Zambia since 2017. He attended a short training course on Aquaculture for African countries at Freshwater Fisheries Research Center (F.F.R.C) in People’s Republic of China in 2017. He has been offered a place to study for Masters of Science in Sustainable Aquaculture at Curtin University in Australia for 2019 intake. He obtained a BSc. degree in Fisheries and Aquaculture in 2016 from the Copperbelt University in Zambia.

Speaker
Sahya Maulu / Twatotela Co-operative, Zambia

Abstract

In this study, Biomass and Production of Carasobarbus luteus in Shadegan wetland were studies. Sampling was carried out seasonally at five stations of Shadegan wetland include Doragh, Rogabe, Khorosy, Salmane, Atish and during this study, 1331 specimens were measured and weighed from April 2013 to March 2014. Spring and Autumn season with the highest fish biomass and lowest fish biomass and Salmane and Atish station highest fish biomass and lowest fish biomass were sampled. The mean biomass of fish in four seasons Shadegan 39 (kg/ha) and the amount of biomass in different station different seasons were not significantly different (P>0/05) in different season were significantly different (P<0/05). There were no significant differences between Leslie and Dulary methods for estimating fish biomass (P >0.05). Habitat production index (HPI) in Shadegan wetland was 36 (kg/ha) and the ratio of production to biomass was P / B =1.05, and it seems, this species has a high production potential.

Biography

Speaker
seyed ahmad reza Hashemi / Iranian fishery

Abstract

The aim of this study was to assess the effects of sublethal concentrations of some pollutants (cadmium and Malathion) on the levels of glucose, creatinin, cholesterol, and ALT enzyme in the serum blood and its accumulation in common carp fingerling muscles as a long experimentally study. Triplicate groups of fish and a control group (30 fish/group) were exposed to sublethal concentrations (10 -20% of LC50-96 hr values) of cadmium and malathion for a period of 60 days. The results indicated that Changes in serum glucose levels of Cyprinus Carpio exposed to 10 and 20% LC50 of cadmium. Was decreased but statistically not significantly at low and high concentration of cadmium after 3 and 6 weeks of exposure. However after 9 weeks of exposure serum glucose level was decreased significantly at high concentration of cadmium. Creatinin level was not changes significantly at low concentration of cadmium after 3and 6 weeks of exposure. However after 9 weeks of exposure creatinine level was increase a significantly at low and high concentration of cadmium. A GPT level was increased significantly at low and high concentration of cadmium after 3, 6 and 9 weeks of exposure respectively at low and high concentrations. Total cholesterol a level was not changes significantly at low and high concentrations of cadmium after 3, 6 and 9 weeks of exposure. Concentration of Malathion accumulated in muscles of Cyprinus Carpio was (491 ppm) and (655.9 ppm) at low and high concentrations respectively after 9 weeks of exposure. A glucose level was increased significantly at low and high concentrations of Malathion after 3, 6 and 9 weeks of exposure. creatinine level was changes significantly at high concentration of Malathion after 3 weeks of exposure. After 6 weeks of exposure, was not changed significantly at low and high concentrations Malathion. However after 9 weeks of exposure level was increased significantly. GPT level was increased significantly at high concentration of Malathion after 3 weeks of exposure. However after 6 and 9 weeks of exposure level was not changed significantly at low and high concentrations of Malathion. Total cholesterol level was not changes significantly at low concentration of malathion after 3, 6 and 9 weeks of exposure.

Biography

Speaker
mohamed yahya / National Institute of Oceanography and Fisheries, Internal Water Branch,Egypt

Abstract

Mebendazole (MBZ) is a broad spectrum antihelminthic drug. The objective of the study was to determine the acute effect of MBZ on the tropical fish, Labeo rohita fingerlings. Two experiments were set for the study. In the first experiment fishes were exposed to various concentrations of MBZ in water for 120 h and the percent mortality was recorded. The LC50 value was determined by Finney’s Probit Analysis Method. Behavioral patterns were observed critically during the experiment. The second experiment was to evaluate the responses of L. rohita fingerlings due to the exposure to the sub-lethal concentrations mebendazole in water. In the present experiment, 24 treatments (three MBZ concentrations: control- 0.0 mgl-1, T1-0.15 mgl-1 and T2-0.3 mg l-1 combined with eight exposure times at 0, 6, 12, 24, 48, 72, 96 and 120 h) with three replicates were used. Different hematological parameters such as red blood cell (RBC), white blood cell (WBC), packed cell volume (PCV), hemoglobin (Hb) and immunological parameters like total protein content, lysozyme activity, nitro blue tetrazolium (NBT) activity and anti protease activity were studied. The present studies showed that the sublethal concentration of MBZ has significant (p<0.05) influence on the fish responses.

Biography

Speaker
MUKTA SINGH / CENTRAL AGRICULTURAL UNIVERSITY

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