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The concept of population and unit stock. Biological structure of fisheries resource in space and time. Indicators of dynamics in a fishery resource. Characteristics of unit and mixed stock. Data requirements for stock assessment. Segregation of stocks. Principles of stock assessment. Population age structure. Theory of life tables. Von Bertalanffy growth parameters. Graphical models. Monte Cario simulation model and ECOPATH model. Estimation of total fishing and natural mortality. The concept of yield, yield in number and yield in weight, yield per recruit, yield curve. Yield models. The concept of Maximum Sustainable Yield and Maximum Economic Yield. Biological symptoms of under-fishing and over-fishing. Growth over-fishing and recruitment over-fishing. Eumetric fishing. Open access fisheries. Fisheries regulations. CPUE. Trawl selection and gillnet selection. Analytical models of fish stocks.
Study of length – weight relationship, segregation of stock using direct methods. Study of analytical models: Beverton and Holt model. VBGF, Pauly’s integrated methods, graphical models. Estimation of Z, F and M. estimation of net selectivity coefficient. Fitting of surplus production model: Schaeffer model, Fox model. Study of yield isopleth diagrams. Micro-computer packages ELEFAN, FISAT.
1. Gulland, J.A. 1989. Fish Stock Assessment. John Wiley & Sons Inc., New York.
1. Hilborn, R. and Walters, J.W. 1992. Quantitative Fisheries Stock Assessment. Chapman & Hall Press, London.
2. Kuderskii, L.A. 1995. Population Dynamics of Commercial fish in Inland Reservoirs. Oxonian Press Pvt. Ltd., New Delhi.
3. Sakgawa, T.G. (Ed.) 1995. Assessment Methodologies and Management. Oxford & IBH Publishing Pvt. Ltd., New Delhi.
Theory 1. Introduction to fish population dynamics and stock assessment- Introduction
Theory 19. Stock recruitment relationship- Models used for stock recruits and parent stock
School of Fisheries Centurion University of Technology and Management (CUTM) Paralakhemundi- 761211 Odisha, INDIA Cleared ICAR – ASRB NET in FISHERIES RESOURCE MANAGEMENT B.F.Sc. (Fisheries Science)- 2013, College of Fisheries, Mangaluru, Karnataka Veterinary, Animal and Fisheries Sciences University (Bidar), Karnataka, India M.F.Sc. in Department of […]