Fish Population Dynamic and Stock Assessment

Course outline

Theory

Hours	Topics
	Stock - stock assessment - definition - objectives
	Stock concept
	Problems in estimation of age and growth in tropical fishes
	Pauly's integrated method
	Growth equation - relative growth rate, mean growth rate
	Gulland and Holt Plot
	Length and weight based VBGF equation
	Ford Wolford and Chapman's method
	Fitting growth curves-computer programmes-ELEFAN system
	Fishing effort
	Mortality estimation in tropical fishes
	Estimation of Z from CPUE
	Estimation of Z from linearized growth curve
	Beverton and Holt equation
	Fishing mortality- assessment in tropical waters
	Natural mortality- assessment in tropical waters
	Virtual population analysis
	Stock assessment model- tropical fishes
	Beverton and Holt model
	Thompson and Bell model
	Logistic model
	Merits and demerits of production model
	Swept area method
	Multispecies - multi fleet problems
	Stock recruitment relationship
	Cohort analysis
	Sampling resources estimation
	Catchability co-efficient, exploitation rate and ratio
	Gill net selectivity
	Trawl net selectivity
	Maximum sustainable yield
	FISAT – Computer packages in stock assessment
	Sustainable measures for conservation of marine fishes in Indian waters
	Problem – Suggestion in tropical fish stock assessment

Practical

No. of practicals	Topics
	Gulland and Holt plot
	VBGF plot
	Ford Wolford and Chapman's equation
	Estimation of MSY and FMSY
	Estimation of MEY and FMEY
	Gill net selectivity
	Estimation of 'Z'
	Estimation of 'F'
	Estimation of 'M' and 'q', 'E' and 'U'
	Length frequency analysis
	Sampling of fish from fish landing centers
	Cohort analysis.
	Analytical model(l)
	Analytical model(2)
	Swept area method
	Revision