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Now showing items 31-40 of 53
Collection of juvenile mullet species from a brackishwater tidal farm in Nigeria
Type: Journal Article
The major constraint to the development of aquaculture in Nigeria has been the non-availability of fingerlings in required numbers of cultivable species. A specifically designed trap to collect mullet (Liza falcipinnis; ...
Beverton and Holt equations: spreadsheet functions and uncertainty
Type: Journal Article
This contribution illustrates how modern spreadsheets aid the calculation and visualization of yield models and how the effects of uncertainties may be incorporated using Monte Carlo simulation. It is argued that analogous ...
Length-weight relationship of fishes and cephalopods from the Balearic Islands (Western Mediterranean)
Type: Journal Article
Length-weight relationship (LWR) parameters of 72 species of fishes and 15 species of cephalopods caught in the Balearic Islands demersal fishery are reported. This is the first compilation of LWR for these groups in the ...
Photographic image analysis for morphometric studies of tilapia
Type: Journal Article
Biologists have long employed morphometry as a tool in identification, grouping of populations and stock identification of fish. For tilapias, studies have been made on the variability of morphomeric characters in Egyptian ...
Stock assessment of the anchovy Cetengraulis mysticetus (Pisces: Engraulidae) in the inner part of the Gulf of Nicoya, Puntarenas, Costa Rica
Type: Journal Article
A study of the population dynamics of the anchovy Cetengraulis mysticetus is presented, based on two sets of length-frequency dates from the artisanal fishery of the Gulf of Nicoya, Costa Rica, between 1989/90 and 1992/93. ...
Marine fisheries of Karnataka State, India
Type: Journal Article
This contribution provides an overview of the marine capture fisheries off the coast of Karnataka State, India. It covers the main fisheries and fishing gears, production trends (by main species /groups and gears), assessment ...
Spawning stock biomass-per-recruit analysis: a timely substitute for stock recruitment analysis
Type: Journal Article
Relative biomass per recruit of adult (i.e. sexually mature) fin to shellfish is shown to help in identifying levels of fishing mortality likely to lead to recruitment overfishing. This is illustrated with data from a ...
Population parameters of 'corvina' (Plagioscion squamosissimus) in the Barra Bonita Reservoir, Brazil
Type: Journal Article
Estimates for the growth parameters (L sub( infinity ) and K) mortality coefficients (Z,M and F) and exploitation rate (E) for the sciaenid Plagioscion squamosissimus are presented. The following results were obtained: 1) ...
Growth of juvenile Actinopyga mauritiana (Holothuroidea) in captivity
Type: Journal Article
In this study, we examined the growth of juvenile Actinopyga mauritiana in captivity at three levels of stocking biomass, and under two feeding regimes, for 12 months. We chose this species because of its availability on ...
Catch-effort relationship in Pacific bigeye tuna fishery
Type: Journal Article
Some problems associated with fitting surplus production models to unsuitable data are discussed. This is illustrated by an application of the Schaefer, Fox and PRODFIT models to Pacific Ocean bigeye tuna (Thunnus obesus ...