The status of fish stocks in Lake Victoria: a research prospective and way forward
The status of fish stocks in a water body at any one time is a function of several factors affecting the quantity of fish in that water body. These include:a) Total number (abundance) and biomass (weight) present,b) Growth (size and age),c) Recruitment (the quantity offish entering the fishery) including reproduction,d) Mortality which is caused by fishing or natural causes.Other indirect factors of major importance to the status of the stocks include productionfactors (water quality and availability of natural food for fish), the life history parameters ofthe different species making up the stocks (e.g. sex ratios, condition of the fish, reproductivepotential (i.e. fecundity) etc). Changes in fish stocks do occur when any of the above listedfactors directly influence aspects of growth, reproduction and mortality and therefore,numbers and standing stock (biomass).
| Main Authors: | , |
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| Format: | monograph biblioteca |
| Language: | English |
| Published: |
Fisheries Resources Research Institute
2004-07
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| Subjects: | Fisheries, |
| Online Access: | http://hdl.handle.net/1834/32901 |
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