Length-weight relationships and relative condition factor of twenty important marine fish species off Lagos coast, Nigeria
A study was conducted on the length-weight relationship and condition factor (k) of 6,254 fish samples representing 20 species belonging to 11 families of important marine fishes off Lagos coast, Nigeria. They were collected with a trawl net (cod-end 20mm mesh size), trawled at different depth ranging from 10m-100m between May and June 2009. The estimated 'b' value (regression coefficient) of the equation W = aLb ranged between 2.29 and 3.46 with mean and mode values of 2.78 ~c 0.28 and 2.79 respectively while the 'a' value (regression constant) ranged between -2.6019 and -0.9023 with mean value of -1.6899 ~c 0.40. The condition factor (k) ranged between 0.52 and 11.89 with mean values of 2.71 ~c 2.64. Fish species of Nigeria coastal water are dominated by Pseudotolithus senegalensis which is about 13.4% of the total fish samples and their growth trend is mostly isometric (exhibit dimensional equality of the body parameters). All the species studied are in good condition (k> 0.5).
| Main Authors: | , |
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| Format: | conference_item biblioteca |
| Language: | English |
| Published: |
FISON
2012
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| Subjects: | Ecology, Fisheries, Pseudotolithus senegalensis, ASE, Nigeria, Lagos Lagoon, Lenght-weight relationship, Condition factor, Marine fish species, Trawl, Isometric, freshwater environment, Length-weight relationships, Marine fish, Trawl nets, Coastal waters, Fishery surveys, Marine fisheries, Check lists, Population structure, Dominant species, |
| Online Access: | http://hdl.handle.net/1834/38893 |
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