- 期刊
- OpenAccess
The Length-Weight Relationships of Brackish Water/Marine Fish Species Assemblage in a Niger Delta Mangrove Creek, Nigeria
並列摘要
The fish species assemblage in a Niger Delta mangrove creek, Nigeria, of 25 species from 16 families comprising a total of 1163 individuals were determined for the parameters of length-weight relationships, from November, 2004 to June, 2006. The fish samples were collected from three stations at flood tides. The fishing gears used were hooks and lines, and cast net. The estimated values of the exponent (b) ranged between 0.97 (Epinephelus aeneus) and 5.67 (Dasyatis margarita). The mean value of 'b' for all the species was 3.16 (SD=0.093). Apart from b values of E. aeneus (0.97), L. goreensis (2.15), T. guineensis (4.25) and D. margarita (5.67) which were significantly different from 3, indicating allometric growth pattern, the other species had 'b' values not significantly different from 3, indicating isometric growth pattern. The regression coefficient (r) ranged from 0.22 for E. aeneus to 0.99 for T. lepturus. Except for E. aeneus, the r for the length-weight relationships of the fishes is high which indicate increase in length with increase in weight. Except for E. aeneus, L. agennes and D. margarita, analysis of variance (ANOVA) showed that there was highly significant regression (p＜0.001; 0.01; 0.05) of weight on length for the fish species. This study adds more information to the existing data on the management and culture of fish species in Buguma Creek which has the first Brackish Water Experimental Fish Farm in Nigeria.
延伸閱讀
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