MORPHOMETRIC PARAMETERS AND CONDITION FACTOR OF Tilapia zilli (PERCIFORMES: CICHLIDAE) OF THE MID CROSS RIVER FLOOD SYSTEM, SOUTH EASTERN NIGERIA
| Main Author: | Uneke Bilikis Iyabo |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2014
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/818539 |
Daftar Isi:
- The length-weight relationship (LWR) is an important factor in the biological study of fishes and their stock assessments while condition factor is an important component of performance, survivorship and reproductive success in fish, thus the morphometric parameters and condition factor of Tilapia zilli was studied between January 2010 and June 2011. The total length-standard length relationship (TL-SL) of T. zilli was expressed as log(Y) = -0.860 + 1.047 log(X). The length-weight relationship for the individuals ranging in size from 6.5 to 26.3cm TL was estimated. The overall logarithm form of equation obtained was log(Y) = -0.783 + 2.438 log(X). The value of co-efficient of correlation (r =0.971) estimated was high. The exponent (b) value indicated negative allometric growth. Condition factor values for the eighteen months of T. zilli samples ranged from 1.2 to 4.9 (mean 2.49 ± 0.66). Males had K values between 1.5 and 4.2 (mean 2.47 ± 0.77), while females had values between 1.2 and 4.9 (mean 2.46 ± 0.78). T. zilli was in good condition as K values were above 1.0.