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Some Observation on the Age, Growth, and Management of Trachinotus Teraia Cuvier, 1832 from Ebrié Lagoon System of Ivory Coast (West Africa)
- Soumaïla Sylla; Kouadio Justin Konan; Marie Anne D’Almeida; Boua Célestin Atse
- The aim of this study was to estimate the population parameters and exploitation level of Trachinotus teraia from Ebrié Lagoon (Ivory Coast). Monthly data of length composition for Trachinotus teraia were recorded between February 2004 and January 2006. ELEFAN in the software package FiSAT was used to analyse the length frequency data. A total of 1806 individuals ranging from 5.0 to 65.3 cm FL (Fork length), were examined.The von Bertalanffy growth constants were, asymptotic fork length (LF∞) = 58 cm, growth coefficient (K) = 0.43 year -1. The theoretical age at length zero (t0) and the growth performance index (φ’) calculated, gave respectively -0.32 year and 3.16. The growth males and females pattern showed positive allometric growth (b > 3), with an asymptotic weight (W∞) 4020.06 g and 4176.32 g, respectively. Trachinotus teraia attained 17.91 cm (LF) at the end of 1 year. Total mortality (Z) = 1.68 year-1, natural mortality (M) = 0.87 year-1, fishing mortality (F) = 0.81 year-1 and exploitation rate (E) = 0.48 respectively. The exploitation level (0.48) indicated that T. teraia stock was exploited at almost maximum yield in this lagoon.
- Select Volume / Issue:
- Year:
- 2015
- Type of Publication:
- Article
- Keywords:
- Exploitation Rate; Mortality Rates; Trachinotus Teraia; Von Bertalanffy Growth Constants
- Journal:
- IJAIR
- Volume:
- 3
- Number:
- 5
- Pages:
- 1419-1425
- Month:
- March
- ISSN:
- 2319-1473
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