Table 1
Growth parameters (L∞ = Asymptotic length, to = Theoretical age at length zero, tmax = Longevity, Φ ′ = Growth performance index, and K= Growth coefficient), mortality estimates (Z = Total mortality, M = Natural mortality, and F = Fishing mortality), and exploitation rates (E) from different fishing areas in West Africa, including the estimates of the present study.
| Country | Locality | L∞ (cm) | K (y−1) | to (y) | tmax (y) | Φ ′ | M (y−1) | M/K | Z (y−1) | F (y−1) | E(y−1) | References |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nigeria | Lagos lagoon | 33.1 | 0.159 | – | – | 2.24 | – | – | – | – | – | Fagade (1974) |
| Senegal | Sine-Saloum estuary | 22 | 0.6 | – | – | – | 1.081 | – | – | 1.135 | – | Villanueva (2004) |
| Ivory Cosat | Ebrié Lagoon | 34 | 0.42 | – | – | – | 0.976 | – | – | 0.224 | – | Villanueva (2004) |
| Gambia | Gambia estuary | 37 | 0.39 | – | – | – | 0.893 | – | – | 0.847 | – | Villanueva (2004) |
| Benin | Lake Nokoué (outside acadjas) | 24.1 | 0.55 | 0.5 | 5.5 | 2.5 | 1.28 | 2.33 | 1.66 | 0.38 | 0.23 | Niyonkuru (2007) |
| Benin | Lake Nokoué (in acadjas) | 26.7 | 0.79 | 0.68 | 3.8 | 2.75 | 1.58 | 2 | 2.41 | 0.83 | 0.34 | Niyonkuru (2007) |
| Benin | Lake Ahémé | 22.5 | 0.52 | -0.46 | 5.7 | 2.42 | 1.26 | 2.42 | 2.1 | 0.85 | 0.4 | Niyonkuru (2007) |
| Benin | Lake Nokoué | 27 | 0.8 | -0.21 | 3.8 | 2.73 | 1.5 | 1.87 | 2.3 | 0.7 | 0.32 | Niyonkuru et al. (2007) |
| Ivory Cosat | Lake Ayamé I | 31 | 0.39 | – | – | 2.57 | – | – | – | – | – | Tah et al. (2010) |
| Benin | Lake Toho | 21.53 | 0.58 | -0.31 | 5.17 | 2.43 | 1.37 | 2.36 | 1.95 | 0.58 | 0.3 | Lederoun et al. (2015) |
| Benin | Lake Nokoué and Porto-Novo Lagoon | 24.68 | 0.86 | -0.2 | 3.49 | 2.42 | 1.71 | 1.98 | 2.46 | 0.75 | 0.31 | Present study |
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