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Growth parameters and total mortality in Oreochromis niloticus (Linnaeus) from Nyanza Gulf, Lake Victoria

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Abstract

Length-frequency data collected from fish landings in the Kenya waters of Lake Victoria were used to estimate the growth parameters, total mortality rate and growth performance index in Oreochromis niloticus. The asymptotic length, (L ∞) and the ratio of the total mortality rate (Z) to the growth constant (K), were estimated to be 64.6 cm and 3.219 respectively. K was 0.254 y-1, Z was 0.818 y-1 and the growth performance index θ′ = Log10 K + 2 log10 L∞ = 3.025, which is rather high as compared to other tilapia populations in natural waters.

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Author notes

  1. Albert Getabu

    Present address: Kegati Aquaculture Research Station, P.O. Box 3259, Kisii, Kenya

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  1. Kenya Marine and Fisheries Research Institute, P.O. Box 1881, Kisumu, Kenya

    Albert Getabu

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  1. Albert Getabu
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Getabu, A. Growth parameters and total mortality in Oreochromis niloticus (Linnaeus) from Nyanza Gulf, Lake Victoria. Hydrobiologia 232, 91–97 (1992). https://doi.org/10.1007/BF00014617

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