Article Sidebar
Article Details
Submission of a paper for publication implies the transfer of the copyright from the author(s) to the publisher upon acceptance. International Formulae Group is therefore the copyright holder after publication of an article in International Journal of Biological and Chemical Sciences, and published articles should not be used for commercial purpose without the written consent of the Editor-in-Chief. They are licensed under a Creative Commons Attribution-Non Commercial-Share Alike 4.0 International License.
Main Article Content
Population growth of three freshwater prawns (<i>Macrobrachium</i> spp.) in Lower Ogun River, Southwest Nigeria
Abstract
Growth parameters of the populations of three freshwater prawns: Macrobrachium vollenhovenii, M. macrobrachion and M. felicinum in the Lower Ogun River were determined. For each population, lengthfrequency data for twenty-four month period (January 2006-December 2007) were analysed to determine the growth parameters, using routines in FAO-ICLARM Stock Assessment Tools (FISAT II). Estimates from FISAT indicated steady growth of the three populations. M. vollenhovenii had mean maximum length (Lmax), asymptotic length (L∞), performance index (ø’) and growth coefficient (K) of 187.00 mm ± 5.66, 215.10 mm ± 16.27, 3.98 ± 0.04 and 0.2 ± 0.04 respectively. Mean values for Lmax, L∞, ø’ and K for M. macrobrachion were 86.00 mm ± 1.00, 100.26 mm ± 12.20, 0.59 ± 0.16 and 3.76 ± 0.01 respectively, while 76.45 ± 3.25, 69.00 mm ± 1.00, 1.33 ± 0.67 and 3.87 ± 0.19 were the respective mean values of the growth parameters for M. felicinum. The suitability of the Macrobrachium species for aquaculture based on the estimated growth parameters is discussed.
Keywords: Lower Ogun River, Asymptotic length, Maximum length, Growth performance index, Growth coefficient
