Some Growth Parameters of ＂Macrobrachium mcrobrachion＂ (herklots, 1851) from Luubara Creek in Ogoni Land, Niger Delta, Nigeria.

S.N. Deekae ； J.F.N. Abowei

《Research Journal of Applied Sciences, Engineering and Technology》 Volume 2 Issue 6 (2010/09) Pp. 558-567

Parallel abstracts

Some Growth parameters of ＂Macrobrachium mcrobrachion＂ from Luubara Creek in Ogoni Land, Niger Delta, Nigeria was studied for a period of two years (January, 2006-December, 2007). The parameters were evaluated using different applications in the FiSAT package such as the Powell-Wetheral plot; the ELEFAN 1 Scan, and the Non-Seasonalized Version of the Von Bertalanffy growth function (VBGF) to ensure accuracy. Powell-wetheral plot gave estimates of L∞ as 81.53 mm TL), K was 2.06 per year, Z/K was 1.07 while the growth performance index, Φwas 4.01. The growth parameter obtained from the ELEFAN 1 Scan were L∞=83.36 mm; K=2.25 per year; Φ=4.02 and Rn=0.13. The grow th parameters obtained for the non-Seasonalized Version of Von Bertanlanffy growth function (VBGF) were L∞=34.61 mm; K=0.28 per year; =0.26 w hile the growth performance index was 2.5.1. The results from the length-at-age data showed that L∞=40 mm K=0. 38 per year and t_0=-0.71. The overall estimates are L∞=82.65 mm; r=0.95; K=1.98 per year; t_0=0.48; z/k=1.07; Φ=3.9 and Rn=0.14 gave estimates of L∞ as 81.53 mm TL), K was 2.06 per year, Z/K was 1.07 while the growth performance index, Φ was 4.01. The growth parameter obtained from the ELEFAN 1 Scan were L∞=83.36mm; K=2.25 per year; Φ=4.02 and Rn=0.13. The growth parameters obtained for the non-Seasonalized Version of Von Bertanlanffy growth function (VBGF) were L∞=34.61 mm; K=0.28 per year; =0.26 while the growth performance index was 2.5.1. The results from the length-at-age data showed that L∞=40 mm K=0. 38 per year and t_0=-0.71. The overall estimates are are L∞=82.65 mm; r=0.95; K=1.98 per year; t_0=0.48; z/k=1.07; Φ=3.9 and Rn=0.14. For 2006 the mean predicted extreme length was 81.63 mm while 2007 it was 83.33 mm. The overall predicted mean extreme length for M. macrobrachion in Luubara creek was 82.48 mm (TL) while the mean observed extreme length was 81.37 mm. The probability of having this length is put at 95% and the condition i.e., interval is between is 76.63-93.51%. The observed total lengths had a mean of 79.5 mm in 2006 and mean of 83.25 mm in 2007.

Parallel keywords

Growth parameters ； Luubara Creek ； Macrobrachium mcrobrachion ； Niger Delta ； Nigeria ； Ogoni Land