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Abstract
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Article Information:
Some Growth Parameters of Macrobrachium mcrobrachion (herklots, 1851) from Luubara Creek in Ogoni Land, Niger Delta, Nigeria
S.N. Deekae and J.F.N. Abowei
Corresponding Author: Abowei Jasper
Submitted: 2010 June, 29
Accepted: 2010 August, 02
Published: 2010 September, 10 |
Abstract:
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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, Φ was 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 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 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 t0 = -0.71. The overall estimates are L∞ = 82.65 mm; r = 0.95; K = 1.98
per year; t0 = 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∞ = 83.36 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 while the growth performance index was 2.5.1. The results from the length - at - age
data show ed that L∞ = 40 mm K = 0. 38 per year and t0 = -0.71. The overall estimates are are L∞ = 82.65 mm;
r = 0.95; K = 1.98 per year; t0 = 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 m m in 2006 and mean of 83.25 mm in 2007.
Key words: Growth parameters, Luubara Creek, Macrobrachium mcrobrachion, Niger Delta, Nigeria, Ogoni Land,
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Cite this Reference:
S.N. Deekae and J.F.N. Abowei, . Some Growth Parameters of Macrobrachium mcrobrachion (herklots, 1851) from Luubara Creek in Ogoni Land, Niger Delta, Nigeria. Research Journal of Applied Sciences, Engineering and Technology, (6): Page No: 558-567.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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