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Morphological Characterization of Populations of Macrobrachium vollenhovenii and Macrobrachium macrobrachion from Badagry Creek, Southwest Nigeria |
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A.A. Jimoh,
E.O. Clarke,
O.O. Whenu,
M.A. Anetekhai and P.E. Ndimele |
Abstract:
Studies on the morphological characterization of the African river prawn, Macrobrachium vollenhovenii and the brackish water prawn, Macrobrachium macrobrachion from Badagry Creek in Southwest Nigeria were carried out. Samples of M. vollenhovenii (n = 275) and M. macrobrachion (n = 790) were collected from Badagry Creek. Morphometric analysis showed that M. vollenhovenii and M. macrobrachion exhibited positive allometric growth with “b” values of 3.11 and 2.58, respectively. M. vollenhovenii (6.29±3.48 g) was larger than M. macrobrachion (4.75±2.43 g). The males of both species were larger than the females. The correlation between Total Length (TL) and Body Weight (BW) was high and positive (M. vollenhovenii, r = 0.95; M. macrobrachion, r = 0.87). A significant (p<0.05) positive correlation occurred between TL and Carapace Length, (CL) (M. vollenhovenii, r = 0.83; M. macrobrachion, r = 0.66) and between TL and rostral length, RL (M. vollenhovenii, r = 0.73; M. macrobrachion, r = 0.79). Dorsally, M. vollenhovenii and M. macrobrachion had 6-14 (mean = 9.84±1.35) and 7-15 (mean = 9.38±0.84) rostral spines, respectively while on the ventral side of the rostrum, M. vollenhovenii had 3-8 spines (mean = 5.15±0.76) and M. macrobrachion had 3-10 spines (mean = 5.34±0.61). Female M. macrobrachion and M. vollenhovenii predominated with sex ratios of 1:3.73 (p<0.05) and 1:1.05 (p>0.05), respectively. There appears to be exploitation pressure on these prawns in Badagry Creek. Therefore, there is need for some management measures to be taken.
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How to cite this article:
A.A. Jimoh, E.O. Clarke, O.O. Whenu, M.A. Anetekhai and P.E. Ndimele, 2012. Morphological Characterization of Populations of Macrobrachium vollenhovenii and Macrobrachium macrobrachion from Badagry Creek, Southwest Nigeria. Asian Journal of Biological Sciences, 5: 126-137.
DOI: 10.3923/ajbs.2012.126.137
URL: https://scialert.net/abstract/?doi=ajbs.2012.126.137
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