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Abstract
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Article Information:
The Recruitment Pattern of Macrobrachium macrobrachion (Herklots, 1851) from Luubara Creek, Ogoni Land, Niger Delta, Nigeria
S.N. Deekae and J.F.N. Abowei
Corresponding Author: Abowei Jasper
Submitted: 2010 July, 01
Accepted: 2010 August, 02
Published: 2010 September, 10 |
Abstract:
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The recruitment pattern of Macrobrachium macrobrachion from Luubara creek in Ogoni land area
of Niger Delta region in Nigeria was studied for a period of twelve calendar months (January – December,
2007). The recruitment pattern of M. macrobrachion showed that there were two peaks per year (a major one
in March w hile the secondary one w as in August). How ever, there is a year round recruitment with the highest
recruitment in March (16.16%) while the lowest recruitment was in O ctober (0.42% ). The grow th parameters
obtained for the recruited shrimps were L∞ = 88.01, K = 0.58, C = 0.05, WP = 0 and t0 = 0. C indicates the
amplitude of seasonal growth oscillations (that is, the magnitude of the growth patterns) and has values ranging
from 0 to 1. WP (winter point) indicates the time of the year during which growth is minimal for temperate
species but may not be applicable for tropical species. Juveniles and females were observed in the creek
throughout the study period. Ovigerous females were also observed in the creek throughout the study period.
There were more females than males in the population and probably this allowed for continuous replacement.
Key words: Luubara Creek, Macrobrachium macrobrachion, Niger Delta, Nigeria, Ogoni Land, recruitment pattern,
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Cite this Reference:
S.N. Deekae and J.F.N. Abowei, . The Recruitment Pattern of Macrobrachium macrobrachion (Herklots, 1851) from Luubara Creek, Ogoni Land, Niger Delta, Nigeria. Research Journal of Applied Sciences, Engineering and Technology, (6): Page No: 568-573.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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