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International Journal of Fisheries and Aquatic Studies
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(ICV-Poland) Impact Value: 76.37, Impact Factor: RJIF 5.69
E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 4, Part C

Seasonal variation in the proximate composition of size groups of Nematopalaemon hastatus in Okoro River estuary, southeast Nigeria and the influence of environmental factors


Author(s): John E Ukpatu and James P Udoh

Abstract: The study investigated the influence of environmental factors in the proximate composition of Nematopalaemon hastatus shrimp in Okoro River estuary, Nigeria. The studied shrimp were 48.24% rich in crude protein; their proximate compositions being significantly affected by size, temporal and seasonal variations. Crude fibre and lipid contents decreased, while crude protein attained maximal level in the rainy season (P<0.05), peaking in April. Ash and lipid contents increased with size (P<0.05), while protein content was higher in younger than in adult shrimps (P< 0.05). Salinity, temperature and rainfall were the key environmental factors that exert significant (P>0.05) influence on shrimp properties. Temperature and salinity promote (P < 0.05) dry matter excluding moisture, lipid and crude fibre; rainfall promotes (P < 0.05) lipids, ash and carbohydrate contents excluding crude protein; and digestible carbohydrates showed positive affinity with moisture content, dry matter and protein. The interrelationships and pathways were summarized in a dendogram and general implications established.

Pages: 210-216  |  446 Views  9 Downloads

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How to cite this article:
John E Ukpatu and James P Udoh. Seasonal variation in the proximate composition of size groups of Nematopalaemon hastatus in Okoro River estuary, southeast Nigeria and the influence of environmental factors. International Journal of Fisheries and Aquatic Studies. 2017; 5(4): 210-216.
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