Age and growth of Heterotis niloticus around Pategi in the middle River Niger, Kwara State

Adekeye, A.O. (1993) Age and growth of Heterotis niloticus around Pategi in the middle River Niger, Kwara State. In: 10th Annual Conference of the Fisheries Society of Nigeria (FISON) , 16-20 November 1992 ,Abeokuta, Nigeria, pp. 152-158.

[img]
Preview
PDF (The document's language is English .) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (564Kb) | Preview

Abstract

Biological studies of Heterotis niloticus were conducted for three years in the middle River Niger. Scales were found to be the most suitable structure in ageing Heterotis which was validated by length/histogram curve. Annual rings were found to be formed between March to June. Growth was rapid in the first two years and they reached sexual maturity at 2 years. The male grow longer while the female are bulkier. The length-weight relationship of male and female Heterotis did not differ significantly and the resulting equation for male was W = 1.25L super(2.5) and W = 1.6L super(2.7) for females respectively where W = weight (g) and L = total length. The total length to body scale relationship was found to be L = 14.3R super(2.6) where (R = oral radius of scale Heterotis growth was found to be allometric

Item Type: Conference or Workshop Item
Title: Age and growth of Heterotis niloticus around Pategi in the middle River Niger, Kwara State
Personal Creator/Author:
CreatorsEmail
Adekeye, A.O.
Page Range: pp. 152-158
Date: 1993
Event Title: 10th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Abeokuta, Nigeria
Event Dates: 16-20 November 1992
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria, River Niger; age; growth; length-weight relationships; Heterotis niloticus
Subjects: Aquaculture
Biology
Item ID: 3504
Depositing User: Ms Maria Kalentsits
Date Deposited: 05 Jun 2010 06:54
Last Modified: 29 Sep 2011 17:16
Related URLs:
URI: http://aquaticcommons.org/id/eprint/3504

Actions (login required)

View Item View Item

Document Downloads

More statistics for this item...