Aspects of the reproductive biology of Mugil cephalus (Linnaeus, 1857) in Bonny Estuary

Sikoki, F.D. and Hart, S.A. and Hart, A.I. and Adeleye-Wokoma, I.P. (2001) Aspects of the reproductive biology of Mugil cephalus (Linnaeus, 1857) in Bonny Estuary. In: 14th Annual Conference of the Fisheries Society of Nigeria (FISON) , 19-23 January 1998 ,Ibadan, Nigeria, pp. 82-88.

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Abstract

Aspects of the reproductive biology of Mugil cephalus in the Bonny estuary (Nigeria) were studied between January and December 1996. Males were observed to be more slender than females while the females have deeper bodies. The male:female ratio (1:0:95) was not significantly different. The minimum size at maturity was 16.6cm (0.5 yr). Fish matured at 24.3cm TL(1.76 yr) with median maturity size of 19.5cm TL(0.71 yr). Median maturity for male and female fish were 16.4cm TL(0.41 yr) and 18.2cm TL(0.60 yr) respectively. Breeding occurred once a year between September and December, from late rainy season to early dry season. Mean absolute fecundity was 1,403, 808 eggs (range 107, 729-4,445, 423 eggs) for fish of 17.0.29.5cm TL (mean 22.5cm TL). Fecundity correlated positively with fish total weight, length, ovary weight and age

Item Type: Conference or Workshop Item
Title: Aspects of the reproductive biology of Mugil cephalus (Linnaeus, 1857) in Bonny Estuary
Personal Creator/Author:
CreatorsEmail
Sikoki, F.D.
Hart, S.A.
Hart, A.I.
Adeleye-Wokoma, I.P.
Page Range: pp. 82-88
Date: 2001
Event Title: 14th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Ibadan, Nigeria
Event Dates: 19-23 January 1998
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria, Rivers, Bonny Estuary; brackishwater environment; estuarine organisms; fecundity; reproductive cycle; sex ratio; sexual maturity; Mugil cephalus
Subjects: Fisheries
Biology
Item ID: 3662
Depositing User: Ms Maria Kalentsits
Date Deposited: 11 Jul 2010 09:46
Last Modified: 29 Sep 2011 17:00
URI: http://aquaticcommons.org/id/eprint/3662

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