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|Title: ||Fecundity, Gonadosomatic Index and breeding cycle of the Clupeid Ilisha Africana (Bloch) occurring in the coastal waters of Cape Coast (Ghana)|
|Authors: ||Azumah, E.G.S.|
|Issue Date: ||7-Sep-1991|
|Abstract: ||The fecundity of Ilisha Africana ranged from 1,013
to 10,600 (mean, 3,985) for fish measuring 13.4 cm
to 193cm total length with body weights 17.1g to
64.8g and gonad weight of 033g to 2.21g.
The gonadosomastic index (GSI) was higher in the
female than in the males. This was attributed to
yolk and fat probably needed for nourishment in the
developing eggs. The GSI was also found generally
to increase with the stage of maturity of the fish.
Information based on the ripe and ripe running stages of both males and females, the gonad weight, the condition factor, and oocyte diameter indicates that Ilisha afrisana breeds probably throughout the year, spawns more than once during a breeding season and that, possibly, the peak spawning periods are June-July, November and March.
Key words: Fecundity, gonadosomatic index, gonad, oocyte, condition factor, Ilisha. africana|
|Description: ||This article was published by the Journal of the University of Science and Technology, Kumasi, vol. 11, No. 3, 3 Oct, 1991|
|Appears in Collections:||College of Science|
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