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Observations on the reproductive biology of the shad, Ethmalosa fimbriata (Bowdich), in the coastal waters of Cape Coast, Ghana
Author(s) -
Blay J.,
Eyeson K. N.
Publication year - 1982
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1982.tb02854.x
Subject(s) - gonadosomatic index , biology , fecundity , reproductive biology , cape , fishery , sexual maturity , reproduction , zoology , ecology , population , embryo , history , demography , archaeology , sociology , embryogenesis
The gonads of Ethmalosa fimbriata have been classified according to five and four maturity stages in the male and female, respectively. The species appears to mature at 22.0 cm in Ghana waters. The fecundity and frequency distribution of oocytes have been determined. Monthly changes in the proportions of gonadal stages and gonadosomatic index indicate that the species spawns in the sea from October to March. The results have been compared with data on populations occurring in other West African countries.