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The reproductive style of Diplodus capensis (Sparidae) in southern Angola: rudimentary hermaphroditism or partial protandry?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TJ Richardson --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, PO Box 94, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, PO Box 94, South AfricaThe reproductive style of Diplodus capensis was examined in an unexploited coastal area in southern Angola. The mean length of females was significantly greater than that of males and, although not significant, females dominated the older age classes. The overall... -
Gonad development in the freshwater oyster Etheria elliptica (Bivalvia: Etheriidae) in northern Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Ampofo-Yeboah --- Department of Renewable Natural Resources, M Owusu-Frimpong --- Department of Applied Biology, K Yankson --- School of Biological Sciences,Gonad development in the freshwater oyster Etheria elliptica from the White Volta River at Nawuni and the Oti River at Sabari (northern Ghana) was studied by histological examination from March to July 1999. Five developmental stages—developing, ripening, ripened, spawning and... -
Diagnosing the sexual pattern of Diplodus cervinus hottentotus (Pisces: Sparidae) from southern Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa CV Santos --- Faculdade Ciências da Universidade Agostinho Neto (FCUAN), Angola WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe sexual pattern of Diplodus cervinus hottentotus was investigated in southern Angola. Females were significantly smaller and found in greater numbers, with an adult sex ratio of 1.0:0.7, F:M. Histological observations of preserved gonads indicated that the species is a...