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Induced sex change in black sea bass
Author(s) -
Benton C. B.,
Berlinsky D. L.
Publication year - 2006
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.1095-8649.2006.01212.x
Subject(s) - biology , sex change , bass (fish) , sex reversal , sea bass , sex ratio , black sea , fishery , fish <actinopterygii> , population , demography , oceanography , biochemistry , gene , sociology , geology
Experiments were conducted to identify factors involved in sex change in the protogynous black sea bass Centropristis striata . Black sea bass maintained in the ratio of 8 females (F):0 males (M) for 9 months reversed sex while those kept at the ratios of 6F:2M or 4F:4M did not. Female black sea bass implanted with 1·0 mg 11‐ketotestosterone (11‐KT) or 10 mg fadrozole (FAD) changed sex and began spermiating while those implanted with 0·1 mg 11‐KT or 1·0 mg FAD underwent incomplete sex reversal. One fish implanted with 1·0 mg FAD initiated sex change but was not spermiating at the end of the study. One fish in the control group, the largest fish in the study, initiated sex change. These results suggest that the presence of males may restrict sex reversal in black sea bass and that high 17β‐oestradiol:11‐KT is required for maintaining ovarian function.