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Inhibitory effect of 11‐ketoandrostenedione and androstenedione on spermatogenesis in the three‐spined stickleback, Gasterosteus aculeatus L.
Author(s) -
Andersson E.,
Mayer I.,
Borg B.
Publication year - 1988
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.1095-8649.1988.tb05530.x
Subject(s) - gasterosteus , stickleback , biology , three spined stickleback , androstenedione , spermatogenesis , seasonal breeder , zoology , ecology , medicine , endocrinology , fish <actinopterygii> , androgen , fishery , hormone
Stickleback males were implanted with Silastic capsules filled with 11‐ketoandrostenedione or androstenedione at the end of the breeding season. 11‐Ketoandrostenedione prevented the natural decline in secondary sexual characters and testes weight. It also completely inhibited the commencement of spermatogenesis, which normally takes place in late summer after having been quiescent during the breeding season. Androstenedione also exerted these effects, but to a lesser degree.