From April 1995 to April 1996, the annual reproductive cycle of male Eurasian perch Perca
fluviatilis was studied at the Lindre Center (Moselle, France). At monthly intervals, five males …

From April 1995 to April 1996, the annual reproductive cycle of the Eurasian perch Perca
fluviatilis was studied at the Fishfarming Lindre Center (Moselle, France). At monthly …

This study was designed to specify the testosterone (T), estradiol-17β (E 2) and 17, 20 β-
dihydroxy-4-pregnen-3-one (17, 20 β-P) variations during the pre-ovulatory period in female …

Abstract Changes in 17β-estradiol (E2), estrone (E1), testosterone (T), 11-ketotestosterone
(11KT), and 17, 20β-dihydroxy-4-pregnen-3-one (17, 20β-P) levels were correlated to …

Changes in gonadosomatic index (GSI), hepatosomatic index (HSI), gonad stage and
plasma concentrations of sex steroids were studied over one year in black bream …

Snapper, Pagrus auratus, were caught by baited hook from the Hauraki Gulf, northeast New
Zealand, from April (autumn) 1990 to January (summer) 1991. Fish were blood-sampled …

The relationship between plasma and ovarian levels of gonadal steroids was examined in
two New Zealand fish species with multiple spawning cycles of differing length. Snapper …

The profiles of testosterone (T) 11-ketotestosterone (11-KT), 17α-hydroxy-4-pregnen-3-one
(17-P), and 17α, 20β-dihydroxy-4-pregnen-3-one (17, 20β-P) were determined in groups of …

Males of the demoiselle Chromis dispilus (a species endemic to New Zealand) were hand-
netted from nest territories by scuba divers and blood sampled in situ. Reproductive …

This study was designed to determine the effects of the selection for body weight and of two
final warming durations during an out-of-season reproductive cycle on gonad …