Brain aminergic systems in salmonids and other teleosts in relation to steroid feedback and gonadotropin release

Authors
Saligaut, C Linard, B Breton, B Anglade, I Bailhache, T Kah, O Jego, P
Citation
C. Saligaut et al., Brain aminergic systems in salmonids and other teleosts in relation to steroid feedback and gonadotropin release, AQUACULTURE, 177(1-4), 1999, pp. 13-20
Citations number
52
Categorie Soggetti
Aquatic Sciences
Journal title
AQUACULTURE
ISSN journal
00448486 → ACNP
Volume
177
Issue
1-4
Year of publication
1999
Pages
13 - 20
Database
ISI
SICI code
0044-8486(19990701)177:1-4<13:BASISA>2.0.ZU;2-0
Abstract
Two distinct gonadotropins, GtH I and GtH II have been evidenced in most of the teleost species, especially in salmonids. GtH II release is controlled by a dopaminergic inhibitory tone. An oestrogenic activation of a dopamine rgic preoptico-hypophysial pathway should be involved in the rainbow trout. GtH I release depends in salmonids upon a negative oestrogenic feedback, b ut a control by catecholamines is not evidenced. Some targets of sexual ste roids on catecholaminergic neurones in fish are evoked. (C) 1999 Elsevier S cience B.V. All rights reserved.