Physiological evidence for two sturgeon gonadotrophins in Acipenser transmontanus
Identifieur interne : 001B95 ( Main/Merge ); précédent : 001B94; suivant : 001B96Physiological evidence for two sturgeon gonadotrophins in Acipenser transmontanus
Auteurs : G. P. Moberg [États-Unis] ; J. G. Watson ; S. Doroshov ; H. Papkoff ; R. J. Pavlick JrSource :
- Aquaculture [ 0044-8486 ] ; 1995.
Descripteurs français
- Pascal (Inist)
English descriptors
Abstract
Copyright (c) 1996 Elsevier Science B.V. All rights reserved. Physiological evidence in white sturgeon Acipenser transmontanus suggests that two gonadotrophins, termed sturgeon gonadotropin I (stGTH I) and sturgeon gonadotropin II (stGTH II), are involved in regulating reproduction. Pituitary and plasma concentrations of stGTH I were found to be higher than concentrations of stGTH II during vitellogenesis and the early stages of spermatogenesis. Conversely, pituitary and plasma concentrations of stGTH II were greater compared with stGTH I during ovulation and spermiation. The gonadotropin releasing hormone analog D-Ala6-des-Gly10-GnRH ethylamide (GnRHa) was effective in stimulating the release of both gonadotrophins in mature males and pre-ovulatory females, with a maximal response occurring in the spring. Collectively, the data supports our view that sturgeon possess a dual gonadotropin system controlling reproduction.
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Pascal:96-0076034Le document en format XML
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<author><name sortKey="Doroshov, S" sort="Doroshov, S" uniqKey="Doroshov S" first="S." last="Doroshov">S. Doroshov</name>
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<author><name sortKey="Papkoff, H" sort="Papkoff, H" uniqKey="Papkoff H" first="H." last="Papkoff">H. Papkoff</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Physiological evidence for two sturgeon gonadotrophins in Acipenser transmontanus</title>
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<term>Gonadotropin</term>
<term>Gonadotropin RH</term>
<term>Reproduction</term>
<term>Sex steroid hormone</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Gonadotrophine</term>
<term>Gonadotrophine RH</term>
<term>Hormone stéroïde sexuelle</term>
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<front><div type="abstract" xml:lang="en">Copyright (c) 1996 Elsevier Science B.V. All rights reserved. Physiological evidence in white sturgeon Acipenser transmontanus suggests that two gonadotrophins, termed sturgeon gonadotropin I (stGTH I) and sturgeon gonadotropin II (stGTH II), are involved in regulating reproduction. Pituitary and plasma concentrations of stGTH I were found to be higher than concentrations of stGTH II during vitellogenesis and the early stages of spermatogenesis. Conversely, pituitary and plasma concentrations of stGTH II were greater compared with stGTH I during ovulation and spermiation. The gonadotropin releasing hormone analog D-Ala<sup>6</sup>
-des-Gly<sup>10</sup>
-GnRH ethylamide (GnRHa) was effective in stimulating the release of both gonadotrophins in mature males and pre-ovulatory females, with a maximal response occurring in the spring. Collectively, the data supports our view that sturgeon possess a dual gonadotropin system controlling reproduction.</div>
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<country name="États-Unis"><region name="Californie"><name sortKey="Moberg, G P" sort="Moberg, G P" uniqKey="Moberg G" first="G. P." last="Moberg">G. P. Moberg</name>
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