The effects of reserpine and LHRH or salmon GnRH analogues on gonadotropin release, ovulation and spermiation in common carp (Cyprinus carpio L.)
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منابع مشابه
The effects of reserpine and LHRH or salmon GnRH analogues on gonadotropin release, ovulation and spermiation in common carp (Cyprinus carpio L.).
The effects of reserpine (catecholamine depletor) and LHRH analogues on gonadotropin secretion, spermiation and ovulation of common carp were investigated. Injections of reserpine alone at a dose of 1 or 7 mg/kg of body weight stimulated spermiation, and reserpine at a dose of 1 mg/kg of body weight in combination with (D-Arg6, Trp7, Leu8, Pro9, NEt)-LHRH (s-GnRH-A) or with (D-Ala6, Pro9)-LHRH ...
متن کاملCalcium ions as a mediator in GnRH action on gonadotropin release in the common carp (Cyprinus carpio L).
Collagenase-dispersed carp pituitary cells in a perifusion system were used to study the role of calcium ions in the mechanism of GnRH action on the release of maturational gonadotropin (GtH) in fish. The specific calcium chelator EGTA and the calcium antagonist manganese (Mn2+) caused a 40% inhibition in the basal GtH release and completely blocked GnRH-stimulated GtH release. Short-term appli...
متن کاملThe reserpine effects on the gonadotrophic cells of the male common carp Cyprinus carpio (Osteichtyes: Cyprinidae).
The secretion of gonadotropins (GtH) in goldfish and carp, is stimulated by GtH-releasing hormone (GnRH) and is inhibited by dopamine. Studies with antidopaminergics have demonstrated to be effective in order to stimulate the spermiation and the ovulation in different species of teleosts. The reserpine, a drug that deplets the dopamine, has shown to stimulate the spermiation in the common carp....
متن کاملCommon Carp, Cyprinus carpio
The common carp (Cyprinus carpio) belongs to the family Cyprinidae. In nature, carp live in the middle or lower reaches of a river with slow currents, or in marshes. Their habitats are usually weedy areas with a muddy bottom. Carp fry feed on zooplankton such as rotifers and copepods, but as they grow up they become benthic feeders, feeding on animals and other organic material. The cyprinids h...
متن کاملCommon carp - Cyprinus carpio
Distribution ! e common carp [Cyprinus carpio Linnaeus (1758)] has been one of the oldest domesticated species of fi sh for food. Culture of carp in China dates back to at least the 5th century BC, although domestication began much later. ! e European races of carp derived from wild carp of the Danube; the earliest attempts date back to the Roman Empire and spread of Christianity in Europe, fro...
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ژورنال
عنوان ژورنال: Reproduction Nutrition Développement
سال: 1988
ISSN: 0181-1916
DOI: 10.1051/rnd:19880602