Immunoreactive human growth hormone like peptides in tropical Penaeids and the effect of dietary hGH on Penaeus vannamei larval development

Human growth hormone like peptides were present in Penaeus indicus as two molecular forms: one with a molecular weight about 25 kDa which is similar to that of the vertebrate growth hormone and a smaller form of 2 kDa. Quantitative variations of hGH-like peptides in different larval stages of three...

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Veröffentlicht in:Aquatic living resources (Montrouge) 1991-04, Vol.4 (2), p.125-132
Hauptverfasser: Toullec, Jean-Yves, Le Moullac, Gilles, Cuzon, Gérard, Van Wormhoudt, Alain
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creator Toullec, Jean-Yves
Le Moullac, Gilles
Cuzon, Gérard
Van Wormhoudt, Alain
description Human growth hormone like peptides were present in Penaeus indicus as two molecular forms: one with a molecular weight about 25 kDa which is similar to that of the vertebrate growth hormone and a smaller form of 2 kDa. Quantitative variations of hGH-like peptides in different larval stages of three species of Penaeids (Penaeus vannamei, P. stylirostris, P. indicus) suggest a possible involvement of hGH-like peptides in the development. Human growth hormone (hGH) supplementation in the diet of Penaeus vannamei larvae seems to have a positive effect on the size and on the quality of the animals estimated by their resistance to salinity stress. Deux types de peptides apparentés à l'hormone de croissance humaine ont été mis en évidence chez Penaeus indicus : le premier a une masse moléculaire d'environ 25 kDa qui est comparable à celle de l'hormone de croissance de vertébré et le second est caractérisé par une masse moléculaire plus petite de l'ordre de 2 kDa. Les variations quantitatives des peptides apparentés à l'hormone de croissance de vertébré à différents stades larvaires de trois espèces de Pénéides (P. vannamei, P. stylirostri, P. indicus) suggèrent une possible implication de l'hormone de croissance apparentée dans le développement. L'addition d'hormone de croissance humaine dans le régime alimentaire de larves de Penaeus vannamei semble avoir un effet positif sur la taille et sur la qualité des animaux. Cette dernière est estimée au moyen d'un test de résistance à des chocs de salinité.
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source EDP Open; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Animal aquaculture
Animal productions
Biological and medical sciences
croissance
Crustacea
Fundamental and applied biological sciences. Psychology
growth
growth hormone
hormone de croissance
Invertebrate aquaculture
Marine
P. indicus
P. stylirostris
P. vannamei
Penaeids (P. vannamei
Pénéides
title Immunoreactive human growth hormone like peptides in tropical Penaeids and the effect of dietary hGH on Penaeus vannamei larval development
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