Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Occurrence of vertebrate steroids, estradiol 17 beta and progesterone in the reproducing females of the mud crab Scylla serrata
Autore:
Warrier, SR; Tirumalai, R; Subramoniam, T;
Indirizzi:
Univ Madras, Dept Zool, Unit Invertebrate Reprod, Madras 600025, Tamil Nadu, India Univ Madras Madras Tamil Nadu India 600025 dras 600025, Tamil Nadu, India
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR AND INTEGRATIVE PHYSIOLOGY
fascicolo: 2, volume: 130, anno: 2001,
pagine: 283 - 294
SICI:
1095-6433(200109)130:2<283:OOVSE1>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRESH-WATER PRAWN; MACROBRACHIUM-ROSENBERGII; YOLK PROTEINS; LIPOPROTEIN-LIPASE; OVARIAN MATURATION; VITELLOGENIN GENES; ESTROGEN-RECEPTOR; EMERITA-ASIATICA; PENAEUS-MONODON; THYROID-HORMONE;
Keywords:
vitellogenin; lipovitellin; estradiol 17 beta; progesterone; crustacea; reproduction; vitellogenesis; hepatopancreas; ovary; Emerita asiatica; embryonic stages;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Subramoniam, T Univ Madras, Dept Zool, Unit Invertebrate Reprod, Guindy Campus, Madras 600025, Tamil Nadu, India Univ Madras Guindy Campus Madras Tamil Nadu India 600025 ia
Citazione:
S.R. Warrier et al., "Occurrence of vertebrate steroids, estradiol 17 beta and progesterone in the reproducing females of the mud crab Scylla serrata", COMP BIOC A, 130(2), 2001, pp. 283-294

Abstract

In crustaceans, vitellogenesis is known to be controlled by eyestalk neuropeptides, biogenic amines, ecdysteroids and a juvenile hormone-like compound, methyl farnesoate. In recent years, the occurrence of vertebrate steroidhormones, estradiol 17 beta (E-2) and progesterone (PG) has also been reported in a few decapods, although their precise role in female reproduction is yet to be determined. The levels of E-2 and PG in the ovary, hepatopancreas and the hemolymph of the red mud crab, Scylla serrata were analyzed in different vitellogenic stages in order to establish a correlation between hormone profile and stages of vitellogenesis. It was observed that the levels of both the steroids increased steeply in the tissues at the onset of vitellogenesis (vitellogenic stage I). Maximum levels of estradiol were present in the hepatopancreas whereas the highest concentration of progesterone was seen in the ovary, suggesting dichotomous roles for these hormones in vitellogenesis. Furthermore, levels of these hormones were estimated in different embryonic stages of the eggs of the sand crab Emerita asiatica and mudcrab S. serrata. Their levels fluctuated, following a definite pattern in the different stages, suggesting a possible functional role as morphogenetic hormones. This study, in addition, also reports the presence of E-2 and PG on lipovitellin purified from ovary and eggs as well as vitellogenin purified from the hemolymph implicating a role for these lipoproteins as steroid carriers. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/06/20 alle ore 23:09:39