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Titolo:
Crustacean ecdysteriods in reproduction and embryogenesis
Autore:
Subramoniam, T;
Indirizzi:
Univ Madras, Unit Invertebrate Reprod, Dept Zool, Madras 600025, Tamil Nadu, India Univ Madras Madras Tamil Nadu India 600025 dras 600025, Tamil Nadu, India
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-PHARMACOLOGY TOXICOLOGY & ENDOCRINOLOGY
fascicolo: 2, volume: 125, anno: 2000,
pagine: 135 - 156
SICI:
1367-8280(200002)125:2<135:CEIRAE>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRESH-WATER PRAWN; PALAEMON-SERRATUS CRUSTACEA; LOCUSTA-MIGRATORIA INSECTA; CRAB Y-ORGANS; MACROBRACHIUM-ROSENBERGII; HOMARUS-AMERICANUS; METHYL FARNESOATE; TERRESTRIAL ISOPOD; CARCINUS-MAENAS; OVARIAN DEVELOPMENT;
Keywords:
ecdysteriods; Crustacea; reproduction; molting; embryogenesis; methyl farnesoate; vertebrate-type steroid hormones;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
118
Recensione:
Indirizzi per estratti:
Indirizzo: Subramoniam, T Univ Madras, Unit Invertebrate Reprod, Dept Zool, Guindy Campus, Madras 600025, Tamil Nadu, India Univ Madras Guindy Campus Madras Tamil Nadu India 600025 ia
Citazione:
T. Subramoniam, "Crustacean ecdysteriods in reproduction and embryogenesis", COMP BIOC C, 125(2), 2000, pp. 135-156

Abstract

Ecdysteroids are the molting hormones in Crustacea, as in other arthropods. They also subserve functions in the control of reproduction and embryogenesis. The available evidence indicate that the ecdysteroids are sequesteredinto the ovary by binding to yolk precursor proteins. Steroidogenic ability of the ovary is yet to be demonstrated in Crustacea. Despite several investigations, the role of ecdysteroids in oocyte maturation is not fully known. However, the embryonic ecdysteroids undergo significant fluctuation, correlated to specific developmental stages, including the secretion of embryonic envelopes and cuticle. Ecdysteroid metabolism in the eggs seems to be active throughout embryogenesis inasmuch as the free ecdysteroids are rapidly converted into conjugates, and vice versa; in addition to their inactivation into excretory ecdysteroidic acids. Eyestalk neuropeptides such as moltinhibiting hormones have a dominant role on the ecdysteroid synthesis by Y-organ, although recent evidence suggests a stimulatory role for yet another endocrine gland, the mandibular organ on Y-organ synthesis. (C) 2000 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/07/20 alle ore 21:13:59