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Titolo:
Effect of steroids on gonadal growth and gametogenesis in the juvenile redsea urchin Pseudocentrotus depressus
Autore:
Unuma, T; Yamamoto, T; Akiyama, T;
Indirizzi:
Natl Res Inst Aquaculture, Nansei, Mie 5160193, Japan Natl Res Inst Aquaculture Nansei Mie Japan 5160193 ei, Mie 5160193, Japan Natl Res Inst Aquaculture, Inland Sect, Tamaki, Mie 5190423, Japan Natl Res Inst Aquaculture Tamaki Mie Japan 5190423 ki, Mie 5190423, Japan Natl Res Inst Fisheries Sci, Yokohama, Kanagawa 2368648, Japan Natl Res Inst Fisheries Sci Yokohama Kanagawa Japan 2368648 368648, Japan
Titolo Testata:
BIOLOGICAL BULLETIN
fascicolo: 2, volume: 196, anno: 1999,
pagine: 199 - 204
SICI:
0006-3185(199904)196:2<199:EOSOGG>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
STAR ASTERIAS-RUBENS; SCLERASTERIAS-MOLLIS ECHINODERMATA; PYLORIC CECA; REPRODUCTIVE-CYCLE; INVITRO BIOSYNTHESIS; ESTRONE LEVELS; OVARIES; METABOLISM; PROGESTERONE; ASTEROIDEA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Unuma, T Natl Res Inst Aquaculture, Nansei, Mie 5160193, Japan Natl Res Inst Aquaculture Nansei Mie Japan 5160193 160193, Japan
Citazione:
T. Unuma et al., "Effect of steroids on gonadal growth and gametogenesis in the juvenile redsea urchin Pseudocentrotus depressus", BIOL B, 196(2), 1999, pp. 199-204

Abstract

Red sea urchins, 10 months old, were fed for 30 days on a casein-based diet containing progesterone, androstenedione, testosterone, estrone, or estradiol-17 beta. The mean gonad indices of male animals in the androstenedione- and the estrone-treated groups were significantly higher than those in the control group, suggesting that these steroids promote gonadal growth in male animals. Histological observations indicated that spermatogenesis in the estrone-treated group was also promoted compared to that in the control group. In contrast, female urchins were not obviously affected by the steroid-treated diets, probably because yearling female P. depressus are not otherwise ready to carry out gametogenesis. We conclude that androstenedione, estrone, and possibly their derivatives, are involved in the reproduction ofmale P. depressus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 12:57:28