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首页> 外文期刊>Comparative biochemistry and physiology, Part C. Pharmacology, toxicology and endocrinology: An international journal >Crustacean ecdysteriods in reproduction and embryogenesis [Review]
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Crustacean ecdysteriods in reproduction and embryogenesis [Review]

机译：甲壳类蜕皮动物在生殖和胚胎发生中的作用[综述]

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摘要

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 sequestered into 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 molt inhibiting 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. [References: 118]
机译：蜕皮类固醇是甲壳动物中的蜕皮激素，就像其他节肢动物一样。它们还具有控制繁殖和胚胎发生的功能。现有证据表明，蜕皮类固醇通过与蛋黄前体蛋白结合而被隔离到卵巢中。在甲壳纲中尚未证明卵巢的类固醇生成能力。尽管进行了一些研究，蜕皮类固醇在卵母细胞成熟中的作用尚不完全清楚。然而，胚胎蜕皮类固醇经历明显的波动，与特定的发育阶段有关，包括胚胎被膜和表皮的分泌。卵中的蜕皮类固醇代谢似乎在整个胚胎发生过程中都是活跃的，因为游离的蜕皮类固醇迅速转化为结合物，反之亦然。除了将其灭活为排泄性蜕皮甾酸外。视线神经肽（如蜕皮抑制激素）在Y器官的蜕皮激素合成中起主要作用，尽管最近的证据表明对另一种内分泌腺（Y器官合成的下颌器官）具有刺激作用。 （C）2000 Elsevier Science Inc.保留所有权利。 [参考：118]

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