• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin de la Societe Zoologique de France >ETUDE DU CONTROLE DE LA PONTE CHEZ LA SEICHE SEPIA OFFICINALIS CARACTERISATION ET ETUDE DE PEPTIDES REGULATEURS D'ORIGINE OVARIENNE
【24h】

ETUDE DU CONTROLE DE LA PONTE CHEZ LA SEICHE SEPIA OFFICINALIS CARACTERISATION ET ETUDE DE PEPTIDES REGULATEURS D'ORIGINE OVARIENNE

机译：SEICHE SEPIA OFFICINALIS表征中的层控制研究和卵巢原调控肽的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In Sepia officinalis, egg-laying consists of successive stereotyped steps in the following sequence: (1) ovulation, (2) embedding, (3) fertilization, (4) attachment of the egg to a suitable substrate. Study of the cuttlefish in the natural environment, in captivity and in the lab has clarified some of the egg-laying mechanisms. New peptides are identified by means of purification methods, in vitro biotests and mass spectrometry analysis. Among these peptides, the SepOvotropin or PKDSMLLLQVPVYamide was characterised, which modulated contractions of the whole genital tract from a threshold concentration of 10~(-19) M as opposed to 10~(-14) M for ILME. The latter released by the oocyte in the female genital tract and by the egg in the environment, is the first pheromone characterised in a cephalopod mollusc. Another peptide involved during an ultimate steps of egg-laying was also isolated: the PIDPGVamide or SepSAP. This oocyte factor, swich attracts spermatozoa at concentrations near 10~(-17)M, is the first sperm-attracting peptide identified in protostomians. The ensemble of these peptidic factors provides a preliminary framework for regulatory system of egg-laying, emphasising the complexity of this physiological mechanism.
机译：在棕褐色中，产卵由连续的定型步骤组成，其顺序如下：（1）排卵，（2）包埋，（3）受精，（4）将卵附着在合适的基质上。在自然环境，人工饲养和实验室中对墨鱼的研究阐明了一些产卵机制。通过纯化方法，体外生物测试和质谱分析鉴定新肽。在这些肽中，表征了SepOvotropin或PKDSMLLLQVPVYamide，它们从阈值浓度10〜（-19）M调节了整个生殖道的收缩，而ILME为10〜（-14）M。后者由雌性生殖道的卵母细胞和环境中的卵释放，是第一种以头足类软体动物为特征的信息素。还分离了在产卵的最终步骤中涉及的另一种肽：PIDPGVamide或SepSAP。卵母细胞因子swich在浓度接近10〜（-17）M时吸引精子，是原学家中发现的第一个吸引精子的肽。这些肽因子的集合为卵子的调控系统提供了初步的框架，强调了这种生理机制的复杂性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号