• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Reproductive aspects of Notothenia rossii and N-coriiceps (Perciformes, Nototheniidae) at Potter Cove, 25 de Mayo (King George) Island during austral summer
【24h】

Reproductive aspects of Notothenia rossii and N-coriiceps (Perciformes, Nototheniidae) at Potter Cove, 25 de Mayo (King George) Island during austral summer

机译：南方夏季期间，位于德梅奥（乔治国王）岛25波特海湾的罗丝氏夜蛾和N-鸟跳虫（Perciformes，Nototheniidae）的生殖状况

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

Several fish species of the suborder Notothenioidei (Perciformes) predominate in the Antarctic Convergence Zone; nevertheless, reproductive studies are scarce due to difficulties on regular sampling. This study takes the research area of reproductive biology of notothenioids to a new level by providing, for the first time, data on sex hormone and vitellogenin detection in the blood of females of Notothenia rossii and N. coriiceps and correlates this data with morphological maturity indices as well as ovarian histology. Fish were captured during the Antarctic summer at Potter Cove, 25 de Mayo (King George) Island, and blood and ovary were collected. Histological analysis revealed that females of both fish possess group synchronous ovarian development with two distinct clutches of oocytes: a more advanced batch of vitellogenic oocytes ready for spawning and a second batch of previtellogenic oocytes for the next spawning event. Since liver vitellogenin synthesis is stimulated by estradiol produced by the ovaries, gonadal development, estradiol levels, and vitellogenin showed that both species were at a more advanced stage of maturation in March than in January. On the other hand and irrespectively of the month, gonadosomatic index and plasma estradiol levels of N. coriiceps were higher than those of N. rossii. Furthermore, females of N. coriiceps showed an advanced stage of vitellogenesis or were ready for spawn, contrary to results of previous studies. Our results indicate the successful use of gonadal morphology, estradiol, and vitellogenin detection for the estimation of sexual maturity stage of female adults.
机译：在南极收敛带中，Notothenioidei亚目（Perciformes）的几种鱼类占优势；然而，由于定期取样的困难，生殖研究很少。这项研究首次提供了玫瑰色诺丝氏菌和玫瑰色念珠菌女性血液中性激素和卵黄蛋白原的检测数据，并将其与形态成熟度指数相关联，从而将类胡萝卜素的生殖生物学研究领域提高到一个新的水平。以及卵巢组织学在南极夏季，在25 de Mayo（乔治国王）岛的Potter Cove捕获了鱼，并收集了血液和卵巢。组织学分析表明，两条鱼的雌性都具有群体同步的卵巢发育，并带有两个不同的卵母细胞：准备好产卵的一批高级卵黄卵母细胞和下一次产卵事件的第二批卵原性卵母细胞。由于卵巢产生的雌二醇会刺激肝脏卵黄蛋白原的合成，因此性腺发育，雌二醇水平和卵黄蛋白原的含量表明，这两个物种在3月都比1月处于成熟阶段。另一方面，不管是哪个月，Corisicepseps的性腺体指数和血浆雌二醇水平均高于Rossii。此外，与以前的研究结果相反，N。coriiceps的女性表现出晚期卵黄发生或已准备好产卵。我们的结果表明，成功使用了性腺形态，雌二醇和卵黄蛋白原检测技术来评估女性成年人的性成熟阶段。

著录项

  • 来源
    《Polar biology》 |2017年第1期|1-11|共11页
  • 作者

    Ferreira M. F.; Varela M. L.; Lo Nostro F.; Ansaldo M.; Genovese G.;

  • 作者单位

    Univ Buenos Aires, Lab Ecotoxicol Acuat, Dept Biodiversidad & Biol Expt, Fac Ciencias Exactas & Nat, C1428EGA, Buenos Aires, DF, Argentina|UBA, CONICET, IBBEA, Buenos Aires, DF, Argentina;

    Univ Buenos Aires, Lab Ecotoxicol Acuat, Dept Biodiversidad & Biol Expt, Fac Ciencias Exactas & Nat, C1428EGA, Buenos Aires, DF, Argentina|UBA, CONICET, IBBEA, Buenos Aires, DF, Argentina;

    Univ Buenos Aires, Lab Ecotoxicol Acuat, Dept Biodiversidad & Biol Expt, Fac Ciencias Exactas & Nat, C1428EGA, Buenos Aires, DF, Argentina|UBA, CONICET, IBBEA, Buenos Aires, DF, Argentina;

    Inst Antart Argentino, Ave 25 Mayo 1150,B1650HML San Martin, Buenos Aires, DF, Argentina;

    Univ Buenos Aires, Lab Ecotoxicol Acuat, Dept Biodiversidad & Biol Expt, Fac Ciencias Exactas & Nat, C1428EGA, Buenos Aires, DF, Argentina|UBA, CONICET, IBBEA, Buenos Aires, DF, Argentina;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nototheniidae; Vitellogenin; Group synchronous ovarian development; Sex steroids; Potter Cove;

    机译：Nototheniidae;Vitellogenin;群体同步卵巢发育;性类固醇;Potter Cove;

相似文献

  • 外文文献
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