...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Asynchrony in settlement time between the closely related oysters Crassostrea angulata and C. gigas in Ria Formosa lagoon (Portugal)
【24h】

Asynchrony in settlement time between the closely related oysters Crassostrea angulata and C. gigas in Ria Formosa lagoon (Portugal)

机译：Ria Formosa泻湖（葡萄牙）中密切相关的牡蛎Crassostrea angulata和C. gigas之间的沉降时间异步

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

The Portuguese oyster Crassostrea angulata and the Pacific oyster Crassostrea gigas are very closely related species originating from Asia that were introduced in Europe. The objectives of the present study were to determine if there is asynchrony in settlement time of C. angulata and C. gigas larvae in an area where both taxa coexist and if hybridization between the two species occurs throughout the breeding season. Oyster collectors were deployed every two weeks during one year in two different sites in Ria Formosa lagoon (Portugal) and the oysters that settled were genotyped with nuclear and mitochondrial markers. Settlement of Crassostrea sp. was observed from April to November 2004 (n = 694), with two distinct periods. In the first period (April), when 19% of the oysters settled, the haplotypes and alleles characteristic of C. gigas were mainly observed. In the following settlement period (July to November), the frequency of haplotypes and alleles of C. gigas decreased over time while those characteristics of C. angulata reached high frequencies by the end of the settlement period. Our results suggest that C. gigas was able to reproduce at lower temperatures than C. angulata in spring. However, the non-significant allelic disequilibrium observed during almost all settlement periods suggests that hybridization is widespread in time. The results obtained in the present study show that there are differences in the reproductive behavior between C. angulata and C. gigas that may limit gene flow between the two species.
机译：葡萄牙牡蛎Crassostrea angulata和太平洋牡蛎Crassostrea gigas是起源于欧洲的密切相关的物种，起源于亚洲。本研究的目的是确定在两个分类单元共存的区域中，C。angulata和C. gigas幼虫的沉降时间是否存在异步，以及两个物种在整个繁殖季节是否发生杂交。牡蛎采集者在一年中每两周在Ria Formosa泻湖（葡萄牙）的两个不同地点进行部署，对定居的牡蛎进行核型和线粒体标记的基因分型。 Crassostrea sp。的定居。 2004年4月至2004年11月（n = 694）被观测到，有两个不同的时期。在第一个时期（4月），当牡蛎定居于19％时，主要观察到了C. gigas的单倍型和等位基因。在接下来的定居期（7月至11月），长角C的单倍型和等位基因的频率随着时间的流逝而下降，而安哥拉长角的那些特征在定居期结束时达到高频率。我们的结果表明，比起C. angulata，春季C. gigas能够在较低的温度下繁殖。但是，几乎在所有沉降期观察到的非等位基因不平衡现象表明杂交在时间上很普遍。在本研究中获得的结果表明，C。angulata和C. gigas之间在生殖行为上存在差异，这可能会限制两个物种之间的基因流动。

著录项

  • 来源
    《Marine biology》 |2017年第5期|110.1-110.8|共8页
  • 作者

    Batista Frederico M.; Fonseca Vera G.; Ruano Francisco; Boudry Pierre;

  • 作者单位

    Inst Portugues Mar & Atmosfera, Estacao Expt Moluscicultura Tavira, Av 5 Outubro, P-8700305 Olhao, Portugal|Univ Algarve, Ctr Ciencias Mar CCMAR, Campus Gambelas, P-8005139 Faro, Portugal;

    Univ Algarve, Ctr Ciencias Mar CCMAR, Campus Gambelas, P-8005139 Faro, Portugal|Zool Res Museum Alexander Koenig ZFMK, Ctr Mol Biodivers Res, Adenauerallee 160, D-53113 Bonn, Germany;

    Inst Portugues Mar & Atmosfera, Av Brasilia, P-1449006 Lisbon, Portugal;

    IFREMER, Unite Rech Physiol Fonct Organismes Marins, Lab Sci Environm Marin, UMR 6539,LEMAR,CNRS,UBO,IRD,ZI Pointe Diable, CS 10070, F-29280 Plouzane, France;

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

相似文献

  • 外文文献
  • 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