...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Molecular ecology >Determining parentage and relatedness from genetic markers sheds light on patterns of marine larval dispersal
【24h】

Determining parentage and relatedness from genetic markers sheds light on patterns of marine larval dispersal

机译：从遗传标记物确定亲缘关系和亲缘关系揭示了海洋幼虫扩散的模式

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

Population connectivity, the extent to which geographically separated subpopulations exchange individuals and are demographically linked, is important to the scientific management of marine living resources. In theory, the design of a marine protected area, for example, depends on an explicit understanding of how dispersal of planktonic larvae affects metapopulation structure and dynamics (Botsford et al. 2001). In practice, for most marine metazoans with planktonic larvae, the mean and variance of the distances that larvae disperse are unobservable quantities, owing to the small sizes of larvae and the very large volumes through which they are distributed. Simulation of dispersal kernels with models that incorporate oceanography and limited aspects of larval biology and behaviour, coupled with field studies of larval distribution, abundance, and settlement, have provided the best available approaches to date for understanding connectivity of marine populations (Cowen et al. 2006). On the other hand, marine population connectivity has often been judged by spatial variation in the frequencies of alleles and genotypes, although the inherent limitations of this indirect approach to measuring larval dispersal have often been overlooked (Hedgecock et al. 2007). More recently, researchers have turned to genetic methods and highly polymorphic markers that can provide direct evidence of population connectivity in the form of parentage or relatedness of recruits (e.g. Jones et al. 2005). In this issue, Christie et al. (2010) provide a particularly elegant example, in which both indirect and novel direct genetic methods are used to determine the major ecological processes shaping dispersal patterns of larval bicolour damselfish Stegastes partitus, a common and widespread reef fish species in the Caribbean Basin (Fig. 1).
机译：人口连通性是地理上分离的子种群交换个体并在人口上相互联系的程度，对海洋生物资源的科学管理至关重要。从理论上讲，例如，海洋保护区的设计取决于对浮游幼虫的扩散如何影响种群结构和动力学的明确理解（Botsford等，2001）。在实践中，对于大多数具有浮游幼虫的海洋后生动物来说，由于幼虫的尺寸较小且它们分布的体积很大，因此幼虫分散距离的均值和方差是不可观察到的。利用结合了海洋学和幼虫生物学和行为的有限方面的模型对扩散核进行模拟，再加上对幼虫分布，丰度和沉降的田野研究，为迄今为止了解海洋种群的连通性提供了最佳的可用方法（Cowen等。 2006）。另一方面，尽管经常忽略这种间接方法测量幼虫散布的固有局限性，但经常通过等位基因和基因型频率的空间变化来判断海洋种群的连通性（Hedgecock等，2007）。最近，研究人员转向了遗传学方法和高度多态的标记物，这些标记物可以以新兵的亲属关系或亲属关系的形式提供人口连通性的直接证据（例如Jones等人2005）。在这个问题上，克里斯蒂等人。 （2010）提供了一个特别优雅的例子，其中间接和新颖的直接遗传方法都被用来确定主要的生态过程，从而塑造了幼体双色雀鲷无尾类固醇（Segagas partis）的散布模式，后者是加勒比海盆地中常见和普遍的礁鱼物种（图。 1）。

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