• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>other >Demographic history and population genetic analysis of Decapterus maruadsi from the northern South China Sea based on mitochondrial control region sequence
【2h】

Demographic history and population genetic analysis of Decapterus maruadsi from the northern South China Sea based on mitochondrial control region sequence

机译：基于线粒体控制区序列的南海北部of鱼的人口历史和种群遗传分析

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Late Pleistocene climate oscillations are believed to have greatly influenced the distribution, population dynamics, and genetic variation of many marine organisms in the western Pacific. However, the impact of the late Pleistocene climate cycles on the demographic history and population genetics of pelagic fish in the northern South China Sea (SCS) remains largely unexplored. In this study, we explored the demographic history, genetic structure, and genetic diversity of Decapterus maruadsi, a typical pelagic fish, over most of its range in the northern SCS. A 828–832 bp fragment of mitochondrial control region were sequenced in 241 individuals from 11 locations. High haplotype diversity (0.905–0.980) and low nucleotide diversity (0.00269–0.00849) was detected, revealing low levels of genetic diversity. Demographic history analysis revealed a pattern of decline and subsequent rapid growth in the effective population size during deglaciation, which showed that D. maruadsi experienced recent demographic expansion after a period of low effective population size. Genetic diversity, genetic structure, and phylogenetic relationship analysis all demonstrated that no significant genetic differentiation existed among the populations, indicating that D. maruadsi was panmictic throughout the northern SCS. Periodic sea-level changes, fluctuation of the East Asian Monsoon, and Kuroshio variability were responsible for the population decline and expansion of D. maruadsi. The demographic history was the primary reason for the low levels of genetic diversity and the lack of significant genetic structure. The life history characteristics and ocean currents also had a strong correlation with the genetic homogeneity of D. maruadsi. However, the genetic structure of the population (genetic homogeneity) is inconsistent with biological characteristics (significant difference), which is an important reminder to identify and manage the D. maruadsi population carefully.
机译：据信晚更新世气候振荡极大地影响了西太平洋许多海洋生物的分布，种群动态和遗传变异。然而，晚更新世气候周期对南中国海北部（SCS）中上层鱼类的人口历史和种群遗传学的影响仍未发现。在这项研究中，我们探索了南海北部大部分地区的典型中上层鱼类Decapterus maruadsi的人口历史，遗传结构和遗传多样性。线粒体控制区的828–832 bp片段在11个位置的241个个体中进行了测序。检测到高单倍型多样性（0.905-0.980）和低核苷酸多样性（0.00269-0.00849），表明遗传多样性水平低。人口历史分析显示，在冰消融化过程中，有效人口规模呈下降趋势，随后迅速增长，这表明D. maruadsi在一段有效人口规模较低的时期之后经历了最近的人口扩张。遗传多样性，遗传结构和系统发育关系分析均表明，这些种群之间不存在显着的遗传分化，这表明整个南海北部D. maruadsi都呈恐慌性。周期性的海平面变化，东亚季风的波动和黑潮的变化是造成毛。虫种群减少和扩大的原因。人口历史是造成遗传多样性水平低和缺乏重要遗传结构的主要原因。生活史特征和洋流也与D. maruadsi的遗传同质性有很强的相关性。但是，种群的遗传结构（遗传同质性）与生物学特征（显着差异）不一致，这是提醒人们认真识别和管理D. maruadsi种群的重要提示。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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