Levels and patterns of genetic variation in Pampus minor:Assessment of a mitochondrial DNA control region sequence |
| |
| Authors: | Yuan Li Liyan Zhang Jing Zhang Cheng Liu Longshan Lin |
| |
| Institution: | 1.Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China2.Fujian Institute of Oceanography, Xiamen 361013, China3.Fisheries College, Jimei University, Xiamen 361021, China |
| |
| Abstract: | Pampus minor is an important commercial fish. Due to the similarity of external morphological characteristics among the genus Pampus species, P. minor has often been identified as the juvenile group of both P. cinereus and P. argenteus. While little genetic background on this species is known, this study was based on control region sequences and provided the first evaluation of the genetic signature of 264 individuals of P. minor from 11 populations along the coasts of China and Malaysia. The results indicate high genetic haplotype diversity and low nucleotide diversity in this species. Additionally, two differentiated haplotype lineages were identified in the P.minor populations. However, phylogenetic structures corresponding to the geographical locations were unable to be established. Analysis of molecular variance identified a vast majority of the genetic variation occurring within populations. F-statistic test value(FST) of pairwise indicated that great differences existed between the Chinese and Malaysian P. minor populations. For the Chinese populations, the genetic differences were insignificant with the exception of the Xiamen population, which is a marginal population. During the late Pleistocene, a population expansion of P. minor occurred. These expanded populations originated from the glacial refugium in the South China Sea and then rapidly occupied and adapted to their new habitat. The results of this study provide genetic information for ensuring the protection and management of P. minor resources. |
| |
| Keywords: | phylogeography South China Sea Pampus minor genetic diversity genetic differentiation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《海洋学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《海洋学报(英文版)》下载免费的PDF全文 |
|
