Population structure of Aphyocypris normalis: phylogeography and systematics

By

Huang, Xiao-Xia
Hsu, Kui-Ching
Kang, Bin
Kuo, Po-Hsun
Tsai, Wan-Hsin
Liang, Chih-Ming
Lin, Hung-du
Wang, Wei-Kuang

Type

Article

Date of Publication

2019

Original Publication

ZooKeys

Volume

872

Pages

77--90

Subjects

Dispersal , Hainan Peninsula , vicariance , Wuzhishan and Yinggeling Mountains Range

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.872.33105

 

Abstract

Aphyocypris normalis(Teleostei: Cyprinidae) is an endemic species in South China, but little is known about its genetic structure. This study examined the population structure ofA. normalisusing sequences of the mitochondrial DNA control region and cytochromebgene (2,086 bp). In total, 107 specimens were collected from nine populations. All 105 mtDNA haplotypes were identified as belonging to two allopatric phylogroups. The results of a statistical dispersal-vicariance analysis (S-DIVA) suggested that the ancestral populations ofA. normaliswere distributed widely on Hainan Island and east of the Leizhou Peninsula. A comparison of the fixation indices NST(0.532) and GST(0.004) revealed that the phylogeny and geography had a significant relationship. Our study found that (1) the Wuzhishan and Yinggeling Mountain Range was an important barrier limiting gene exchange between populations on both sides; (2) cyclic climate changes may have shaped migrations and population differentiations; and (3) different colonization times caused different population diversities between codistributed species. In addition, the inter- and intraspecific diversities of the genusAphyocypriswere estimated.