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Phylogeographic structure and population demography of the leopard mandarin fish (Siniperca scherzeri) in the Pearl River drainage
Environmental Biology of Fishes ( IF 1.4 ) Pub Date : 2022-03-30 , DOI: 10.1007/s10641-022-01247-3
Minghui Lin , Xufang Liang , Junjie Gao , Yaqi Dou , Yulan Kuang , Qiwei Zhang

Drainage development and climatic fluctuations shape the phylogeographic patterns of freshwater fish species. In this study, we used the mitochondrial control region to determine the population structure and demographical history of the leopard mandarin fish (Siniperca scherzeri) in the Pearl River drainage and to test whether the historical development of the river and climatic changes that occurred in southern China have influenced the phylogeographic patterns of this species. Phylogenetic analyses, the use of haplotype networks, and population structure analyses revealed two geographically distinct genetic lineages, A and B. Lineage A was widespread in the Xijiang and Beijiang Rivers, whereas lineage B was only detected in the Dongjiang River. Dating analyses and biogeographic analyses indicated that the two lineages originated from a vicariance event 1.11 million years ago (Ma), which coincides with the historical development of the drainage during the early Quaternary period. Demographic analyses showed that the populations of lineage B experienced sharp demographic contraction of 0.01 Ma, which suggests that sea-level transgression after the Last Glacial Maximum may have played a critical role in the population demography of lineage B. By contrast, the populations of lineage A were less influenced by the sea-level transgression owing to larger distribution ranges. Overall, our study uncovered the phylogeographic patterns of Siniperca scherzeri in the Pearl River drainage and provides valuable information for the management and conservation of this species.

更新日期:2022-03-30
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