Aquat. Living Resour.
Volume 32, 2019
|Number of page(s)||10|
|Published online||18 March 2019|
Spatial genetic subdivision among populations of Pampus chinensis between China and Pakistan: testing the barrier effect of the Malay Peninsula
Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, PR China
2 National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, PR China
3 Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources, Zhoushan 316021, PR China
Handling Editor: Ziniu Yu
Accepted: 13 February 2019
Tissue samples from 84 Pampus chinensis individuals were collected from four geographic regions within the Indo–Pacific Ocean and analyzed using mitochondrial and nuclear DNA markers. Distinct genetic heterogeneity was found for both types of markers between Chinese and Pakistani populations, while the diversity of this species was high in all populations. In combination with published information on marine species with similar distributions, these results suggested that the Malay Peninsula, or a less effective supplement, played a role in shaping the contemporary genetic structure. This population structure was presumably reflected in P. chinensis, whose populations were genetically isolated during Pleistocene glaciations and then did not experience secondary contact between previous refuge populations. However, P. chinensis showed genetic continuity in China or Pakistan, which indicated that the populations in different geographical regions constituted a single panmictic stock with high gene flow, respectively. The spatial genetic subdivision evident among populations indicates that P. chinensis in this Indo–Pacific region should be managed as different independent stocks to guide the sustainability of this fisheries resource.
Key words: Phylogeography / genetic structure / mitochondrial DNA / microsatellite / isolation by distance
© EDP Sciences 2019
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