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February 21, 2026FishesOpen Access

Phylogeographic Pattern and Genetic Structure of the Cyprinid Fish Microphysogobio kachekensis (Oshima 1926) in Mainland China and Hainan Island Based on Mitochondrial and Nuclear DNA

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Authors

JYJie YangJZJun ZhaoJWJunjie Wang

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Overview

Investigation reveals strong population differentiation in Microphysogobio kachekensis, indicating conservation needs in freshwater biodiversity.

Key Points

  • To understand the genetic structure and phylogeographic patterns of Microphysogobio kachekensis across mainland China and Hainan Island.
  • Analyzed mitochondrial and nuclear DNA markers from 200 individuals of Microphysogobio kachekensis.
  • Conducted phylogeographic analyses to identify lineages structured by drainage basins.
  • Assessed population differentiation using FST statistics and supported barriers with SAMOVA/AMOVA analysis.
  • Identified two major mitochondrial lineages and multiple sublineages structured by drainage basins.
  • Resolved four nuclear lineages that concord with geographic locations.
  • Found strong population differentiation and significant barriers to gene flow, including major regional geographical features.

Cite This Study

Yang et al. (2026) studied this question.

synapsesocial.com/papers/69994bef873532290d020117https://doi.org/10.3390/fishes11020122
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