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Expansion and Contraction of Lake Basin Shape the Genetic Structure of (Osteichthyes: Cypriniformes: Cyprinidae) Populations in Central Yunnan, China

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Journal Ecol Evol
Date 2024 Jan 22
PMID 38250223
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Abstract

Geological events can strongly affect the genetic structures and differentiation of fish populations. Especially, as an endemic fish of the genus in the Yunnan-Guizhou Plateau, the effects of key geological events on the distributions and genetic structures remain poorly understood. Examining the phylogeographic patterns of fishes can be useful for elucidating the spatio-temporal dynamics of their population size, dispersal history and extent of geographical isolation, thereby providing a theoretical basis for their protection. Here, we used single nucleotide polymorphisms (SNP) method to investigate the phylogeographic patterns of fishes. Our analysis supports the endemicity of , but the samples of different regions of contain multiple ancestral components, which displayed more admixed and diversified genetic components, this may be due to the polymorphism of the ancestors themselves, or gene infiltration caused by hybridization between adjacent species of . We estimate that the most recent common ancestor (MRCA) of fish in the Central Yunnan Basin at approximately 3.75~3.11 Ma, and infer that the evolution of in the central Yunnan Basin is closely related to the formation of plateau lakes (around 4.0~0.02 Ma), and identifies the formation of Dianchi Lake and Fuxian Lake as key geological events shaping population structure. It is also the first time to prove that the altitude change has a great influence on the genetic variation among the populations of

Citing Articles

Expansion and contraction of lake basin shape the genetic structure of (Osteichthyes: Cypriniformes: Cyprinidae) populations in Central Yunnan, China.

Che X, Zhang Y, Wu A, Pan X, Wang M, Yang J Ecol Evol. 2024; 14(1):e10840.

PMID: 38250223 PMC: 10797211. DOI: 10.1002/ece3.10840.

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