Genetic Diversity of Jinshaia sinensis (Cypriniformes, Balitoridae) Distributed Upstream of the Yangtze River

The upper reaches of the Yangtze River (upper YR) are a biological zone with extremely rich fish diversity, especially endemic fish. However, long-term human interference, such as environmental pollution and cascade hydropower construction, has significantly changed habitat many is threatening number genetic diversity populations. Jinshaia sinensis typical small but rare that found in YR, its structure still need further study. To understand current levels J. sinensis, we analyzed population history, structure, etc., three populations based on two mitochondrial genes (the cytochrome-c oxidase subunit I, COI, cytochrome-b gene, Cytb) nuclear (recombination-activating protein 1, RAG1, rhodopsin, RH). analysis indicated had high haplotype (h) nucleotide (Pi). Population pairwise FST revealed significant divergence between Lijiang Luzhou for all Panzhihua populations, except COI gene; however, analyses molecular variance (AMOVA) showed no geographic among gene flow also certain degree exchange Haplotype network low shared haplotypes Neutrality test mismatch distribution results only experienced obvious expansion. Overall, these indicate single evolutionarily unit, when considering threat disturbance to population, it necessary carry out monitoring other fishes similar ecological habits order maintain YR.