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1 September 2011 Population Structure in the Endangered Cyprinid Fish Pararasbora moltrechti in Taiwan, Based on Mitochondrial and Microsatellite DNAs
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Abstract

The genetic structure of four populations of Pararasbora moltrechti, an endemic species of the Cyprinidae in Taiwan, was investigated based on the genetic variation of mtDNA Cyt b gene and five microsatellite loci. High haplotype diversity (h = 0.92) but low nucleotide diversity (0.004) in mtDNA was detected in this endangered species. In total, 33 haplotypes and four clusters were identified in its mtDNA. Nevertheless, low correspondence was found between geographical division and mtDNA clusters. In contrast, Bayesian cluster analysis of the microsatellite data identified four genetic groups and revealed highly structured populations. Significantly negative Tajima's D statistics and mismatch distribution analyses suggest that P. moltrechti populations may have experienced a demographic expansion. In light of the results of a nested clade analysis of mtDNA haplotypes, we conclude that recent population fluctuations and restricted gene flow played major roles in shaping the spatial genetic structure of P. moltrechti populations.

© 2011 Zoological Society of Japan
Tzen-Yuh Chiang, Teh-Wang Lee, Kui-Ching Hsu, Chien-Hsien Kuo, Der-Yuh Lin, and Hung-Du Lin "Population Structure in the Endangered Cyprinid Fish Pararasbora moltrechti in Taiwan, Based on Mitochondrial and Microsatellite DNAs," Zoological Science 28(9), 642-651, (1 September 2011). https://doi.org/10.2108/zsj.28.642
Received: 25 April 2010; Accepted: 1 February 2011; Published: 1 September 2011
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