title: Population structure in the endangered cyprinid fish Pararasbora moltrechti in Taiwan, based on mitochondrial and microsatellite DNAs.
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.
authors: Department of Life Sciences, National Cheng-Kung University, Tainan, 701, Taiwan.
authors: Tzen-Yuh
authors: TY
authors: Chiang
authors: Teh-Wang
authors: TW
authors: Lee
authors: Kui-Ching
authors: KC
authors: Hsu
authors: Chien-Hsien
authors: CH
authors: Kuo
authors: Der-Yuh
authors: DY
authors: Lin
authors: Hung-Du
authors: HD
authors: Lin
mesh_terms: D000818:Animals; D003530:Cyprinidae / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000235:genetics*; D003710:Demography; D056727:Endangered Species; D014644:Genetic Variation; D018895:Microsatellite Repeats / Q000235:genetics*; D058974:Phylogeography; D013624:Taiwan
chemical_list: D004272:DNA, Mitochondrial