title: Genetic divergence and population demography of the Hainan endemic Black-throated Laughingthrush (Aves: Timaliidae, Garrulax chinensis monachus) and adjacent mainland subspecies.
abstract: Geographic variation in the Black-throated Laughingthrush (Garrulax chinensis) is examined to infer the influence of Pleistocene glacial oscillations on the genetic diversity of its subspecies. Mitochondrial evidence suggests that the endemic Hainan Island taxon, G. c. monachus, is monophyletic, whereas its closest continental relatives, G. c. chinensis and G. c. lochmius, are not. Multilocus coalescent analysis based on two mitochondrial and two nuclear intron loci indicates inter-subspecific genetic differentiation during the Pleistocene and substantial post-divergence genetic introgression from G. c. chinensis into G. c. lochmius. In contrast, G. c. monachus experienced no post-divergence gene flow despite occasional land-bridge contact with its continental relatives, suggesting its isolation may have been imposed by ecology as well as geography. It is probably reproductively isolated and should be treated as a distinct species.
authors: Guangdong Entomological Institute/South China Institute of Endangered Animals, Guangzhou 510260, China.
authors: Yuchun
authors: Y
authors: Wu
authors: Junhui
authors: J
authors: Huang
authors: Min
authors: M
authors: Zhang
authors: Site
authors: S
authors: Luo
authors: Yanhua
authors: Y
authors: Zhang
authors: Fumin
authors: F
authors: Lei
authors: Frederick H
authors: FH
authors: Sheldon
authors: Fasheng
authors: F
authors: Zou
mesh_terms: D000818:Animals; D002681:China; D004272:DNA, Mitochondrial / Q000235:genetics; D019143:Evolution, Molecular; D051456:Gene Flow; D014644:Genetic Variation; D005828:Genetics, Population; D006239:Haplotypes; D062312:Islands; D046109:Passeriformes / Q000235:genetics*; D060047:Reproductive Isolation; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial