[1].Testing Hypotheses of Pleistocene Population History Using Coalescent Simulations: Refugial Isolation and Secondary Contact in Pseudepidalea raddei (Amphibia: Bufonidae)[J].Asian Herpetological Research,2012,3(2):103-113.[doi:10.3724/SP.J.1245.2012.00103]
 Bingjun DONG,Jing CHE,et al.Testing Hypotheses of Pleistocene Population History Using Coalescent Simulations: Refugial Isolation and Secondary Contact in Pseudepidalea raddei (Amphibia: Bufonidae)[J].Asian Herpetological Research(AHR),2012,3(2):103-113.[doi:10.3724/SP.J.1245.2012.00103]

Testing Hypotheses of Pleistocene Population History Using Coalescent Simulations: Refugial Isolation and Secondary Contact in Pseudepidalea raddei (Amphibia: Bufonidae)()

Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

Original Article


Testing Hypotheses of Pleistocene Population History Using Coalescent Simulations: Refugial Isolation and Secondary Contact in Pseudepidalea raddei (Amphibia: Bufonidae)
Bingjun DONG1 2 Jing CHE3 Li DING4 Song HUANG5 Robert W. MURPHY3 6 Ermi ZHAO1 4* and Yaping ZHANG3<
1 Key Laboratory for Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu 610064, Sichuan, China
2 College of Chemistry and Life Sciences, Shenyang Normal University, Shenyang 110034, Liaoning, China
3 State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, Yunnan, China
4 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610064, Sichuan, China
5 Department of Biology, Huangshan University, Huangshan 245021, Anhui, China
6 Centre for Biodiversity and Conservation Biology, Department of Natural History, Royal Ontario Museum, 100 Queen’s Park, Toronto, ON, M5S 2C6, Canada
Mongolian toad Pleistocene refugia phylogeography biogeography
The impact of the Quaternary glaciation on eastern China’s local fauna and flora is a topic of considerable interest. We use mitochondrial DNA (mtDNA) sequences and coalescent simulations to test two general biogeographic hypotheses related to the effect of the Pleistocene climatic fluctuations on a widespread, eastern Chinese amphibian, Pseudepidalea raddei. Genealogical reconstructions are made and they detect major western and eastern lineages, which overlap in northwestern China, and possibly indicate the secondary contact of the populations that had entered the region from separate glacial refugia. Coalescent tests rejected alternative hypotheses of fragmentation of either a widespread ancestor or panmixia. The tests instead supported the hypothesis of geographic isolation and a remarkable dispersal pattern in one of the lineages. Though the Pleistocene climatic events are known to have affected the historical distributions and intra-specific divergence of Chinese squamates, coalescent and non-coalescent demographic analyses indicated that the toad P. raddei was not adversely affected by glacial cycling. Presumably, an increase in the amount of climatically mild habitats in East Asia is due to the development of monsoons since the Mid-late Pleistocene is responsible for the relatively mild effects.


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更新日期/Last Update: 2016-03-15