Significance of pre-Quaternary climate change for montane species diversity: Insights from Asian salamanders (Salamandridae: Pachytriton)

CORC > 昆明动物研究所 > 昆明动物研究所 > 遗传资源与进化国家重点实验室 > 两栖爬行类多样性与进化

	Significance of pre-Quaternary climate change for montane species diversity: Insights from Asian salamanders (Salamandridae: Pachytriton)
	Wu YK[*]1,2; Wang YZ 3; Jiang K 4; Hanken J 1,2
刊名	MOLECULAR PHYLOGENETICS AND EVOLUTION
	2013
卷号	66 期号:1 页码:380-390
关键词	Range expansion Temperature buffer-zone model Pliocene warming Amphibians East Asian summer monsoon Range expansion
通讯作者	yunkewu@fas.harvard.edu
合作状况	其它
英文摘要	Despite extensive focus on the genetic legacy of Pleistocene glaciation, impacts of earlier climatic change on biodiversity are poorly understood. Because amphibians are highly sensitive to variations in precipitation and temperature, we use a genus of Chinese montane salamanders (Salamandridae: Pachytriton) to study paleoclimatic change in East Asia, which experienced intensification of its monsoon circulation in the late Miocene associated with subsequent Pliocene warming. Using both nuclear and mitochondrial DNA sequences, we reconstruct the species tree under a coalescent model and demonstrate that all major lineages originated before the Quaternary. Initial speciation within the genus occurred after the summer monsoon entered a stage of substantial intensification. Heavy summer precipitation established temporary water connectivity through overflows between adjacent stream systems, which may facilitate geographic range expansion by aquatic species such as Pachytriton. Species were formed in allopatry likely through vicariant isolation during or after range expansion. To evaluate the influence of Pliocene warming on these cold-adapted salamanders, we construct a novel temperature buffer-zone model, which suggests widespread physiological stress or even extinction during the warming period. A significant deceleration of species accumulation rate is consistent with Pliocene range contraction, which affected P. granulosus and P. archospotus the most because they lack large temperature buffer zones. In contrast, demographic growth occurred in species for which refugia persist. The buffer-zone model reveals the Huangshan Mountain as a potential climatic refugium, which is similar to that found for other East Asian organisms. Our approach can incorporate future climatic data to evaluate the potential impact of ongoing global warming on montane species (particularly amphibians) and to predict possible population declines.
收录类别	SCI
资助信息	This work is supported by the Miyata fund, the Barbour fund and the Alexander Agassiz Fellowship in Oceanography and Zoology from the Museum of Comparative Zoology, Harvard Uni- versity, and the National Natural Science Foundation of China (NSFC 31071892 to Y.Z. Wang).
语种	英语
WOS记录号	WOS:000312417800033
公开日期	2014-10-20
内容类型	期刊论文
源URL	[http://159.226.149.42:8088/handle/152453/8101]
专题	昆明动物研究所_两栖爬行类多样性与进化
作者单位	1.Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA 2.Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA 3.Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China 4.Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
推荐引用方式 GB/T 7714	Wu YK[*],Wang YZ,Jiang K,et al. Significance of pre-Quaternary climate change for montane species diversity: Insights from Asian salamanders (Salamandridae: Pachytriton)[J]. MOLECULAR PHYLOGENETICS AND EVOLUTION,2013,66(1):380-390.
APA	Wu YK[*],Wang YZ,Jiang K,&Hanken J.(2013).Significance of pre-Quaternary climate change for montane species diversity: Insights from Asian salamanders (Salamandridae: Pachytriton).MOLECULAR PHYLOGENETICS AND EVOLUTION,66(1),380-390.
MLA	Wu YK[*],et al."Significance of pre-Quaternary climate change for montane species diversity: Insights from Asian salamanders (Salamandridae: Pachytriton)".MOLECULAR PHYLOGENETICS AND EVOLUTION 66.1(2013):380-390.