干旱区生态环境知识资源中心(Arid): Eocene-Oligocene cooling and the diversification of Hemidactylus geckos in Peninsular India

Arid

DOI	10.1016/j.ympev.2019.106637
	Eocene-Oligocene cooling and the diversification of Hemidactylus geckos in Peninsular India
	Lajmi, Aparna 1,2; Karanth, Praveen K.1
通讯作者	Lajmi, Aparna
来源期刊	MOLECULAR PHYLOGENETICS AND EVOLUTION
ISSN	1055-7903
EISSN	1095-9513
出版年	2020
卷号	142
英文摘要	The Eocene-Oligocene cooling marks a global shift towards a cooler and drier climate, concurrent with significant turnover in biota globally. In Peninsular India, palynological investigations suggest a shift from wet rainforest vegetation to dry and seasonal species during this period. However, the grassland and open habitats that dominate this region at present expanded relatively recently due to Late Miocene intensification of monsoon seasonality. We test the possible role of these climatic shifts in generating the dry habitat diversity of an endemic radiation of Hemidactylus geckos distributed in both wet and dry habitats, by investigating whether (a) the beginning of the diversification of dry habitat lineages overlap with the Eocene-Oligocene cooling or late Miocene aridification and (b) accompanied by an increase in diversification. Molecular data (two nuclear and two mitochondrial gene fragments) were generated for samples collected across Peninsular India, and along with previously published data, a time-calibrated phylogeny was reconstructed. Ancestral state reconstruction of dry and wet habitat states was carried out on the time-calibrated phylogeny and gamma-statistics along with a test for diversity-dependent diversification utilized to examine the trend in lineage accumulation. Results show the ancestral node of this radiation to have a dry habitat state, which began diversifying between 39 and 32 million years ago, concurrent with the Eocene-Oligocene cooling. Furthermore, lineage diversification fit a diversity-dependent model of diversification and the gamma-statistics revealed an early increase in diversification followed by a slow-down later. The deep divergences of dry habitat lineages concurrent with the Eocene-Oligocene cooling suggest that this could have served as an ecological opportunity facilitating an early increase in lineage diversification of Hemidactylus in this region. These results suggest an ancient origin and long persistence of arid ecosystems in Peninsular India.
英文关键词	Paleoclimate Biogeography Radiation Aridification South Asia Gecko
类型	Article
语种	英语
国家	India ; Israel
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000498650200001
WOS关键词	1817 SQUAMATA GEKKONIDAE ; GENUS HEMIDACTYLUS ; CYRTODACTYLUS SQUAMATA ; PHYLOGENETIC ANALYSES ; SPECIES DELIMITATION ; NICHE EVOLUTION ; CLIMATE-CHANGE ; EASTERN GHATS ; OKEN ; ARIDIFICATION
WOS类目	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Biochemistry & Molecular Biology ; Evolutionary Biology ; Genetics & Heredity
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312228
作者单位	1.Indian Inst Sci, Ctr Ecol Sci, Bangalore 560012, Karnataka, India; 2.Univ Haifa, Inst Evolut, Dept Evolutionary & Environm Biol, IL-3498838 Haifa, Israel
推荐引用方式 GB/T 7714	Lajmi, Aparna,Karanth, Praveen K.. Eocene-Oligocene cooling and the diversification of Hemidactylus geckos in Peninsular India[J],2020,142.
APA	Lajmi, Aparna,&Karanth, Praveen K..(2020).Eocene-Oligocene cooling and the diversification of Hemidactylus geckos in Peninsular India.MOLECULAR PHYLOGENETICS AND EVOLUTION,142.
MLA	Lajmi, Aparna,et al."Eocene-Oligocene cooling and the diversification of Hemidactylus geckos in Peninsular India".MOLECULAR PHYLOGENETICS AND EVOLUTION 142(2020).