干旱区生态环境知识资源中心(Arid): Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards

Arid

DOI	10.1111/mec.15042
	Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards
	Grundler, Maggie R.1,2,3; Singhal, Sonal 1,2,4; Cowan, Mark A.5; Rabosky, Daniel L.1,2
通讯作者	Grundler, Maggie R.
来源期刊	MOLECULAR ECOLOGY
ISSN	0962-1083
EISSN	1365-294X
出版年	2019
卷号	28 期号:7 页码:1664-1674
英文摘要	Species abundance data are critical for testing ecological theory, but obtaining accurate empirical estimates for many taxa is challenging. Proxies for species abundance can help researchers circumvent time and cost constraints that are prohibitive for long-term sampling. Under simple demographic models, genetic diversity is expected to correlate with census size, such that genome-wide heterozygosity may provide a surrogate measure of species abundance. We tested whether nucleotide diversity is correlated with long-term estimates of abundance, occupancy and degree of ecological specialization in a diverse lizard community from arid Australia. Using targeted sequence capture, we obtained estimates of genomic diversity from 30 species of lizards, recovering an average of 5,066 loci covering 3.6 Mb of DNA sequence per individual. We compared measures of individual heterozygosity to a metric of habitat specialization to investigate whether ecological preference exerts a measurable effect on genetic diversity. We find that heterozygosity is significantly correlated with species abundance and occupancy, but not habitat specialization. Demonstrating the power of genomic sampling, the correlation between heterozygosity and abundance/occupancy emerged from considering just one or two individuals per species. However, genetic diversity does no better at predicting abundance than a single day of traditional sampling in this community. We conclude that genetic diversity is a useful proxy for regional-scale species abundance and occupancy, but a large amount of unexplained variation in heterozygosity suggests additional constraints or a failure of ecological sampling to adequately capture variation in true population size.
英文关键词	heterozygosity Lewontin's paradox species abundance squamates target capture
类型	Article
语种	英语
国家	USA ; Australia
开放获取类型	Bronze, Green Published
收录类别	SCI-E
WOS记录号	WOS:000474808300009
WOS关键词	GENETIC DIVERSITY ; BODY-SIZE ; ABUNDANCE DISTRIBUTIONS ; POSITIVE RELATIONSHIPS ; HABITAT ; PREDICTS ; PATTERNS ; RANGE ; SPECIALIZATION ; DETERMINANTS
WOS类目	Biochemistry & Molecular Biology ; Ecology ; Evolutionary Biology
WOS研究方向	Biochemistry & Molecular Biology ; Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	University of California, Berkeley
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217647
作者单位	1.Univ Michigan, Museum Zool, Ann Arbor, MI 48109 USA; 2.Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA; 3.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; 4.CSU Dominguez Hills, Dept Biol, Carson, CA USA; 5.Conservat & Attract, Dept Biodivers, Kensington, NSW, Australia
推荐引用方式 GB/T 7714	Grundler, Maggie R.,Singhal, Sonal,Cowan, Mark A.,et al. Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards[J]. University of California, Berkeley,2019,28(7):1664-1674.
APA	Grundler, Maggie R.,Singhal, Sonal,Cowan, Mark A.,&Rabosky, Daniel L..(2019).Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards.MOLECULAR ECOLOGY,28(7),1664-1674.
MLA	Grundler, Maggie R.,et al."Is genomic diversity a useful proxy for census population size? Evidence from a species-rich community of desert lizards".MOLECULAR ECOLOGY 28.7(2019):1664-1674.