干旱区生态环境知识资源中心(Arid): Patterns of Genetic Diversity and Gene Flow Associated With an Aridity Gradient in Populations of Common Mole-rats, Cryptomys hottentotus hottentotus

Arid

DOI	10.1093/gbe/evae144
	Patterns of Genetic Diversity and Gene Flow Associated With an Aridity Gradient in Populations of Common Mole-rats, Cryptomys hottentotus hottentotus
	Merchant, Hana N.; Ivanova, Anastasia; Hart, Daniel W.; Garcia, Cristina; Bennett, Nigel C.; Portugal, Steven J.; Faulkes, Chris G.
通讯作者	Merchant, HN
来源期刊	GENOME BIOLOGY AND EVOLUTION
ISSN	1759-6653
出版年	2024
卷号	16 期号:7
英文摘要	Genetic adaptation is the change of a population toward a phenotype that best fits the present ecological conditions of the environment it inhabits. As environmental conditions change, allele frequencies shift, resulting in different populations of the same species possessing genetic variation and divergent phenotypes. Cooperatively breeding common mole-rats (Cryptomys hottentotus hottentotus) inhabit environments along an aridity gradient in South Africa, which provides an opportunity for local genetic adaptations to occur. Using one mitochondrial gene (cytochrome b) and 3,540 SNP loci across the whole genome, we determined the phylogenetic relationship, population structure and genetic diversity of five populations of C. h. hottentotus located along an aridity gradient. Mitochondrial data identified population-specific clades that were less distinct in the two mesic populations, potentially indicating historical or recent gene flow, or the retention of ancestral haplotypes. Arid and semi-arid populations formed a distinct cluster from the non-arid populations. Genetic diversity and gene flow were higher in arid-dwelling individuals, suggesting greater connectivity and interactions between colonies in arid regions in comparison to mesic ones. Using an Aridity Index, we determined that isolation by environment, rather than isolation by geographical distance, best explains the genetic distance between the populations. Further analyses using target loci may determine if there are differing underlying genetic adaptations among populations of C. h. hottentotus. These analyses could help unravel population differences in response to environmental factors within a subspecies of bathyergid mole-rat and determine the adaptive capacity of this small nonmigratory subterranean rodent species in response to aridification in the face of climate change.
英文关键词	arid-dwelling mammals Bathyergidae environmental adaptation genetic adaptation genome-wide variation landscape genomics
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:001272685900001
WOS关键词	ULTRACONSERVED ELEMENTS ; SOCIAL EVOLUTION ; BATHYERGIDAE ; SOFTWARE ; RODENTIA ; PACKAGE ; DESERT ; DNA ; HETEROZYGOSITY ; EUSOCIALITY
WOS类目	Evolutionary Biology ; Genetics & Heredity
WOS研究方向	Evolutionary Biology ; Genetics & Heredity
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403918
推荐引用方式 GB/T 7714	Merchant, Hana N.,Ivanova, Anastasia,Hart, Daniel W.,et al. Patterns of Genetic Diversity and Gene Flow Associated With an Aridity Gradient in Populations of Common Mole-rats, Cryptomys hottentotus hottentotus[J],2024,16(7).
APA	Merchant, Hana N..,Ivanova, Anastasia.,Hart, Daniel W..,Garcia, Cristina.,Bennett, Nigel C..,...&Faulkes, Chris G..(2024).Patterns of Genetic Diversity and Gene Flow Associated With an Aridity Gradient in Populations of Common Mole-rats, Cryptomys hottentotus hottentotus.GENOME BIOLOGY AND EVOLUTION,16(7).
MLA	Merchant, Hana N.,et al."Patterns of Genetic Diversity and Gene Flow Associated With an Aridity Gradient in Populations of Common Mole-rats, Cryptomys hottentotus hottentotus".GENOME BIOLOGY AND EVOLUTION 16.7(2024).