Nuclear DNA content correlates with depth, body size, and diversification rate in amphipod crustaceans from ancient Lake Baikal, Russia

doi:10.1139/gen-2016-0128

	Nuclear DNA content correlates with depth, body size, and diversification rate in amphipod crustaceans from ancient Lake Baikal, Russia
	Jeffery, Nicholas W.1,3; Yampolsky, Lev 2; Gregory, T. Ryan 1
刊名	GENOME
	2017-04
卷号	60 期号:4 页码:303-309
关键词	ancient lakes crustaceans C-value flow cytometry genome size speciation
ISSN号	0831-2796
DOI	10.1139/gen-2016-0128
英文摘要	Lake Baikal in Russia is a large, ancient lake that has been the site of a major radiation of amphipod crustaceans. Nearly 400 named species are known in this single lake, and it is thought that many more await description. The size and depth of Lake Baikal, in particular, may have contributed to the radiation of endemic amphipods by providing a large number of microhabitats for species to invade and subsequently experience reproductive isolation. Here we investigate the possibility that large-scale genomic changes have also accompanied diversification in these crustaceans. Specifically, we report genome size estimates for 36 species of Baikal amphipods, and examine the relationship between genome size, body size, and the maximum depths at which the amphipods are found in the lake. Genome sizes ranged nearly 8-fold in this sample of amphipod species, from 2.15 to 16.63 pg, and there were significant, positive, phylogenetically corrected relationships between genome size, body size, maximum depth, and diversification rate among these species. Our results suggest that major genomic changes, including transposable element proliferation, have accompanied speciation that was driven by selection for differences in body size and habitat preference in Lake Baikal amphipods.
资助项目	NSF[1136706]
WOS关键词	IMAGE-ANALYSIS DENSITOMETRY ; GENOME SIZE ; TRANSPOSABLE ELEMENTS ; LARGE PHYLOGENIES ; EVOLUTION ; SPECIATION ; LIFE ; DIVERSITY ; PATTERNS ; COPEPODS
WOS研究方向	Biotechnology & Applied Microbiology ; Genetics & Heredity
语种	英语
出版者	CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
WOS记录号	WOS:000398917100003
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26538]
专题	自然资源部第一海洋研究所
通讯作者	Jeffery, Nicholas W.
作者单位	1.Univ Guelph, Dept Integrat Biol, Guelph, ON N1G 2W1, Canada 2.East Tennessee State Univ, Dept Biol Sci, Johnson City, TN 37614 USA 3.Fisheries & Oceans Canada, Bedford Inst Oceanog, 1 Challenger Dr, Dartmouth, NS, Canada
推荐引用方式 GB/T 7714	Jeffery, Nicholas W.,Yampolsky, Lev,Gregory, T. Ryan. Nuclear DNA content correlates with depth, body size, and diversification rate in amphipod crustaceans from ancient Lake Baikal, Russia[J]. GENOME,2017,60(4):303-309.
APA	Jeffery, Nicholas W.,Yampolsky, Lev,&Gregory, T. Ryan.(2017).Nuclear DNA content correlates with depth, body size, and diversification rate in amphipod crustaceans from ancient Lake Baikal, Russia.GENOME,60(4),303-309.
MLA	Jeffery, Nicholas W.,et al."Nuclear DNA content correlates with depth, body size, and diversification rate in amphipod crustaceans from ancient Lake Baikal, Russia".GENOME 60.4(2017):303-309.