气候变化领域集成服务门户(CCPortal): The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal

CCPortal

DOI	10.1111/ele.13436
	The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal
	Martinig A.R.; McAdam A.G.; Dantzer B.; Lane J.E.; Coltman D.W.; Boutin S.
发表日期	2020
ISSN	1461023X
卷号	23 期号:3
英文摘要	Dispersal is nearly universal; yet, which sex tends to disperse more and their success thereafter depends on the fitness consequences of dispersal. We asked if lifetime fitness differed between residents and immigrants (successful between-population dispersers) and their offspring using 29 years of monitoring from North American red squirrels (Tamiasciurus hudsonicus) in Canada. Compared to residents, immigrant females had 23% lower lifetime breeding success (LBS), while immigrant males had 29% higher LBS. Male immigration and female residency were favoured. Offspring born to immigrants had 15–43% lower LBS than offspring born to residents. We conclude that immigration benefitted males, but not females, which appeared to be making the best of a bad lot. Our results are in line with male-biased dispersal being driven by local mate competition and local resource enhancement, while the intergenerational cost to immigration is a new complication in explaining the drivers of sex-biased dispersal. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Competition; cooperation; dispersal; fitness; inbreeding; kin selection; local resource enhancement; philopatry; sex-biased dispersal; Tamiasciurus hudsonicus
语种	英语
scopus关键词	Tamiasciurus hudsonicus; breeding; Canada; female; human; male; migrant; reproduction; Breeding; Canada; Emigrants and Immigrants; Female; Humans; Male; Reproduction
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120934
作者单位	Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada; Department of Integrative Biology, University of Guelph, Guelph, ON, Canada; Department of Psychology, University of Michigan, Ann Arbor, MI, United States; Department of Ecology & Evolutionary Biology, University of Michigan, Ann Arbor, MI, United States; Department of Biology, University of Saskatchewan, Saskatoon, SK, Canada
推荐引用方式 GB/T 7714	Martinig A.R.,McAdam A.G.,Dantzer B.,et al. The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal[J],2020,23(3).
APA	Martinig A.R.,McAdam A.G.,Dantzer B.,Lane J.E.,Coltman D.W.,&Boutin S..(2020).The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal.Ecology Letters,23(3).
MLA	Martinig A.R.,et al."The new kid on the block: immigrant males win big whereas females pay fitness cost after dispersal".Ecology Letters 23.3(2020).