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DOI	10.1111/ele.12607
	Costs of reproduction can explain the correlated evolution of semelparity and egg size: Theory and a test with salmon
	Kindsvater H.K.; Braun D.C.; Otto S.P.; Reynolds J.D.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:6
英文摘要	Species' life history traits, including maturation age, number of reproductive bouts, offspring size and number, reflect adaptations to diverse biotic and abiotic selection pressures. A striking example of divergent life histories is the evolution of either iteroparity (breeding multiple times) or semelparity (breed once and die). We analysed published data on salmonid fishes and found that semelparous species produce larger eggs, that egg size and number increase with salmonid body size among populations and species and that migratory behaviour and parity interact. We developed three hypotheses that might explain the patterns in our data and evaluated them in a stage-structured modelling framework accounting for different growth and survival scenarios. Our models predict the observation of small eggs in iteroparous species when egg size is costly to maternal survival or egg number is constrained. By exploring trait co-variation in salmonids, we generate new hypotheses for the evolution of trade-offs among life history traits. © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Costs of reproduction; Demography; Iteroparity; Life history theory; Offspring size; Salmon; Semelparity
学科领域	Pisces; Salmonidae; animal; biological model; body size; clutch size; evolution; female; ovum; physiology; reproduction; salmonine; Animals; Biological Evolution; Body Size; Clutch Size; Female; Models, Biological; Ovum; Reproduction; Salmon
语种	英语
scopus关键词	Pisces; Salmonidae; animal; biological model; body size; clutch size; evolution; female; ovum; physiology; reproduction; salmonine; Animals; Biological Evolution; Body Size; Clutch Size; Female; Models, Biological; Ovum; Reproduction; Salmon
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/118541
作者单位	Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; InStream Fisheries Research Inc., Vancouver, BC V5M 4V8, Canada; Biodiversity Research Centre, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Kindsvater H.K.,Braun D.C.,Otto S.P.,et al. Costs of reproduction can explain the correlated evolution of semelparity and egg size: Theory and a test with salmon[J],2016,19(6).
APA	Kindsvater H.K.,Braun D.C.,Otto S.P.,&Reynolds J.D..(2016).Costs of reproduction can explain the correlated evolution of semelparity and egg size: Theory and a test with salmon.Ecology Letters,19(6).
MLA	Kindsvater H.K.,et al."Costs of reproduction can explain the correlated evolution of semelparity and egg size: Theory and a test with salmon".Ecology Letters 19.6(2016).