DOI: 10.1073/pnas.2012454117
论文题名: Selection on phenotypic plasticity favors thermal canalization
作者: Svensson E.I. ; Gomez-Llano M. ; Waller J.T.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期: 47 起始页码: 29767
结束页码: 29774
语种: 英语
英文关键词: Canalization
; Insects
; Phenotypic plasticity
; Sexual selection
; Thermal adaptation
Scopus关键词: adult
; article
; body temperature
; climate change
; controlled study
; environmental temperature
; female
; heating
; insect
; latitude
; longevity
; male
; mating success
; natural selection
; nonhuman
; phenotypic plasticity
; reproduction
; sexual selection
; temperature acclimatization
英文摘要: Climate change affects organisms worldwide with profound ecological and evolutionary consequences, often increasing population extinction risk. Climatic factors can increase the strength, variability, or direction of natural selection on phenotypic traits, potentially driving adaptive evolution. Phenotypic plasticity in relation to temperature can allow organisms to maintain fitness in response to increasing temperatures, thereby "buying time" for subsequent genetic adaptation and promoting evolutionary rescue. Although many studies have shown that organisms respond plastically to increasing temperatures, it is unclear if such thermal plasticity is adaptive. Moreover, we know little about how natural and sexual selection operate on thermal reaction norms, reflecting such plasticity. Here, we investigate how natural and sexual selection shape phenotypic plasticity in two congeneric and phenotypically similar sympatric insect species. We show that the thermal optima for longevity and mating success differ, suggesting temperature-dependent trade-offs between survival and reproduction in both sexes. Males in these species have similar thermal reaction norm slopes but have diverged in baseline body temperature (intercepts), being higher for the more northern species. Natural selection favored reduced thermal reaction norm slopes at high ambient temperatures, suggesting that the current level of thermal plasticity is maladaptive in the context of anthropogenic climate change and that selection now promotes thermal canalization and robustness. Our results show that ectothermic animals also at high latitudes can suffer from overheating and challenge the common view of phenotypic plasticity as being beneficial in harsh and novel environments. © 2020 National Academy of Sciences. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163928
Appears in Collections: 气候变化与战略
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作者单位: Svensson, E.I., Department of Biology, Lund University, Lund, SE-223 62, Sweden; Gomez-Llano, M., Department of Biology, Lund University, Lund, SE-223 62, Sweden, Department of Biological Sciences, University of Arkansas, Fayetteville, AR 72701, United States; Waller, J.T., Department of Biology, Lund University, Lund, SE-223 62, Sweden, Global Biodiversity Information Facility, GBIF Secretariat, Copenhagen Ø, DK-2100, Denmark
Recommended Citation:
Svensson E.I.,Gomez-Llano M.,Waller J.T.. Selection on phenotypic plasticity favors thermal canalization[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(47)