DOI: 10.1111/gcb.12085
论文题名: Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon
作者: Piou C. ; Prévost E.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 3 起始页码: 711
结束页码: 723
语种: 英语
英文关键词: Diadromous fish
; Ecogenetic modelling
; Evolutionary demography
; Extinction risk
; Life-history strategies
; Phenotypic plasticity
; Population dynamics
; River flow management
; Salmo salar
Scopus关键词: fresh water
; sea water
; climate change
; climate effect
; demography
; ecosystem modeling
; environmental effect
; environmental stress
; extinction risk
; life history
; phenotypic plasticity
; population dynamics
; population migration
; river flow
; salmonid
; water temperature
; animal
; article
; climate change
; female
; genetics
; growth, development and aging
; male
; molecular evolution
; probability
; salmon
; species extinction
; temperature
; Animals
; Climate Change
; Evolution, Molecular
; Extinction, Biological
; Female
; Fresh Water
; Male
; Probability
; Salmon
; Seawater
; Temperature
; Southern Europe
; Pisces
; Salmo salar
英文摘要: Facing climate change (CC), species are prone to multiple modifications in their environment that can lead to extinction, migration or adaptation. Identifying the role and interplay of different potential stressors becomes a key question. Anadromous fishes will be exposed to both river and oceanic habitat changes. For Atlantic salmon, the river water temperature, river flow and oceanic growth conditions appear as three main stressing factors. They could act on population dynamics or as selective forces on life-history pathways. Using an individual-based demo-genetic model, we assessed the effects of these factors (1) to compare risks of extinction resulting from CC in river and ocean, and (2) to assess CC effects on life-history pathways including the evolution of underlying genetic control of phenotypic plasticity. We focused on Atlantic salmon populations from Southern Europe for a time horizon of three decades. We showed that CC in river alone should not lead to extinction of Southern European salmon populations. In contrast, the reduced oceanic growth appeared as a significant threat for population persistence. An increase in river flow amplitude increased the risk of local extinction in synergy with the oceanic effects, but river temperature rise reduced this risk. In terms of life-history modifications, the reduced oceanic growth increased the age of return of individuals through plastic and genetic responses. The river temperature rise increased the proportion of sexually mature parr, but the genetic evolution of the maturation threshold lowered the maturation rate of male parr. This was identified as a case of environmentally driven plastic response that masked an underlying evolutionary response of plasticity going in the opposite direction. We concluded that to counteract oceanic effects, river flow management represented the sole potential force to reduce the extinction probability of Atlantic salmon populations in Southern Europe, although this might not impede changes in migration life history. © 2012 Blackwell Publishing Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62519
Appears in Collections: 影响、适应和脆弱性
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作者单位: INRA, UMR 1224 ECOBIOP, Aquapôle, Quartier Ibarron, Saint-Pée sur Nivelle 64310, France; Pau and Pays Adour University, UFR Sciences et Techniques Côte Basque, Campus Montaury, Anglet, 64600, France; CIRAD, UPR Bioagresseurs analyse et maîtrise du risque, Montpellier, F-34398, France
Recommended Citation:
Piou C.,Prévost E.. Contrasting effects of climate change in continental vs. oceanic environments on population persistence and microevolution of Atlantic salmon[J]. Global Change Biology,2013-01-01,19(3)