Explaining life history variation in a changing climate across a species' range

被引:23
作者
Neuheimer, Anna B. [1 ]
MacKenzie, Brian R. [1 ]
机构
[1] Tech Univ Denmark DTU Aqua, Natl Inst Aquat Resources, Ctr Macroecol Evolut & Climate, DK-2920 Charlottenlund, Denmark
基金
新加坡国家研究基金会;
关键词
Atlantic cod; climate change; evolutionary biology; Gadus morhua; macroecology; North Atlantic Ocean; phenology; temperature; COD GADUS-MORHUA; HADDOCK MELANOGRAMMUS-AEGLEFINUS; SIZE-AT-AGE; GROWING DEGREE-DAY; ATLANTIC COD; SEXUAL-MATURATION; COUNTERGRADIENT VARIATION; ADAPTIVE EVOLUTION; SPAWNING TIME; GROWTH;
D O I
10.1890/13-2370.1
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Timing of reproduction greatly influences offspring success and resulting population production. Explaining and predicting species' dynamics necessitates disentangling the intrinsic (genotypic) and extrinsic (climatic) factors controlling reproductive timing. Here we explore temporal and spatial changes in spawning time for 21 populations of Atlantic cod (Gadus morhua) across the species' range (40 degrees to 80 degrees N). We estimate spawning time using a physiologically relevant metric that includes information on fish thermal history (degree-days, DD). First, we estimate spawning DD among years (within populations) to show how recent changes in spawning time can be explained by local changes in temperature. Second, we employ spawning DD to identify temperature-independent trends in spawning time among populations that are consistent with parallel adaptive evolution and the evolutionary history of the species. Finally, we use our results to estimate spawning time under future climate regimes, and discuss the implications for cod ecology across the species' range.
引用
收藏
页码:3364 / 3375
页数:12
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