Phenotypic plasticity of nest timing in a post-glacial landscape: how do reptiles adapt to seasonal time constraints?

Phenotypic plasticity of nest timing in a post-glacial landscape: how do reptiles adapt to seasonal time constraints?

Life histories evolve in response to constraints on the time available for growth and development. Nesting date and its plasticity in response to spring temperature may therefore be important components of fitness in oviparous ectotherms near their northern range limit, as reproducing early provides...

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Veröffentlicht in:Ecology. - Duke University Press. - 98(2017), 2, Seite 512-524
1. Verfasser: Edge, Christopher B. (VerfasserIn)
Weitere Verfasser: Rollinson, Njal, Brooks, Ronald J., Congdon, Justin D., Iverson, John B., Janzen, Fredric J., Litzgus, Jacqueline D.
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Ecology
Schlagworte:Biological sciences Behavioral sciences
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100 1 |a Edge, Christopher B.  |e verfasserin  |4 aut 
245 1 0 |a Phenotypic plasticity of nest timing in a post-glacial landscape: how do reptiles adapt to seasonal time constraints? 
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520 |a Life histories evolve in response to constraints on the time available for growth and development. Nesting date and its plasticity in response to spring temperature may therefore be important components of fitness in oviparous ectotherms near their northern range limit, as reproducing early provides more time for embryos to complete development before winter. We used data collected over several decades to compare air temperature and nest date plasticity in populations of painted turtles and snapping turtles from a relatively warm environment (southeastern Michigan) near the southern extent of the last glacial maximum to a relatively cool environment (central Ontario) near the northern extent of post-glacial recolonization. For painted turtles, population-level differences in reaction norm elevation for two phenological traits were consistent with adaptation to time constraints, but no differences in reaction norm slopes were observed. For snapping turtle populations, the difference in reaction norm elevation for a single phenological trait was in the opposite direction of what was expected under adaptation to time constraints, and no difference in reaction norm slope was observed. Finally, among-individual variation in individual plasticity for nesting date was detected only in the northern population of snapping turtles, suggesting that reaction norms are less canalized in this northern population. Overall, we observed evidence of phenological adaptation, and possibly maladaptation, to time constraints in long-lived reptiles. Where present, (mal) adaptation occurred by virtue of differences in reaction norm elevation, not reaction norm slope. Glacial history, generation time, and genetic constraint may all play an important role in the evolution of phenological timing and its plasticity in long-lived reptiles. 
540 |a © 2017 The Ecological Society of America 
650 4 |a Biological sciences  |x Biology  |x Zoology  |x Animals  |x Reptiles  |x Turtles 
650 4 |a Behavioral sciences  |x Ethology  |x Animal behavior  |x Habitat selection  |x Animal nesting 
650 4 |a Biological sciences  |x Biology  |x Zoology  |x Animals  |x Reptiles  |x Turtles  |x Snapping turtles 
650 4 |a Biological sciences  |x Biology  |x Genetics  |x Population genetics  |x Quantitative genetics  |x Phenotypic variation  |x Phenotypic plasticity 
650 4 |a Biological sciences  |x Biology  |x Genetics  |x Population genetics  |x Ecological genetics 
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650 4 |a Biological sciences  |x Biology  |x Genetics  |x Phenotypes  |x Phenotypic traits 
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700 1 |a Rollinson, Njal  |e verfasserin  |4 aut 
700 1 |a Brooks, Ronald J.  |e verfasserin  |4 aut 
700 1 |a Congdon, Justin D.  |e verfasserin  |4 aut 
700 1 |a Iverson, John B.  |e verfasserin  |4 aut 
700 1 |a Janzen, Fredric J.  |e verfasserin  |4 aut 
700 1 |a Litzgus, Jacqueline D.  |e verfasserin  |4 aut 
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773 1 8 |g volume:98  |g year:2017  |g number:2  |g pages:512-524 
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