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Global change, life-history complexity and the potential for evolutionary rescue.

Title: Global change, life-history complexity and the potential for evolutionary rescue.
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Name(s): Marshall, Dustin J, author
Burgess, Scott C, author
Connallon, Tim, author
Type of Resource: text
Genre: Journal Article
Text
Date Issued: 2016-06-30
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Most organisms have complex life cycles, and in marine taxa, larval life-history stages tend to be more sensitive to environmental stress than adult (reproductive) life-history stages. While there are several models of stage-specific adaptation across the life history, the extent to which differential sensitivity to environmental stress (defined here as reductions in absolute fitness across the life history) affects the tempo of adaptive evolution to change remains unclear. We used a heuristic model to explore how commonly observed features associated with marine complex life histories alter a population's capacity to cope with environmental change. We found that increasing the complexity of the life history generally reduces the evolutionary potential of taxa to cope with environmental change. Our model also predicted that genetic correlations in stress tolerance between stages, levels of genetic variance in each stage, and the relative plasticity of different stages, all interact to affect the maximum rate of environmental change that will permit species persistence. Our results suggest that marine organisms with complex life cycles are particularly vulnerable to anthropogenic global change, but we lack empirical estimates of key parameters for most species.
Identifier: FSU_pmch_27695526 (IID), 10.1111/eva.12396 (DOI), PMC5039331 (PMCID), 27695526 (RID), 27695526 (EID), EVA12396 (PII)
Keywords: Evolutionary theory, Life history evolution, Quantitative genetics
Publication Note: This NIH-funded author manuscript originally appeared in PubMed Central at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5039331.
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_pmch_27695526
Owner Institution: FSU
Is Part Of: Evolutionary applications.
1752-4571
Issue: iss. 9, vol. 9

Choose the citation style.
Marshall, D. J., Burgess, S. C., & Connallon, T. (2016). Global change, life-history complexity and the potential for evolutionary rescue. Evolutionary Applications. Retrieved from http://purl.flvc.org/fsu/fd/FSU_pmch_27695526