Strong phenotypic plasticity limits potential for evolutionary responses to climate change
Vicencio Oostra (),
Marjo Saastamoinen,
Bas J. Zwaan and
Christopher W. Wheat
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Vicencio Oostra: University College London
Marjo Saastamoinen: University of Helsinki
Bas J. Zwaan: Wageningen University
Christopher W. Wheat: Stockholm University
Nature Communications, 2018, vol. 9, issue 1, 1-11
Abstract:
Abstract Phenotypic plasticity, the expression of multiple phenotypes from one genome, is a widespread adaptation to short-term environmental fluctuations, but whether it facilitates evolutionary adaptation to climate change remains contentious. Here, we investigate seasonal plasticity and adaptive potential in an Afrotropical butterfly expressing distinct phenotypes in dry and wet seasons. We assess the transcriptional architecture of plasticity in a full-factorial analysis of heritable and environmental effects across 72 individuals, and reveal pervasive gene expression differences between the seasonal phenotypes. Strikingly, intra-population genetic variation for plasticity is largely absent, consistent with specialisation to a particular environmental cue reliably predicting seasonal transitions. Under climate change, deteriorating accuracy of predictive cues will likely aggravate maladaptive phenotype-environment mismatches and increase selective pressures on reaction norms. However, the observed paucity of genetic variation for plasticity limits evolutionary responses, potentially weakening prospects for population persistence. Thus, seasonally plastic species may be especially vulnerable to climate change.
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-03384-9
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DOI: 10.1038/s41467-018-03384-9
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