Abstract

To date, all altered patterns of seasonal interactions observed in insects, birds, amphibians, and plants associated with global warming during the latter half of the 20th century are explicable as variable expressions of plastic phenotypes. Over the last 30 years, the genetically controlled photoperiodic response of the pitcher-plant mosquito, Wyeomyia smithii , has shifted toward shorter, more southern daylengths as growing seasons have become longer. This shift is detectable over a time interval as short as 5 years. Faster evolutionary response has occurred in northern populations where selection is stronger and genetic variation is greater than in southern populations. W. smithii represents an example of actual genetic differentiation of a seasonality trait that is consistent with an adaptive evolutionary response to recent global warming.

Keywords

BiologyTraitGlobal warmingEcologyGenetic variationAdaptation (eye)Phenotypic plasticityAdaptive evolutionSelection (genetic algorithm)Climate changeEvolutionary biologyZoologyGeneticsGene

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Year
2001
Type
article
Volume
98
Issue
25
Pages
14509-14511
Citations
616
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William E. Bradshaw, Christina Holzapfel (2001). Genetic shift in photoperiodic response correlated with global warming. Proceedings of the National Academy of Sciences , 98 (25) , 14509-14511. https://doi.org/10.1073/pnas.241391498

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DOI
10.1073/pnas.241391498