Comment on "Precipitation drives global variation in natural selection".
Level V
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- Record sourced from PubMed, PMID 29371441.
- Also identified by DOI 10.1126/science.aan5028.
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Abstract
Siepielski <i>et al</i> (Reports, 3 March 2017, p. 959) claim that "precipitation drives global variation in natural selection." This conclusion is based on a meta-analysis of the relationship between climate variables and natural selection measured in wild populations of invertebrates, plants, and vertebrates. Three aspects of this analysis cause concern: (i) lack of within-year climate variables, (ii) low and variable estimates of covariance relationships across taxa, and (iii) a lack of mechanistic explanations for the patterns observed; association is not causation.
Medical subject headings
- Climate
- Selection, Genetic