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The evolution of insect body coloration under changing climates
Susana Clusella-Trullas1, Matthew Nielsen2
1Centre for Invasion Biology, Dept. of Botany and Zoology, Stellenbosch University, Stellenbosch, South Africa.
Current Opinion in Insect Science
|July 7, 2020
Summary
Insect coloration is evolving due to climate change, but disentangling the drivers of this color variation is complex. Understanding these evolutionary responses is crucial for predicting insect adaptation.
Area of Science:
- * Evolutionary biology
- * Climate change science
- * Entomology
Background:
- * Insects are key models for studying color variation and its evolutionary basis.
- * Emerging evidence suggests insect coloration is adapting to rapid climate change.
- * Identifying specific drivers of insect color variation across populations, species, and time remains challenging due to interacting factors.
Purpose of the Study:
- * To outline hypotheses for insect color variation linked to climate.
- * To review evidence for contemporary adaptive evolution of insect color in response to climate change.
- * To discuss factors influencing the evolution of insect color under climate change and propose future research directions.
Main Methods:
- * Review of existing literature on insect color variation and climate change.
- * Analysis of hypotheses linking climatic factors to insect coloration.
- * Discussion of evidence for adaptive evolution and influencing factors.
Main Results:
- * Multiple hypotheses exist for climate-driven insect color variation.
- * Evidence supports contemporary adaptive evolution of insect color in response to climate change.
- * Pigment and structural color evolution can occur independently, impacting gene frequencies and fitness.
Conclusions:
- * Disentangling multiple hypotheses is essential to confirm color variation as an evolutionary response to climate change.
- * Further research is needed to understand the interplay of factors affecting insect color evolution.
- * Understanding insect color adaptation is critical for predicting ecological responses to global warming.
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