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Climate change driven eco-evolutionary process on herbivorous insect outbreak
Yuzu Sakata1, Shunsuke Utsumi2
1Graduate School of Environment and Information Sciences, Yokohama National University, Kanagawa 240-8501, Japan.
Current Opinion in Insect Science
|August 4, 2026
Summary
Climate change impacts herbivorous insect outbreaks by altering insect traits and interactions. Understanding these eco-evolutionary dynamics is crucial for predicting future outbreaks and managing insect populations effectively.
Area of Science:
- Ecology
- Evolutionary Biology
- Climate Science
Background:
- Anthropogenic climate change significantly influences herbivorous insect outbreaks.
- Altered temperature regimes affect insect demography and population dynamics through ecological and evolutionary mechanisms.
- The eco-evolutionary processes regulating insect outbreaks and the impact of climate change on them are not well understood.
Purpose of the Study:
- To review how climate change affects herbivorous insect outbreaks via ecological and evolutionary effects on insect traits.
- To examine climate change impacts on trophic interactions among insects, host plants, and natural enemies.
- To propose that climate-driven changes in insect traits can lead to eco-evolutionary feedback loops, altering outbreak patterns.
Main Methods:
- Literature review synthesizing current research on climate change, insect traits, and population dynamics.
- Analysis of ecological and evolutionary mechanisms influencing herbivorous insect outbreaks.
- Exploration of trophic interactions within insect-plant-enemy systems under climate change.
Main Results:
- Climate change alters insect traits, influencing population demography and outbreak frequency/magnitude.
- Changes in insect traits can generate eco-evolutionary feedback, potentially shifting outbreak modes.
- Trophic interactions are modified by climate change, affecting herbivore dynamics.
Conclusions:
- Climate-driven alterations in insect traits are key drivers of increased outbreak frequency and magnitude.
- Outbreaks may shift in mode due to eco-evolutionary feedbacks, not just intensity.
- Understanding these processes is vital for accurate outbreak forecasting and adaptive management strategies considering evolutionary potential.
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