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Climate warming promotes pesticide resistance through expanding overwintering range of a global pest
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Climate warming promotes pesticide resistance through expanding overwintering range of a global pest
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Journal Article
Climate warming promotes pesticide resistance through expanding overwintering range of a global pest
2021
Overview
Climate change has the potential to change the distribution of pests globally and their resistance to pesticides, thereby threatening global food security in the 21st century. However, predicting where these changes occur and how they will influence current pest control efforts is a challenge. Using experimentally parameterised and field-tested models, we show that climate change over the past 50 years increased the overwintering range of a global agricultural insect pest, the diamondback moth (
Plutella xylostella
), by ~2.4 million km
2
worldwide. Our analysis of global data sets revealed that pesticide resistance levels are linked to the species’ overwintering range: mean pesticide resistance was 158 times higher in overwintering sites compared to sites with only seasonal occurrence. By facilitating local persistence all year round, climate change can promote and expand pesticide resistance of this destructive species globally. These ecological and evolutionary changes would severely impede effectiveness of current pest control efforts and potentially cause large economic losses.
Climate-driven range shifts may affect pesticide resistance. Here, the authors analyse experimentally parameterised and field-tested models to show that a cosmopolitan insect pest, the diamondback moth, is acquiring resistance against local pesticides through expanding overwintering range.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
