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Dryad

Data from: A stabilizing eco-evolutionary feedback loop in the wild

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Jun 15, 2023 version files 2.80 KB

Abstract

Eco-evolutionary dynamics are predicted to involve feedback loops, where ecological changes driven by rapid evolution feed back to shape further evolution. However, direct experimental evidence for such loops in the wild is lacking. Here, we show that eco-evolutionary dynamics in a plant-feeding arthropod community involve a negative feedback loop. Specifically, adaptation in cryptic coloration in an abundant stick-insect species mediates bird predation, with local maladaptation increasing predation. In turn, the abundance of arthropods is reduced by predation. Here, we experimentally manipulate arthropod abundance to show that these community-level changes feedback to affect stick-insect evolution. Specifically, low arthropod abundance increases the strength of selection on crypsis, increasing local adaptation of stick insects in a negative feedback loop. Our results suggest that eco-evolutionary feedbacks are able to stabilize complex systems by preventing consistent directional change and therefore increasing resilience.