ArticleScience advances2022
Invasive chameleons released from predation display more conspicuous colors.
Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 23 citations in OpenAlex.
- Color change, background choice, and camouflage in a nocturnal treefrog: implications for circadian adaptation.Zoological research · 2026Article
- The Geographical Variation of Colour Change in the Arabian Killifish (Ecology and evolution · 2026Article
- Flap-necked chameleons change colour to match their background.Biology letters · 2025Article
- Embedding information flows within ecological networks.Nature ecology & evolution · 2025Article
- Efficient and Highly Continuous Chromosome-Level Genome Assembly of the First Chameleon Genome.Genome biology and evolution · 2023Article
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Authors and funding
6 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Conspicuous social and sexual signals are predicted to experience pronounced character release when natural selection via predation is relaxed. However, we have few good examples of this phenomenon in the wild and none in species with dynamic color change. Here, we show that Jackson's chameleons inadvertently introduced from Kenya to Hawaii (Oahu), where there are no coevolved, native lizard predators, experienced pronounced character release of color signals. Hawaiian chameleons displayed more conspicuous social color signals than Kenyan chameleons during male contests and courtship, were less cryptic in response to bird and snake predators, and showed greater change between display and antipredator color states. Hawaiian chameleon display colors were also more conspicuous in their local than ancestral habitats, consistent with local adaptation of social signals. These results demonstrate that relaxed predation pressure can result in character release of dynamic social signals in introduced species experiencing strong sexual selection.
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Registered trials
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