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Cited by 278

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Experimental evidence that predation promotes divergence in adaptive radiation

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Nosil, Patrik, Crespi, Bernard J.·2006·Proceedings of the National Academy of Sciences

Abstract

Adaptive radiation is the evolution of ecological and phenotypic diversity within a rapidly multiplying lineage. Recent studies have identified general patterns in adaptive radiation and inferred that resource competition is a primary factor driving phenotypic divergence. The role and importance of other processes, such as predation, remains controversial. Here we use Timema stick insects to show that adaptive radiation can be driven by divergent selection from visual predators. Ecotypes using different host-plant species satisfy criteria for the early stages of adaptive radiation and differ in quantitative aspects of color, color pattern, body size, and body shape. A manipulative field experiment demonstrates that the direction and strength of divergent selection on these traits is strongly positively correlated with the direction and magnitude of their population divergence in nature but only when selection is estimated in the presence of predation. Our results indicate that both competition and predation may commonly serve as mechanisms of adaptive radiation.

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Metadata

Authors
Nosil, P., & Crespi, B. J.
Venue
Proceedings of the National Academy of Sciences
Published
2006-06-13
Volume
103
Issue
24
Pages
9090-9095
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1983531729
Cited by
278
References
36
FWCI
19.00
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Experimental evidence that predation promotes divergence in adaptive radiation. https://app.cochat.ai/papers/10.1073/pnas.0601575103
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Nosil, P., & Crespi, B. J. (2006). Experimental evidence that predation promotes divergence in adaptive radiation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0601575103

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