The enrichment paradox in adaptive radiations: Emergence of predators hinders diversification in resource rich environments

Chaparro-Pedraza, P. Catalina; Roth, Gregory; Seehausen, Ole (2022). The enrichment paradox in adaptive radiations: Emergence of predators hinders diversification in resource rich environments. Ecology Letters, 25(4), pp. 802-813. Wiley-Blackwell Publishing 10.1111/ele.13955

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Adaptive radiations are known for rapid niche diversification in response to ecological
opportunity. While most resources usually exist prior to adaptive radiation, novel niches associated with novel resources can be created as a clade diversifies. For example, in African lake cichlid radiations some species prey upon other species of the clade (intraclade consumers). Using a trait-based eco-evolutionary model, we investigate the evolution of intraclade consumers in adaptive radiations and the effect of this novel trophic interaction on the diversification process of the radiating clade. We find that the evolutionary emergence of intraclade consumers halts the diversification processes of other ecomorphs as a result of increased top-down control of density. Because high productivity enables earlier evolution of intraclade consumers, highly productive environments come to harbour less species-rich radiations than comparable radiations in less productive environments.
Our results reveal how macroevolutionary and community patterns can emerge from ecological and microevolutionary processes.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE)
08 Faculty of Science > Department of Biology > Institute of Ecology and Evolution (IEE) > Aquatic Ecology

UniBE Contributor:

Chaparro Pedraza, Perla Catalina, Seehausen, Ole

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

1461-023X

Publisher:

Wiley-Blackwell Publishing

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

04 Feb 2022 12:06

Last Modified:

05 Dec 2022 16:04

Publisher DOI:

10.1111/ele.13955

PubMed ID:

35032146

BORIS DOI:

10.48350/164559

URI:

https://boris.unibe.ch/id/eprint/164559

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