Differential Survival between Visual Environments Supports a Role of Divergent Sensory Drive in Cichlid Fish Speciation

Maan, Martine E.; Seehausen, Ole; Groothuis, Ton G. G. (2017). Differential Survival between Visual Environments Supports a Role of Divergent Sensory Drive in Cichlid Fish Speciation. American naturalist, 189(1), pp. 78-85. University of Chicago Press 10.1086/689605

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Identifying the selective forces that initiate ecological speciation is a major challenge in evolutionary biology. Sensory drive has been implicated in speciation in various taxa, largely based on phenotype-environment correlations and signatures of selection in sensory genes. Here, we present a reciprocal transplant experiment revealing species differences in performance in alternative visual environments, consistent with speciation by divergent sensory drive. The closely related cichlids Pundamilia pundamilia and Pundamilia nyererei inhabit different visual environments in Lake Victoria and show associated differences in visual system properties. Mimicking the two light environments in the laboratory, we find a substantial reduction in survival of both species when reared in the other species’ visual environment. This implies that the observed differences in Pundamilia color vision are indeed adaptive and substantiates the implicit assumption in sensory drive speciation models that divergent environmental selection is strong enough to drive divergence in sensory properties.

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:

Maan, Martine and Seehausen, Ole

Subjects:

500 Science > 570 Life sciences; biology

ISSN:

0003-0147

Publisher:

University of Chicago Press

Language:

English

Submitter:

Marcel Häsler

Date Deposited:

07 Feb 2017 16:15

Last Modified:

07 Feb 2017 16:15

Publisher DOI:

10.1086/689605

PubMed ID:

28035885

BORIS DOI:

10.7892/boris.91000

URI:

https://boris.unibe.ch/id/eprint/91000

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