Campus Units

Ecology, Evolution and Organismal Biology

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

4-2014

Journal or Book Title

Evolution

Volume

68

Issue

4

First Page

1197

Last Page

1206

DOI

10.1111/evo.12325

Abstract

In Batesian mimicry a palatable mimic deceives predators by resembling an unpalatable model. The evolution of Batesian mimicry relies on the visual capabilities of the potential predators, as prey detection provides the selective force driving evolutionary change. We compared the visual capabilities of several potential predators to test predictions stemming from the hypothesis of Batesian mimicry between two salamanders: the model species Notophthalmus viridescens, and polymorphic mimic, Plethodon cinereus. First, we found mimicry to be restricted to coloration, but not brightness. Second, only bird predators appeared able to discriminate between the colors of models and non-mimic P. cinereus. Third, estimates of salamander conspicuousness were background-dependent, corresponding to predictions only for backgrounds against which salamanders are most active. These results support the hypothesis that birds influence the evolution of Batesian mimicry in P. cinereus, as they are the only group examined capable of differentiating N. viridescens and non-mimetic P. cinereus. Additionally, patterns of conspicuousness suggest that selection from predators may drive the evolution of conspicuousness in this system. This study confirms the expectation that the visual abilities of predators may influence the evolution of Batesian mimicry, but the role of conspicuousness may be more complex than previously thought.

Comments

This is the peer reviewed version of the following article: Kraemer, A. C. and Adams, D. C. (2014), Predator Perception of Batesian Mimicry and Conspicuousness in a Salamander. Evolution, 68: 1197–1206, which has been published in final form at DOI: 10.1111/evo.12325. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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