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Cryptic female Strawberry poison frogs experience elevated predation risk when associating with an aposematic partner
Uppsala university, Uppsala, Sweden.
Uppsala university, Uppsala, Sweden.
Stockholm university, Stockholm, Sweden.
Uppsala university, Uppsalal, Sweden.
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2017 (English)In: Ecology and Evolution, ISSN 2045-7758, E-ISSN 2045-7758, Vol. 7, no 2, 744-750 p.Article in journal (Refereed) Published
Abstract [en]

Population divergence in sexual signals may lead to speciation through prezygotic isolation.

Sexual signals can change solely due to variation in the level of natural selection

acting against conspicuousness. However, directional mate choice (i.e., favoring conspicuousness)

across different environments may lead to gene flow between populations,

thereby delaying or even preventing the evolution of reproductive barriers and

speciation. In this study, we test whether natural selection through predation upon

mate-choosing

females can favor corresponding changes in mate preferences. Our

study system, Oophaga pumilio, is an extremely color polymorphic neotropical frog

with two distinctive antipredator strategies: aposematism and crypsis. The conspicuous

coloration and calling behavior of aposematic males may attract both cryptic and

aposematic females, but predation may select against cryptic females choosing aposematic

males. We used an experimental approach where domestic fowl were encouraged

to find digitized images of cryptic frogs at different distances from aposematic

partners. We found that the estimated survival time of a cryptic frog was reduced

when associating with an aposematic partner. Hence, predation may act as a direct

selective force on female choice, favoring evolution of color assortative mating that, in

turn, may strengthen the divergence in coloration that natural selection has

generated

Place, publisher, year, edition, pages
John Wiley & Sons, 2017. Vol. 7, no 2, 744-750 p.
Keyword [en]
aposematism, assortative mating, crypsis, Oophaga pumilio, predation, sexual selection
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:liu:diva-133920DOI: 10.1002/ece3.2662ISI: 000392075300025OAI: oai:DiVA.org:liu-133920DiVA: diva2:1065414
Note

Funding agencies: Swedish Research Council; ERASMUS; Zochonis Enterprise Fund

Available from: 2017-01-16 Created: 2017-01-16 Last updated: 2017-02-21

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CiteExportLink to record
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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
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Output format
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