liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Coarse dark patterning functionally constrains adaptive shifts from aposematism to crypsis in strawberry poison frogs
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
Uppsala University, Sweden.
Show others and affiliations
2014 (English)In: Evolution, ISSN 0014-3820, E-ISSN 1558-5646, Vol. 68, no 10, 2793-2803 p.Article in journal (Refereed) Published
Abstract [en]

Ecological specialization often requires tight coevolution of several traits, which may constrain future evolutionary pathways and make species more prone to extinction. Aposematism and crypsis represent two specialized adaptations to avoid predation. We tested whether the combined effects of color and pattern on prey conspicuousness functionally constrain or facilitate shifts between these two adaptations. We combined data from 17 natural populations of strawberry poison frogs, Oophaga pumilio with an experimental approach using digitalized images of frogs and chickens as predators. We show that bright coloration often co-occurs with coarse patterning among the natural populations. Dull green frogs with coarse patterning are rare in nature but in the experiment they were as easily detected as bright red frogs suggesting that this trait combination represents a transient evolutionary state toward aposematism. Hence, a gain of either bright color or coarse patterning leads to conspicuousness, but a transition back to crypsis would be functionally constrained in populations with both bright color and coarse patterning by requiring simultaneous changes in two traits. Thus, populations (or species) signaling aposematism by conspicuous color should be less likely to face an evolutionary dead end and more likely to radiate than populations with both conspicuous color and coarse patterning.

Place, publisher, year, edition, pages
Wiley-Blackwell, 2014. Vol. 68, no 10, 2793-2803 p.
Keyword [en]
Adaptive landscape; Dendrobates pumilio; amphibian; aposematism; crypsis; fitness peak shifts; warning signal
National Category
Biological Sciences
URN: urn:nbn:se:liu:diva-111366DOI: 10.1111/evo.12487ISI: 000342904300004PubMedID: 24990085OAI: diva2:755905
Available from: 2014-10-15 Created: 2014-10-15 Last updated: 2014-11-17Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Løvlie, Hanne
By organisation
BiologyThe Institute of Technology
In the same journal
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 73 hits
ReferencesLink to record
Permanent link

Direct link