Original data for article: Weak warning signals can persist in the absence of gene flow
Lawrence, J. P.‡, Rojas, B.‡, Fouquet, A., Mappes, J., Blanchette , A., Saporito, R., Bosque, R. J., Courtois, E., & Noonan, B. P. 2019. (‡Equal contribution): Original data for article: Weak warning signals can persist in the absence of gene flow - JYX, University of Jyväskylä
© Justin P. Lawrence, Bibiana Rojas, Antoine Fouquet, Johanna Mappes, Annelise Blanchette, Ralph Saporito, R.J. Bosque, Elodie Courtois, Brice P. Noonan and University of Jyväskylä and University of Mississippi
Aposematic organisms couple conspicuous warning signals with a secondary defense to deter predators from attacking. Novel signals of aposematic prey are expected to be selected against due to positive frequency-dependent selection. How, then, can novel phenotypes persist after they arise, and why do so many aposematic species exhibit intrapopulation signal variability? Using a polytypic poison frog (Dendrobates tinctorius), we explored the forces of selection on variable aposematic signals using two phenotypically distinct (white, yellow) populations. Contrary to expectations, local phenotype was not always better protected compared to novel phenotypes in either population; in the white population, the novel phenotype evoked greater avoidance in natural predators. Despite having a lower quantity of alkaloids, the skin extracts from yellow frogs provoked higher aversive reactions by birds than white frogs in the laboratory, though both populations differed from controls. Likewise, predators learned to avoid the yellow signal faster than the white signal, and generalized their learned avoidance of yellow but not white. We propose that signals that are easily learned and broadly generalized can protect rare, novel signals, and weak warning signals (i.e., signals with poor efficacy and/or poor defense) can persist when gene flow among populations, as in this case, is limited. This provides a mechanism for the persistence of intrapopulation aposematic variation, a likely precursor to polytypism and driver of speciation. ...
PublisherUniversity of Jyväskylä, Open Science Centre. email@example.com
Please see alsohttps://doi.org/10.1073/pnas.1901872116
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Lawrence, J. P.; Rojas, Bibiana; Fouquet, Antoine; Mappes, Johanna; Blanchette, Annelise; Saporito, Ralph A.; Bosque, Renan Janke; Courtois, Elodie A.; Noonan, Brice P. (National Academy of Sciences, 2019)Aposematic organisms couple conspicuous warning signals with a secondary defense to deter predators from attacking. Novel signals of aposematic prey are expected to be selected against due to positive frequency-dependent ...
Evolutionary constraints of warning signals : a genetic trade-off between the efficacy of larval and adult warning coloration can maintain variation in signal expression Lindstedt, Carita; Schroderus, Eero; Lindström, Leena; Mappes, Tapio; Mappes, Johanna (Wiley-Blackwell Publishing Ltd.; Society for the Study of Evolution, 2016)To predict evolutionary responses of warning signals under selection, we need to determine the inheritance pattern of the signals, and how they are genetically correlated with other traits contributing to fitness. Furthermore, ...
Research data of an article: "Evolutionary constraints of warning signals: a genetic trade-off between the efficacy of larval and adult warning coloration can maintain variation in signal expression" Lindstedt, C.; Schroderus, E.; Lindström, L.; Mappes, T.; Mappes, J. (University of Jyväskylä, 2016)
Evaluating the potential for evolutionary mismatch in Batesian mimics : a case study in the endangered Smooth Snake (Coronella austriaca) Valkonen, Janne; Mäkelä, Anni; Mappes, Johanna; Lopez Sepulcre, Andres (Wiley-Blackwell Publishing, Inc., 2018)Many harmless organisms gain a survival advantage by mimicking venomous species. This is the case of the endangered smooth snake (Coronella austriaca), which mimics venomous vipers. Although this may protect the smooth ...
Why aren't warning signals everywhere? : On the prevalence of aposematism and mimicry in communities Kikuchi, David W.; Herberstein, Marie E.; Barfield, Michael; Holt, Robert D.; Mappes, Johanna (Wiley-Blackwell, 2021)Warning signals are a striking example of natural selection present in almost every ecological community – from Nordic meadows to tropical rainforests, defended prey species and their mimics ward off potential predators ...