Geographic mosaic of selection by avian predators on hindwing warning colour in a polymorphic aposematic moth
Rönkä, K., Valkonen, J. K., Nokelainen, O., Rojas, B., Gordon, S., Burdfield‐Steel, E., & Mappes, J. (2020). Geographic mosaic of selection by avian predators on hindwing warning colour in a polymorphic aposematic moth. Ecology Letters, 23(11), 1654-1663. https://doi.org/10.1111/ele.13597
Julkaistu sarjassaEcology Letters
OppiaineEvoluutiotutkimus (huippuyksikkö)Ekologia ja evoluutiobiologiaBiologisten vuorovaikutusten huippututkimusyksikköCentre of Excellence in Evolutionary ResearchEcology and Evolutionary BiologyCentre of Excellence in Biological Interactions Research
© 2020 The Authors. Ecology Letters published by John Wiley & Sons Ltd.
Warning signals are predicted to develop signal monomorphism via positive frequency‐dependent selection (+FDS) albeit many aposematic systems exhibit signal polymorphism. To understand this mismatch, we conducted a large‐scale predation experiment in four countries, among which the frequencies of hindwing warning coloration of the aposematic moth, Arctia plantaginis, differ. Here we show that selection by avian predators on warning colour is predicted by local morph frequency and predator community composition. We found +FDS to be the strongest in monomorphic Scotland and lowest in polymorphic Finland, where the attack risk of moth morphs depended on the local avian community. +FDS was also found where the predator community was the least diverse (Georgia), whereas in the most diverse avian community (Estonia), hardly any models were attacked. Our results support the idea that spatial variation in predator communities alters the strength or direction of selection on warning signals, thus facilitating a geographic mosaic of selection. ...
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Rahoitusohjelmat(t)Akatemiaprofessorin tutkimuskulut, SA; Huippuyksikkörahoitus, SA
Lisätietoja rahoituksestaThis study was funded by the Academy of Finland (Projects 284666 and 320438 to JM).
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Evolution of signal diversity : predator-prey interactions and the maintenance of warning colour polymorphism in the wood tiger moth Arctia plantaginis Rönkä, Katja (University of Jyväskylä, 2017)Aposematic organisms avoid predation by advertising defences with warning signals. The theory of aposematism predicts warning signal uniformity, yet variation in warning coloration is widespread. The chemically defended ...
Gordon, Swanne P.; Burdfield-Steel, Emily; Kirvesoja, Jimi; Mappes, Johanna (University of Chicago Press, 2021)Polymorphic warning signals in aposematic systems are enigmatic because predator learning should favor the most common form, creating positive frequency-dependent survival. However, many populations exhibit variation in ...
Many forms of the wood tiger moth (Parasemia plantaginis) : selective heterogeneity favours polymorphic warning signals Nokelainen, Ossi (University of Jyväskylä, 2013)
Geographic variation in the warning signals of the wood tiger moth (Parasemia plantaginis; Arctiidae) Hegna, Robert (University of Jyväskylä, 2013)
Rönkä, Katja; De Pasqual, Chiara; Mappes, Johanna; Gordon, Swanne; Rojas Zuluaga, Bibiana (Elsevier Ltd., 2018)Local warning colour polymorphism, frequently observed in aposematic organisms, is evolutionarily puzzling. This is because variation in aposematic signals is expected to be selected against due to predators' difficulties ...