Social learning within and across predator species reduces attacks on novel aposematic prey

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dc.contributor University of Helsinki, Helsinki Institute of Sustainability Science (HELSUS) en Hämäläinen, Liisa Mappes, Johanna Rowland, Hannah M. Teichmann, Marianne Thorogood, Rose 2020-07-03T13:19:01Z 2020-07-03T13:19:01Z 2020-05
dc.identifier.citation Hämäläinen , L , Mappes , J , Rowland , H M , Teichmann , M & Thorogood , R 2020 , ' Social learning within and across predator species reduces attacks on novel aposematic prey ' , Journal of Animal Ecology , vol. 89 , no. 5 , pp. 1153-1164 . en
dc.identifier.issn 0021-8790
dc.identifier.other PURE: 132793952
dc.identifier.other PURE UUID: 12f9c053-9f80-4de5-aebd-46bd983c3f08
dc.identifier.other RIS: urn:35521E9164C3EE5ECB6B7F1D7C3B3D0E
dc.identifier.other WOS: 000514456900001
dc.identifier.other ORCID: /0000-0001-5010-2177/work/76727179
dc.description.abstract To make adaptive foraging decisions, predators need to gather information about the profitability of prey. As well as learning from prey encounters, recent studies show that predators can learn about prey defences by observing the negative foraging experiences of conspecifics. However, predator communities are complex. While observing heterospecifics may increase learning opportunities, we know little about how social information use varies across predator species. Social transmission of avoidance among predators also has potential consequences for defended prey. Conspicuous aposematic prey are assumed to be an easy target for naive predators, but this cost may be reduced if multiple predators learn by observing single predation events. Heterospecific information use by predators might further benefit aposematic prey, but this remains untested. Here we test conspecific and heterospecific information use across a predator community with wild-caught blue tits (Cyanistes caeruleus) and great tits (Parus major). We used video playback to manipulate social information about novel aposematic prey and then compared birds' foraging choices in 'a small-scale novel world' that contained novel palatable and aposematic prey items. We expected that blue tits would be less likely to use social information compared to great tits. However, we found that both blue tits and great tits consumed fewer aposematic prey after observing a negative foraging experience of a demonstrator. In fact, this effect was stronger in blue tits compared to great tits. Interestingly, blue tits also learned more efficiently from watching conspecifics, whereas great tits learned similarly regardless of the demonstrator species. Together, our results indicate that social transmission about novel aposematic prey occurs in multiple predator species and across species boundaries. This supports the idea that social interactions among predators can reduce attacks on aposematic prey and therefore influence selection for prey defences. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof Journal of Animal Ecology
dc.rights en
dc.subject aposematism en
dc.subject avoidance learning en
dc.subject conspecific information en
dc.subject heterospecific information en
dc.subject predator–prey interactions en
dc.subject social learning en
dc.subject 1181 Ecology, evolutionary biology en
dc.title Social learning within and across predator species reduces attacks on novel aposematic prey en
dc.type Article
dc.description.version Peer reviewed
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion

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