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Social calls are subject to stabilizing selection in insular bats

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dc.contributor.authorRusso, Danilo
dc.contributor.authorTeixeira, Sérgio
dc.contributor.authorCistrone, Luca
dc.contributor.authorJesus, José
dc.contributor.authorTeixeira, David
dc.contributor.authorFreitas, Tamira
dc.contributor.authorJones, Gareth
dc.date.accessioned2021-09-29T07:43:16Z
dc.date.available2021-09-29T07:43:16Z
dc.date.issued2009
dc.description.abstractAim Bats communicate by emitting social calls, and these often elicit reactions in conspecifics. Many such vocalizations are species-specific so that unambiguous signals can be transmitted and interpreted by conspecifics. In species-rich assemblages, evolutionary pressures might prompt interspecific diversification of call structure so that communication with heterospecifics is avoided. In species poor island communities, where no risk of miscommunication occurs, stabilizing selection should prevail and preserve call structure and function. Call structure in island bats might be inherited from colonizers from the mainland and be maintained with little change in the absence of selection from heterospecifics. To test this hypothesis we studied Pipistrellus maderensis, an insular taxon occurring on the Madeira Archipelago, the Canary Islands and the Azores. It is closely related to one of the most widespread European pipistrelles, Pipistrellus kuhlii. Pipistrellus maderensis most probably evolved from a common ancestor shared with P. kuhlii, or from founders of that taxon that colonized the islands. We hypothesized that on Madeira Island, where no risk of ambiguous communication with heterospecifics exists, the structure and function of social calls should have been preserved by stabilizing selection. Echolocation calls, subject to different selection pressures, may instead show more pronounced differences between P. maderensis and P. kuhlii. Location Madeira Island (Portugal, Atlantic Ocean), central and southern Italy. Methods We recorded social and echolocation calls from allopatric populations of the two pipistrelles and explored interspecific differences in time and frequency characteristics. We also conducted playback experiments by broadcasting recordings of social calls from P. kuhlii and P. maderensis (taken respectively in peninsular Italy and on Madeira) and monitoring the bats’ responses. Results Social call structure showed a strong similarity between species, whereas echolocation calls were markedly different and exhibited a mean divergence of over 6 kHz in their frequency of maximum energy. On Madeira, P. maderensis significantly reduced flight activity when we broadcast P. kuhlii signals, as did P. kuhlii in Italy in response to P. maderensis calls. Main conclusions Reliable interpretation of social calls provides benefits to both the signaller and the receiver because signals help to optimize food exploitation at foraging sites. In the absence of closely related species that can emit similar calls, this advantage may have acted as a strong evolutionary pressure, stabilizing social call structure in P. maderensis in insular ecosystems with limited foraging resources.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRusso, D., Teixeira, S., Cistrone, L., Jesus, J., Teixeira, D., Freitas, T., & Jones, G. (2009). Social calls are subject to stabilizing selection in insular bats. Journal of Biogeography, 36(12), 2212-2221.pt_PT
dc.identifier.doi10.1111/j.1365-2699.2009.02158.xpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3675
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWileypt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectAllopatrypt_PT
dc.subjectBioacousticspt_PT
dc.subjectCommunicationpt_PT
dc.subjectEcholocationpt_PT
dc.subjectEvolutionpt_PT
dc.subjectIsland evolutionpt_PT
dc.subjectItalypt_PT
dc.subjectMadeira (Portugal)pt_PT
dc.subjectPipistrellus kuhliipt_PT
dc.subjectPipistrellus maderensispt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências da Vidapt_PT
dc.titleSocial calls are subject to stabilizing selection in insular batspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage2221pt_PT
oaire.citation.issue12pt_PT
oaire.citation.startPage2212pt_PT
oaire.citation.titleJournal of Biogeographypt_PT
oaire.citation.volume36pt_PT
person.familyNameAbreu de Jesus
person.givenNameJosé Manuel
person.identifier293002
person.identifier.ciencia-id7511-B0D4-B350
person.identifier.orcid0000-0001-8509-2757
person.identifier.scopus-author-id6701828369
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationa6be2afd-2cd9-420b-b08b-5fe354545ac1
relation.isAuthorOfPublication.latestForDiscoverya6be2afd-2cd9-420b-b08b-5fe354545ac1

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