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Widespread experimental evidence of Allee effects in insects: a meta-analysis

2024-08Journal article Open access
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dc.contributor.authorBranco, Manuela
dc.contributor.authorDokhelar, Théo
dc.contributor.authorBrockerhoff, Eckehard G.
dc.contributor.authorLiebhold, Andrew M.
dc.contributor.authorJactel, Hervé
dc.date.accessioned2025-08-01T10:14:32Z
dc.date.available2025-08-01T10:14:32Z
dc.date.issued2024-08
dc.description.abstractDuring the last two decades there has been growing recognition of the importance of Allee effects in population dynamics and applied ecology. The Allee effect, that is decreased fitness at lower population densities, has been recognized as potentially playing an important role in the conservation of endangered species, in the practice of biological control, and the eradication of invasive species. Although a number of theoretical studies have been devoted to the role of Allee effects in the population dynamics of insects and other terrestrial arthropods, experimental evidence documenting Allee effects is still scarce. Here, we reviewed the literature reporting on density-dependent relationships in low-density populations and conducted a meta-analysis of 191 case studies to identify the occurrence of Allee effects and associated species traits. Allee effects are not rare in terrestrial arthropods, as they were reported in 47% of the cases we reviewed, comprising 46 out of 68 species. Ample examples exist for both demographic Allee effects (28 out of 74 cases cases), and component Allee effects (61 out of 117 cases). Insufficient mating success, cooperative feeding, and enemy escape were the three main mechanisms associated with Allee effects in terrestrial arthropods. Insufficient reproductive success was the mechanism with the highest proportion of related Allee effects (71%). Voltinism and host specialization were common species traits behind demographic Allee effects. Host specialists with univoltine life cycles tended to have stronger Allee effects. The high frequency of Allee effects in terrestrial arthropods reported here and the identified mechanisms behind them have important implications for the selection of management strategies.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBranco, Manuela, et al. «Widespread Experimental Evidence of Allee Effects in Insects: A Meta-Analysis». Entomologia Generalis, vol. 44, n.o 4, setembro de 2024, pp. 765–78. https://doi.org/10.1127/entomologia/2024/2377pt_PT
dc.identifier.doi10.1127/entomologia/2024/2377pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/102609
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSchweizerbart Science Publisherspt_PT
dc.relationForest Research Centre
dc.relationLaboratory for Sustainable Land Use and Ecosystem Services
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBiological controlpt_PT
dc.subjectdemographypt_PT
dc.subjecteradicationpt_PT
dc.subjectextinctionpt_PT
dc.subjectfitnesspt_PT
dc.subjectgrowth ratept_PT
dc.subjectinsect declinept_PT
dc.subjectspecializationpt_PT
dc.subjectspecies traitspt_PT
dc.subjectvoltinismpt_PT
dc.titleWidespread experimental evidence of Allee effects in insects: a meta-analysispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleForest Research Centre
oaire.awardTitleLaboratory for Sustainable Land Use and Ecosystem Services
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0092%2F2020/PT
oaire.citation.endPage778pt_PT
oaire.citation.issue4pt_PT
oaire.citation.startPage765pt_PT
oaire.citation.titleEntomologia Generalispt_PT
oaire.citation.volume44pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBranco
person.givenNameManuela
person.identifier124857
person.identifier.ciencia-id9A15-2124-A039
person.identifier.orcid0000-0002-8140-1257
person.identifier.ridD-5274-2011
person.identifier.scopus-author-id7004477399
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3b8cc910-0045-4627-995e-33dd0a61718a
relation.isAuthorOfPublication.latestForDiscovery3b8cc910-0045-4627-995e-33dd0a61718a
relation.isProjectOfPublication56bd0ae9-f8da-4344-b9a2-f633d4f68b89
relation.isProjectOfPublication80b19316-2c6c-47f4-96bf-17136024c99c
relation.isProjectOfPublication.latestForDiscovery80b19316-2c6c-47f4-96bf-17136024c99c

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