Global distribution patterns provide evidence of niche shift by the introduced African dung beetle Digitonthophagus gazella

dc.contributor.authorNoriega, Jorge Ari
dc.contributor.authorFloate, Kevin D.
dc.contributor.authorGenier, Francois
dc.contributor.authorReid, Chris A.M.
dc.contributor.authorKohlmann, Bert
dc.contributor.authorHorgan, Finbarr G.
dc.contributor.authorDavis, Adrian L.V.
dc.contributor.authorForgie, Shaun A.
dc.contributor.authorAguilar, Carlos
dc.contributor.authorIbarra, Mario G.
dc.contributor.authorVaz-de-Mello, Fernando
dc.contributor.authorZiani, Stefano
dc.contributor.authorLobo, Jorge M.
dc.date.accessioned2021-04-07T14:37:31Z
dc.date.issued2020-10
dc.descriptionAppendix S1. Digitonthophagus gazella geographical records included in the analysis.en_ZA
dc.descriptionAppendix S2. Explanatory variables deleted in the various phases of the screening analysis and those finally selected. Variance inflation factor (V): variables deleted by having a V value <5 in the geographical background (GB) of the native area of Digitonthophagus gazella. Index (I): variables deleted after applying the instability index to identify those with the highest capacity to discriminate between the environmental conditions in the presence cells against those prevailing in the GB area. F: finally selected variables.en_ZA
dc.descriptionThe data from New Zealand are courtesy of the Dung Beetle Release Strategy Group (DBRSG) and Landcare Research Manaaki Whenua.en_ZA
dc.description.abstractThe establishment of cattle ranches throughout the world has prompted the release of dung beetles as biological control agents that reduce pasture fouling and control dung‐breeding flies. One of these beetles, Digitonthophagus gazella (Fabricius) (Coleoptera: Scarabaeidae), that is native to southeast Africa, has been introduced into the Americas, Australia, and New Zealand. Distribution records for this species have been used to develop climate models of potential future establishment. Recent studies, however, identify D. gazella as a complex of seven species. Taking into account this revision, and the clear identification of the records belonging to the actual D. gazella, we developed environmental models to identify factors that have contributed to the establishment of this species across regions and habitats. We compared the environmental conditions of D. gazella in its native range against those in the regions where the species has or has not established. Our results indicate that D. gazella is still absent in certain parts of Central and South America and parts of Africa where it could potentially establish. We speculate that its distribution in Africa is limited by competitive exclusion. The introduction of D. gazella in America is relatively recent, such that the full extent of its distribution has probably yet to be realized. In Australia and North America, D. gazella is present in regions not predicted according to its native environmental conditions. This discrepancy may reflect a lack of competitive exclusion, phenotypic plasticity, and/or genetic adaptation. Our analyses suggest that the species has the ability to adapt to a wide range of environmental conditions that are extremely different from those in their native region. The species represents a useful case study to indicate that an introduced species may expand its realized niche beyond what is expected based on apparent environmental limits in the species native range.en_ZA
dc.description.departmentZoology and Entomologyen_ZA
dc.description.embargo2021-08-11
dc.description.librarianhj2021en_ZA
dc.description.sponsorshipA Colciencias Ph.D. scholarship.en_ZA
dc.description.urihttps://onlinelibrary.wiley.com/journal/15707458en_ZA
dc.identifier.citationNoriega, J.A., Floate, K.D., Genier, F. et al. 2020, 'Global distribution patterns provide evidence of niche shift by the introduced African dung beetle Digitonthophagus gazella', Entomologia Experimentalis et Applicata, vol. 168, no. 10, pp. 766-782.en_ZA
dc.identifier.issn0013-8703 (print)
dc.identifier.issn1570-7458 (online)
dc.identifier.other10.1111/eea.12961
dc.identifier.urihttp://hdl.handle.net/2263/79340
dc.language.isoenen_ZA
dc.publisherWileyen_ZA
dc.rights© 2020 The Netherlands Entomological Society. This is the pre-peer reviewed version of the following article : 'Global distribution patterns provide evidence of niche shift by the introduced African dung beetle Digitonthophagus gazella', Entomologia Experimentalis et Applicata, vol. 168, no. 10, pp. 766-782, 2020, doi : 10.1111/eea.12961. The definite version is available at : https://onlinelibrary.wiley.com/journal/15707458.en_ZA
dc.subjectDistribution modelen_ZA
dc.subjectPotential distributionen_ZA
dc.subjectColonizationen_ZA
dc.subjectEnvironmental nicheen_ZA
dc.subjectInvasive speciesen_ZA
dc.subjectOnthophaginien_ZA
dc.subjectScarabaeinaeen_ZA
dc.subjectColeopteraen_ZA
dc.subjectScarabaeidaeen_ZA
dc.subjectBiological controlen_ZA
dc.subjectBiocontrol agentsen_ZA
dc.subjectSpecies complexen_ZA
dc.subjectClimate modelen_ZA
dc.subjectPasture foulingen_ZA
dc.subjectDung-breeding fliesen_ZA
dc.subjectAfrican dung beetleen_ZA
dc.subjectDigitonthophagus gazellaen_ZA
dc.titleGlobal distribution patterns provide evidence of niche shift by the introduced African dung beetle Digitonthophagus gazellaen_ZA
dc.typePostprint Articleen_ZA

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