Potential for insecticide-mediated shift in ecological dominance between two competing aphid species

dc.creatorGuedes, Raul N. C.
dc.creatorMohammed, Abd Allah A. H.
dc.creatorDesneux, Nicolas
dc.creatorMonticelli, Lucie S.
dc.creatorFan, Yinjun
dc.creatorShi, Xueyan
dc.creatorGao, Xiwu
dc.date2019-04-11T11:18:15Z
dc.date2019-04-11T11:18:15Z
dc.date2019-07
dc.date.accessioned2023-09-27T21:20:20Z
dc.date.available2023-09-27T21:20:20Z
dc.identifier0045-6535
dc.identifierhttps://doi.org/10.1016/j.chemosphere.2019.03.114
dc.identifierhttp://www.locus.ufv.br/handle/123456789/24460
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8958912
dc.descriptionCompetition is a key structuring component of biological communities, which is affected by both biotic and abiotic environmental stressors. Among the latter, anthropic stressors and particularly pesticides are noteworthy due to their intrinsic toxicity and large use in agroecosystems. However this issue has been scarcely documented so far. In this context, we carried out experiments under laboratory conditions to evaluate stress imposed by the neonicotinoid insecticide imidacloprid on intra and interspecific competition among two major wheat pest aphids. The bird cherry-oat aphid Rhopalosiphum padi L. and the English grain aphid Sitobion avenae F. were subjected to competition on wheat seedlings under varying density combinations of both species and subjected or not to imidacloprid exposure. Intraspecific competition does take place without insecticide exposure, but so does interspecific competition between both aphid species with R. padi prevailing over S. avenae. Imidacloprid interfered with both intra and interspecific competition suppressing the former and even the latter for up to 14 days, but not afterwards when a shift in dominance takes place favoring S. avenae over R. padi, in contrast with the interspecific competition without imidacloprid exposure. These findings hinted that insecticides are indeed able to mediate species interaction and competition influencing community structure and raising management concerns for favoring potential secondary pest outbreaks.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherChemosphere
dc.relationVolume 226, Pages 651-658, July 2019
dc.rightsElsevier B. V.
dc.subjectIntraspecific competition
dc.subjectInterspecific competition
dc.subjectRhopalosiphum padi
dc.subjectSitobion avenae
dc.subjectImidacloprid
dc.subjectDominance shift
dc.titlePotential for insecticide-mediated shift in ecological dominance between two competing aphid species
dc.typeArtigo


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