The effect of chemical insecticides on the scavenging performance of Steinernema carpocapsae: Direct effects and exposure to insects killed by chemical insecticides

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dc.authoridTouray, Mustapha/0000-0002-9550-0782
dc.authoridHazir, Selcuk/0000-0001-9298-1472
dc.contributor.authorNalinci, Esra
dc.contributor.authorKaragoz, Mehmet
dc.contributor.authorGulcu, Baris
dc.contributor.authorUlug, Derya
dc.contributor.authorGulsen, Sebnem Hazal
dc.contributor.authorCimen, Harun
dc.contributor.authorHazir, Selcuk
dc.date.accessioned2021-12-01T18:49:29Z
dc.date.available2021-12-01T18:49:29Z
dc.date.issued2021
dc.department[Belirlenecek]en_US
dc.description.abstractEntomopathogenic nematodes are used widely in biological insect control. Entomopathogenic nematodes can infect live insects as well as dead insects (i.e., they can act as scavengers). It is important to determine compatibility of entomopathogenic nematodes with other pest management tactics such as chemical insecticides. We hypothesized that chemical insecticides have negative impact on scavenging nematodes. According to our hypothesis, we first investigated the effects of direct exposure of Steinernema carpocapsae infectivity juveniles (IJs) to three chemical insecticides, cypermethrin, spinosad or diflubenzuron in terms of nematode survival and virulence. Subsequently, using the same chemicals, we tested the effects of insecticide-killed insects on scavenger nematode penetration efficiency, time of emergence and the number of nematode progeny. Prior to our study, the impact of pesticides on scavenger nematode fitness had not been studied. Fall webworm, Hyphantria cunea, and greater wax moth, Galleria mellonella, larvae were used as host insects. The survival rate of IJs after direct exposure was 83% for cypermethrin and 93-97% for the other insecticides and control. There were no significant differences in the survival and virulence of the nematodes after 24 h exposure to insecticides. The number of nematodes that invaded the insecticide-killed host was significantly higher in cypermethrin and spinosad treated groups and live H. cunea than in the diflubenzoron treated group and freeze-killed control. However, no significant differences were observed in time of emergence. Significantly more progeny IJs emerged from Spinosadkilled insects than the freeze-killed control. In conclusion, we discovered that the fitness of scavenging IJs is not diminished by insecticides in insect cadavers. In fact, in some cases the exposure to chemical insecticides may enhance virulence.en_US
dc.identifier.doi10.1016/j.jip.2021.107641
dc.identifier.issn0022-2011
dc.identifier.issn1096-0805
dc.identifier.scopus2-s2.0-85108913403en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jip.2021.107641
dc.identifier.urihttps://hdl.handle.net/20.500.12684/10731
dc.identifier.volume184en_US
dc.identifier.wosWOS:000694716200010en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofJournal Of Invertebrate Pathologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBiological controlen_US
dc.subjectEntomopathogenic nematodesen_US
dc.subjectSteinernema carpocapsaeen_US
dc.subjectCypermethrinen_US
dc.subjectSpinosaden_US
dc.subjectDiflubenzuronen_US
dc.subjectEntomopathogenic Nematodesen_US
dc.subjectHeterorhabditis-Bacteriophoraen_US
dc.subjectNeoaplectana-Carpocapsaeen_US
dc.subjectCompatibilityen_US
dc.subjectPesticidesen_US
dc.subjectRhabditidaen_US
dc.subjectFeltiaeen_US
dc.subjectLepidopteraen_US
dc.subjectColeopteraen_US
dc.subjectInfectionen_US
dc.titleThe effect of chemical insecticides on the scavenging performance of Steinernema carpocapsae: Direct effects and exposure to insects killed by chemical insecticidesen_US
dc.typeArticleen_US

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