Enhanced susceptibility of Tibraca limbativentris (Heteroptera: Pentatomidae) to Metarhizium anisopliae with sublethal doses of chemical insecticides.

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dc.contributorELIANE DIAS QUINTELA, CNPAF; GABRIEL MOURA MASCARIN, CNPAF; RODRIGO ALVES DA SILVA, CNPAF; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; JOSE FRANCISCO DA SILVA MARTINS, CPACT.
dc.creatorQUINTELA, E. D.
dc.creatorMASCARIN, G. M.
dc.creatorSILVA, R. A. da
dc.creatorBARRIGOSSI, J. A. F.
dc.creatorMARTINS, J. F. da S.
dc.date2013-10-19T00:07:33Z
dc.date2013-10-19T00:07:33Z
dc.date2013-06-03
dc.date2013
dc.date2013-10-19T00:07:33Z
dc.date.accessioned2026-07-01T00:00:10Z
dc.descriptionThis study investigated the interaction of the fungus Metarhizium anisopliae (Metsch.) Sorok. with sublethal doses of synthetic chemical insecticides thiamethoxam and lambda-cyhalothrin for the control of Tibraca limbativentris adults under laboratory and field conditions. Median lethal time (LT50) was reduced significantly when M. anisopliae (5 x 106?5 x 108 conidia/mL) was combined with a sublethal dose (0.77 ppm AI) of thiamethoxam compared with fungus only. A similar response on host mortality was observed for M. anisopliae at 5 x 107 conidia/mL in combination with sublethal dose of lambda-cyhalothrin at 9.33 ppm (AI). Additionally, the thiamethoxam-fungus combination increased overall mortality and percent mycosed insects in comparison to their counterparts alone. Increasing fungus concentration did not increase insect susceptibility when combined with thiamethoxam either at 0.77 or 0.38 ppm (AI). In a field experiment, the combination of M. anisopliae at 1 x 1012 viable conidia/ha with thiamethoxam at 12.5 g (AI)/ha (1=4 full dose) synergistically increased mortality and mycosis of adults of T. limbativentris. Therefore, enhanced T. limbativentris control could potentially be achieved within label rates of fungus (5 x 106 conidia/mL) and sublethal thiamethoxam (0.77 ppm). The strategy of using sublethal doses of chemical insecticides in combination with entomopathogenic fungi is a promising approach to battle the rice stalk stink bug in rice fields.
dc.identifierBiological Control, v. 66, p. 56-64, 2013.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/959159
dc.identifierhttp://dx.doi.org/10.1016/j.biocontrol.2013.03.018
dc.identifier.urihttp://hdl.handle.net/123456789/395154
dc.languageeng
dc.rightsopenAccess
dc.subjectBiocontrol
dc.subjectRice stalk stink bug
dc.subjectArroz
dc.subjectOryza sativa
dc.subjectTibraca limbativentris
dc.subjectMetarhizium anisopliae
dc.subjectInseticida
dc.subjectentomopathogenic fungi
dc.titleEnhanced susceptibility of Tibraca limbativentris (Heteroptera: Pentatomidae) to Metarhizium anisopliae with sublethal doses of chemical insecticides.
dc.typeArtigo de periódico

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