[Compatibility of Beauveria bassiana (Ascomycetes: Clavicipitaceae) with chemicals acaricides used in the control of cattle tick].
The purpose of the present study was to assess compatibility between IBCB66 and IBCB21 isolates of Beauveria bassiana and acaricides: Flumethrin+Coumaphos, Deltamethrin, Dichlorvos+Cypermethrin, Dichlorvos+Chlorpyrifos, Cypermethrin High Cis, Dichlorvos+Cypermethrin High Cis, Cypermethrin and Amitraz, utilized on the control of Rhipicephalus (Boophilus) microplus in our country. The effect of commercial products on the isolates was assayed according to observation of vegetative growth, conidia production, and viability of strains of B. bassiana fungus. With concerning about IBCB66 isolate, products Deltamethrin, Cypermethrin High Cis and Amitraz were compatible, not affecting the entomopathogen development. Product Cypermethrin was toxic, and products Flumethrin+Coumaphos, Dichlorvos+Cypermethrin, Dichlorvos+Chlorpyrifos and Dichlorvos+Cypermethrin High Cis were very toxic. In regard to IBCB21 isolate, products Flumethrin+Coumaphos, Dichlorvos+Cypermethrin, Dichlorvos+Chlorpyrifos, Cypermethrin High Cis, Dichlorvos+Cypermethrin High Cis and Cypermethrin were very toxic and product Amitraz was toxic. From the acaricides evaluated, product Deltamethrin was the single agent that did not produce toxic effect on the entomopathogen.
Barci
Leila A G
LA
Centro de Pesquisa e Desenvolvimento de Sanidade Animal-CPDSA, Instituto Biológico, Av. Conselheiro Rodrigues Alves 1.252, CEP 04.014-002, São Paulo-SP, Brazil. barci@biologico.sp.gov.br
Wenzel
Inajá M
IM
de Almeida
José Eduardo M
JE
de Campos Nogueira
Adriana H
AH
do Prado
Angelo P
AP
D056810:Acaricides / Q000494:pharmacology*; D000818:Animals; D001203:Ascomycota / Q000187:drug effects*; D052982:Beauveria / Q000187:drug effects*; D002417:Cattle; D010572:Pest Control, Biological; D013987:Ticks
D056810:Acaricides