title: Beauveria bassiana: Synergistic effect with acaricides against the tick Hyalomma anatolicum anatolicum (Acari: Ixodidae).
abstract: Owing to the need to combat the spread of chemical acaricide resistance in ticks, we evaluated the efficacy of a mixture of the entomopathogenic fungus Beauveria bassiana AT17 and acaricides for the control of Hyalomma anatolicum anatolicum in China. A mixture of B. bassiana AT17 at the concentration of 10(8)conidia/mL and the synthetic pyrethroid deltamethrin at concentrations of 2500, 250, 25, 5, 2.5, 0.5 and 0.25ppm was tested in vitro. The germination capability, vegetative growth, conidia production, and viability of B. bassiana AT17 were assessed and the efficacy of the mixture in killing engorged H. anatolicum anatolicum females was measured. High mortality rates were achieved when the entomopathogen was combined with different concentrations of deltamethrin. Neither B. bassiana AT17 nor deltamethrin alone at the same concentrations could cause the higher mortality rates seen with the combination. In addition the combination killed the ticks more rapidly than did either agent alone (3-5days more rapidly). Our results indicate that the mixture of B. bassiana AT17 and deltamethrin has potential as a new type of reagent for integrated control of H. anatolicum anatolicum.
authors: State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Grazing Animal Diseases MOA, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou 730046, China.
authors: Ming
authors: M
authors: Sun
authors: Qiaoyun
authors: Q
authors: Ren
authors: Zhijie
authors: Z
authors: Liu
authors: Guiquan
authors: G
authors: Guan
authors: Huitian
authors: H
authors: Gou
authors: Miling
authors: M
authors: Ma
authors: Youquan
authors: Y
authors: Li
authors: Aihong
authors: A
authors: Liu
authors: Jifei
authors: J
authors: Yang
authors: Hong
authors: H
authors: Yin
authors: Jianxun
authors: J
authors: Luo
mesh_terms: D056810:Acaricides / Q000008:administration & dosage / Q000494:pharmacology*; D000818:Animals; D052982:Beauveria / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D001681:Biological Assay; D002417:Cattle; D004305:Dose-Response Relationship, Drug; D005260:Female; D007305:Insecticide Resistance; D026863:Ixodidae / Q000187:drug effects / Q000382:microbiology*; D009570:Nitriles / Q000008:administration & dosage / Q000494:pharmacology*; D010572:Pest Control, Biological / Q000379:methods*; D011722:Pyrethrins / Q000008:administration & dosage / Q000494:pharmacology*; D011817:Rabbits; D012756:Sheep; D013172:Spores, Fungal / Q000187:drug effects
chemical_list: D056810:Acaricides; D009570:Nitriles; D011722:Pyrethrins; C017180:decamethrin