Effect of isolate IBCB 130 of the fungus Purpureocillium lilacinum on the tick Rhipicephalus (Boophilus) microplus (Acari: Ixodidae)

The importance of in-vitro tests using larvae and adults of the tick Rhipicephalus (Boophilus) microplus in investigating new inputs for its biological control serves as a basis for continuation of field experiments. This article presents in-vitro efficacy data on the fungus Purpureocillium lilacinu...

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Published in:Arquivos do Instituto Biológico (São Paulo) 2023, Vol.90, p.1
Main Authors: Antonucci, Yandra Corrêa Peres, Moura, Thais Araújo, Duarte, Fernanda Calvo, Almeida, José Eduardo Marcondes de, Mendes, Márcia Cristina
Format: Article
Language:English
Subjects:
Biological control
Boophilus
Conidia
Effectiveness
Females
Field tests
Fungi
In vitro methods and tests
Larvae
Purpureocillium lilacinum
Rhipicephalus
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Summary:The importance of in-vitro tests using larvae and adults of the tick Rhipicephalus (Boophilus) microplus in investigating new inputs for its biological control serves as a basis for continuation of field experiments. This article presents in-vitro efficacy data on the fungus Purpureocillium lilacinum (IBCB 130) tested using larvae and engorged females of the tick R. microplus according to modified techniques of SHAW (1966) and MONTEIRO (2014). The efficacy results from the tests on engorged females ranged from 99.6 at the highest concentration used (2x109 conidia/mL) to 51% at the lowest concentration (1x107 conidia/mL). The 50, 90 and 99% lethal concentrations found in the tests on larvae were, respectively, 5.1x108, 5.2x109, and 3.3x1011 conidia/mL. The results from this investigation have enabled field experiments to control the tick R. microplus using the IBCB 130 isolate of the fungus P. lilacinum.
ISSN:0020-3653
1808-1657
DOI:10.1590/1808-1657000022023