Parasitology Research (2016) 115, 143-149

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Christian Luz, Walmirton Bezerra D'Alessandro, Juscelino Rodrigues and Éverton Kort Kamp Fernandes (2016)
Efficacy of water- and oil-in-water-formulated Metarhizium anisopliae in Rhipicephalus sanguineus eggs and eclosing larvae
Parasitology Research 115 (1), 143-149
Abstract: Conidia of the entomopathogenic fungus Metarhizium anisopliae (Ascomycota: Clavicipitaceae) were assessed against Rhipicephalus sanguineus (Arachnida: Ixodidae) eggs under laboratory conditions. Clusters of 25 eggs were applied either directly with the fungal conidial formulations or set on previously fungus-treated filter paper. Treatments consisted of conidia formulated in water or an oil-in-water emulsion at final concentrations of 3.3 × 103, 104, 3.3 × 104, 105, or 3.3 × 105 conidia/cm2. The development of mycelium and new conidia on egg clusters incubated at 25 °C and humidity close to saturation depended on conidial concentration, formulation, and application technique. No larvae eclosed from eggs after direct applications of conidia regardless of the formulation. The eclosion and survival of larvae from indirectly treated egg clusters depended on the type of formulation and conidial concentration applied. Oil-in-water formulations of conidia demonstrated the highest activity against eggs of R. sanguineus.
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Link to article at publishers website
Database assignments for author(s): Christian Luz

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
formulation/storage of bioagents


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Rhipicephalus sanguineus
Metarhizium anisopliae (entomopathogen) Rhipicephalus sanguineus