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Pathogenicity of endophytic entomopathogenic fungi to Ornithodoros erraticus and Ornithodoros moubata (Acari: Argasidae)

AuthorsZabalgogeazcoa, Iñigo ; Zabalgogeazcoa, Iñigo ; Oleaga, Ana ; Pérez Sánchez, Ricardo
KeywordsTick biocontrol
Entomopathogenic fungi
Beauveria bassiana
Lecanicillium lecanii
Tolypocladium cylindrosporum
Issue Date26-Sep-2008
CitationVeterinary Parasitology 158(4): 336-343 (2008)
AbstractThe argasid ticks O. erraticus and O. moubata are of great medical and veterinary importance because they are vectors of the African swine fever virus and several species of human relapsing fever borreliae. Biocontrol of these ticks using entomopathogenic fungi has not been previously reported. We examined the pathogenicity to different developmental stages of these two argasids of six strains of the fungal species Beauveria bassiana (strains Bb1764 and Bb2157), Lecanicillium lecanii (strains Ll586, Ll618 and Ll3047) and Tolypocladium cylindrosporum (strain Tc3398). Three strains, Bb1764, Bb2157, and Tc3398, caused in Spanish O. erraticus mean mortality rates between 34.4% and 62% in 14–28 days post-inoculation. Additionally, Bb2157 also induced in African O. moubata mean mortality rates of 31.9%. The remaining strains caused lower mortality rates and were not considered effective. This is the first study in which some strains of entomopathogenic fungi are found to be effective against argasid ticks of the genus Ornithodoros, and its results might justify further efforts towards the application of entomopathogenic fungal strains as antiargasid biocontrol agents.
Description8 pages, 4 figures.-- PMID: 18976863 [PubMed].-- Printed version published Dec 20, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.vetpar.2008.09.019
Appears in Collections:(IRNASA) Artículos
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