Susceptibility of the cattle tick Boophilus microplus (Acari: Ixodidae) to isolates of the fungus Beauveria bassiana

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dc.contributor.authorVieira Paião, J. D C [UNESP]
dc.contributor.authorMonteiro, A. C. [UNESP]
dc.contributor.authorDo Nascimento Kronka, S. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:20:17Z
dc.date.available2014-05-27T11:20:17Z
dc.date.issued2001-07-04
dc.description.abstractThe susceptibility of the tick Boophilus microplus to Beauveria bassiana was evaluated by inoculating eggs, larvae and engorged females of the tick with five fungal isolates at concentrations of 106, 107 and 108 conidia/ml. Tick eggs (0.25 g) were immersed in 1 ml of a suspension of the different conidial concentrations for 1 min. Similar exposure was performed by immersion of 2000 larvae and homogeneous groups of nine engorged females in 2 and 20 ml of conidial suspension, respectively. Treated eggs, larvae and adults were placed in an incubator at 27 ± 1 °C and relative humidity above 80% for evaluation of the fungal action. All fungal isolates applied at all conidial concentrations reduced the hatching rate of larvae from treated eggs by 1.36-65.58% and increased the mortality rate of inoculated larvae by 0.8-70.49%. In the bioassay with engorged females, oviposition period was reduced by 9.69-47.80%, egg mass weight by 4.71-53.87%, estimated reproduction by 8.3-60.62%, egg production index by 5.03-54.20%, percent larval hatching by 0.27-13.96%, and the mortality rate of treated females was increased by 96.60-100%. The reduction of the estimated reproduction obtained for the treated groups ranged from 8.37 to 64.52%. The sporulation of the pathogen on dead females ranged from 3.70 to 88.88% depending on the isolate and concentration used. Isolates AM 09, CB 7 and JAB 07 were the most effective and effectiveness increased with increasing concentrations of conidia in the suspensions.en
dc.description.affiliationLaboratório de Microbiologia Departamento de Producao Vegetal FCAV/UNESP, Via Acesso Prof. Paulo D. Castellane, 14884-900 Jaboticabal, SP
dc.description.affiliationUnespLaboratório de Microbiologia Departamento de Producao Vegetal FCAV/UNESP, Via Acesso Prof. Paulo D. Castellane, 14884-900 Jaboticabal, SP
dc.format.extent245-251
dc.identifierhttp://dx.doi.org/10.1023/A:1016653700599
dc.identifier.citationWorld Journal of Microbiology and Biotechnology, v. 17, n. 3, p. 245-251, 2001.
dc.identifier.doi10.1023/A:1016653700599
dc.identifier.issn0959-3993
dc.identifier.scopus2-s2.0-0034987905
dc.identifier.urihttp://hdl.handle.net/11449/66548
dc.identifier.wosWOS:000169523700006
dc.language.isoeng
dc.relation.ispartofWorld Journal of Microbiology and Biotechnology
dc.relation.ispartofjcr2.100
dc.relation.ispartofsjr0,604
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBeauveria bassiana
dc.subjectBioassay
dc.subjectBiological control
dc.subjectBoophilus microplus
dc.subjectCattle tick entomopathogenic fungi
dc.subjectbioassay
dc.subjectcolony forming unit
dc.subjectconcentration (parameters)
dc.subjectconidium
dc.subjectfemale
dc.subjectfungal infection
dc.subjectgenetic susceptibility
dc.subjecthatching
dc.subjecthumidity
dc.subjectincubation
dc.subjectmicrobiology
dc.subjectmortality
dc.subjectsuspension cell culture
dc.subjecttemperature
dc.subjectAcari
dc.subjectBassiana
dc.subjectBeauveria
dc.subjectBos taurus
dc.subjectCordyceps bassiana
dc.subjectFungi
dc.subjectInvertebrata
dc.subjectIxodidae
dc.titleSusceptibility of the cattle tick Boophilus microplus (Acari: Ixodidae) to isolates of the fungus Beauveria bassianaen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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Artigos - Produção Vegetal - FCAV