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dc.contributor.authorCastagnolli, K. C.-
dc.contributor.authorde Figueiredo, L. B.-
dc.contributor.authorSantana, D. A.-
dc.contributor.authorde Castro, M. B.-
dc.contributor.authorRomano, M. A.-
dc.contributor.authorSzabo, MPJ-
dc.identifier.citationVeterinary Parasitology. Amsterdam: Elsevier B.V., v. 117, n. 4, p. 271-283, 2003.-
dc.description.abstractAcquired immunity of horses to larvae, nymphs and adults of the Amblyomma cajennense tick was evaluated through three consecutive experimental infestations of tick-bite naive hosts. Data from these infestations were compared to those from field-sensitized horses and donkeys. It was observed that tick-bite naive horses developed a low level of resistance after two infestations as shown by a significant decrease in larval yield and a tendency for lower engorged weight of nymphs during third infestation. Ticks fed on field-sensitized horses had a similar biological performance to that observed on the third infestation of tick-bite naive horses but the mean engorged nymph weight was significantly lower than that of the first infestation from tick-bite naive horses. Donkeys presented the strongest resistance with significantly lower engorged weights of all instars and of the egg mass compared to the first infestation of tick-bite naive horses. Donkeys also displayed a significantly higher resistance than field-sensitized horses as demonstrated by significantly lower egg mass weights. Overall these results indicate that donkeys but not horses maintain a strong resistance to A. cajennense ticks. The importance of these findings in relation to vectoring of tick-borne diseases is discussed. (C) 2003 Elsevier B.V. All rights reserved.en
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectAmblyommna cajennensept
dc.titleAcquired resistance of horses to Amblyomma cajennense (Fabricius, 1787) ticksen
dc.contributor.institutionUniv Franca-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Franca, Franca, SP, Brazil-
dc.description.affiliationUniv Estadual Paulista, Jaboticabal, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Jaboticabal, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofVeterinary Parasitology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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