Acquired resistance of horses to Amblyomma cajennense (Fabricius, 1787) ticks

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCastagnolli, K. C.
dc.creatorde Figueiredo, L. B.
dc.creatorSantana, D. A.
dc.creatorde Castro, M. B.
dc.creatorRomano, M. A.
dc.creatorSzabo, MPJ
dc.date2014-05-20T15:27:06Z
dc.date2016-10-25T18:01:49Z
dc.date2014-05-20T15:27:06Z
dc.date2016-10-25T18:01:49Z
dc.date2003-11-28
dc.date.accessioned2017-04-06T00:00:12Z
dc.date.available2017-04-06T00:00:12Z
dc.identifierVeterinary Parasitology. Amsterdam: Elsevier B.V., v. 117, n. 4, p. 271-283, 2003.
dc.identifier0304-4017
dc.identifierhttp://hdl.handle.net/11449/37145
dc.identifierhttp://acervodigital.unesp.br/handle/11449/37145
dc.identifier10.1016/j.vetpar.2003.09.004
dc.identifierWOS:000187016800004
dc.identifierhttp://dx.doi.org/10.1016/j.vetpar.2003.09.004
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/880504
dc.descriptionAcquired 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.
dc.languageeng
dc.publisherElsevier B.V.
dc.relationVeterinary Parasitology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAmblyommna cajennense
dc.subjectdonkey
dc.subjecthorse
dc.subjectresistance
dc.subjectixodidae
dc.titleAcquired resistance of horses to Amblyomma cajennense (Fabricius, 1787) ticks
dc.typeOtro


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