Data/hora: 10/06/2024 16:15:18

Provedor de dados: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia
País: | Brazil
Título: | Biological parameters of larvae, nymphs, and engorged females of Amblyomma cajennense (Fabricius, 1787) (Acari: Ixodidae) obtained from artificial and successive infestations on Oryctolagus cuniculus (Linnaeus, 1758) (Lagomorpha: Ochotonidae)
Autores: | Freitas,C.M.V.; Leite,R.C.; Oliveira,P.R.; Fernández,F.C.
Data: | 2009-10-01
Ano: | 2009
Palavras-chave: | Tick; Ixodide; Resistance; Immunity; Infestation.
Resumo: | The development of acquired resistance to Amblyomma cajennense ticks was evaluated. A total of 18 rabbits were uniformly distributed into three groups named GL, GN, and GA that were submitted to three consecutive infestations with, respectively, larvae, nymphs, and adults of A. cajennense. After the infestations, the parasitic and reproductive parameters of recovered instars were evaluated. A significant reduction of recovery rates of inoculated ticks was observed only after the third infestation of animals in groups GL and GN (P&lt;0.01). The modal day for drop-off of engorged larvae and nymphs increased along the infestations. The recovered engorged nymphs presented a significant reduction of the mean body weight between the first and the third infestations (P&lt;0.01). A significant reduction in the mean recovery rate of engorged females was only observed during the third infestation. However, significant reductions (P&lt;0.05) in body weight, egg mass weight, and larva eclosions were observed for recovered engorged females after the second infestation onwards. The results suggest the occurrence of resistance of rabbits to A. cajennense infestations, being more evident against the adult stage.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352009000500011
Editor: | Universidade Federal de Minas Gerais, Escola de Veterinária
Relação: | 10.1590/S0102-09352009000500011
Formato: | text/html
Fonte: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.61 n.5 2009
Fonte: | info:eu-repo/semantics/openAccess