Data/hora: 22/09/2024 10:00:33

Biblioteca(s): 	Embrapa Gado de Leite.	
Data corrente: 	12/12/2011	
Data da última atualização: 	05/02/2024	
Autoria: 	MONTEIRO, C. M. de O.; PRATA, M. C. de A.; FAZA, A.; BATISTA, E. S. de P.; DOLINSKI, C.; FURLONG, J.	
Afiliação: 	CAIO MÁRCIO DE OLIVEIRA MONTEIRO, UFJF; MARCIA CRISTINA DE AZEVEDO PRATA, CNPGL; ALINE FAZA, UFJF; ELDER SIMÕES DE PAULA BATISTA, UFJF; CLÁUDIA DOLINSKI, Universidade Estadual Norte Fluminense; JOHN FURLONG, CNPGL.	
Título: 	Heterorhabditis bacteriophora (Rhabditida: Heterorhabditidae) HP88 for biological control of Rhipicephalus microplus (Acari: Ixodidae): the effect of different exposure times of engorged females to the nematodes.	
Ano de publicação: 	2012	
Fonte/Imprenta: 	Veterinary Parasitology, v. 185, n. 3/4, p. 364-367, 2012.	
DOI: 	https://doi.org/10.1016/j.vetpar.2011.10.007	
Idioma: 	Inglês	
Conteúdo: 	The aim of this study was to assess the influence of different exposure times of engorged female the Rhipicephalus microplus to infective juveniles of Heterorhabditis bacteriophora isolate HP88. The engorged females were divided into seven groups (six treatments and one control) of 20 ticks each with statistically similar average weights (p > 0.05) and exposed to concentrations of 300 nematodes/tick for periods of 3, 6, 12, 24, 48 and 72 h. The following biological parameters were monitored: pre-oviposition period; egg mass weight; hatching percentage; and efficacy of treatment. There was no influence of the exposure time on the pre-oviposition period (p > 0.05), while there were significant differences (p < 0.05) between the groups exposed for 24, 48 and 72 h and the control group with respect to the egg mass weight, and 24 h for hatching percentage. Treatment efficacy reached 100% after exposure for 48 and 72 h. These results demonstrate that infective juveniles of H. bacteriophora HP88, under laboratory conditions, interfere in the majority of the biological parameters of the non-parasitic phase of engorged R. microplus females when the exposure time is greater than or equal to 24 h.	
Palavras-Chave: 	Cattle tick.	
Thesaurus Nal: 	biological control; entomopathogenic nematodes.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Gado de Leite (CNPGL)	
Exemplares: 	CNPGL - (18579-1) - UPC - AP - DD -  -  -  - DIS