Data/hora: 21/09/2024 18:01:48

Biblioteca(s): 	Embrapa Pantanal.	
Data corrente: 	12/02/1996	
Data da última atualização: 	12/02/1996	
Autoria: 	LEVINE, N. D.; TODD JUNIOR, K. S.	
Título: 	Micrometeorological factors involved in development and survival of free-living stages of the sheep nematodes Haemonchus contortus and Trichostrongylus colubriformis.	
Ano de publicação: 	1975	
Fonte/Imprenta: 	International Journal Biometeorology, v.19, n.3, p.174-183, 1975.	
Idioma: 	Inglês	
Conteúdo: 	Temperature and soil moisture are the most important factors affecting the development and survival of haemonchus contortus and Trichostrongylys columbriformis eggs and larvae on pasture. More than half of the eggs develop into infective larvae in the laborato-
ry, but a very low percentage (0.03% for H. contortus) does so on pasture. there is a marked difference between H. contiortus and T. colubriformis in survival on infective larvae. H. contortus larvae survided in the winter at Urbana poorly, whereas T. colubrifor-
mis did well. The former durvived better in the spring and worse in the sdummer, while both survived equally well in the fall. Technics for larval recovery from pasture are not very efficient. Meteorologic conditions at ground level where the larvae exist are quite different from those in a standard weather shelter 1.6 m above the ground. Bioclimatographs in which mean monthly maximum temperatures are plotted against total monthly precipitation are fairly good in predicting the type of nematode liable to be important in a given region, but they are too simplistic to be relied on for more than approximations.	
Palavras-Chave: 	Desenvolvimento; Development; Fator micrometeorologico; Free-living stages; Hamonchus contortus; Micrometeorological factor; Nematode; Parasita; Parasite; Survival.	
Thesagro: 	Carneiro; Nematóide; Sobrevivência.	
Thesaurus Nal: 	sheep; Trichostrongylus colubriformis.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Pantanal (CPAP)	
Exemplares: 	CPAP - (30702-1) - ADC - SP - -- - SP1707 -  - 1707 - DIS