title: Influence of climate on pasture infectivity of ovine trichostrongyles in dry pastures.
abstract: The pattern of pasture contamination and the influence of some climatic factors on the development of ovine Trichostrongyles have been studied in dry pastures of Castilla-La Mancha (central Spain) during a 3-year period (1986-1988). The main identified genera were Ostertagia and Trichostrongylus, followed by Haemonchus, Cooperia and Nematodirus. Two peaks of pasture contamination were detected: from mid-winter to early-spring and from mid-autumn to early-winter. No significant differences in this pattern were observed during the 3 years except Haemonchus (1986-1988, P < 0.05; 1987-1988, P < 0.001). Seasons differed significantly (spring-autumn, P < 0.05; summer-the rest of the year, P < 0.001). The temperature was negatively correlated with the level of pasture infectivity (except for Trichostrongylus); however, the rainfall was positively correlated with pasture infectivity.
authors.affiliation: Laboratorio de Parasitología Animal (S.I.A) Toledo, Spain.
authors.forename: C
authors.initials: C
authors.lastname: García Romero
authors.forename: F
authors.initials: F
authors.lastname: Valcárcel
authors.forename: F A
authors.initials: FA
authors.lastname: Rojo Vázquez
mesh_terms: D000818:Animals; D002980:Climate; D004777:Environment; D005260:Female; D006813:Humidity; D015994:Incidence; D008297:Male; D006109:Poaceae / Q000469:parasitology*; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology / Q000469:parasitology*; D013030:Spain / Q000453:epidemiology; D013696:Temperature; D014251:Trichostrongyloidea / Q000302:isolation & purification / Q000502:physiology*; D014252:Trichostrongyloidiasis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*