A preliminary study of the effect of microclimate on third-stage larvae of Haemonchus contortus and Haemonchus placei on irrigated pasture.
作者： R.C. Krecek , H.T. Groeneveld , J.I. Maritz
DOI: 10.1016/0020-7519(92)90123-3
关键词: Nematode 、 Animal science 、 Humidity 、 Pasture 、 Biology 、 Haemonchus contortus 、 Agronomy 、 Relative humidity 、 Population density 、 Larva 、 Environmental factor
摘要: Abstract Assessments were made on the influence of several microclimatic variables availability third-stage larvae Haemonchus contortus and placei four strata irrigated Kikuyu pasture. Three replicates these pasture samples collected 18 sample days over 12 months log 10 mean counts recovered analysed by a stepwise regression model. Predictors for two nematode species included relative humidity, illumination, air temperature windspeed. The effect both was similar; as increased, number increased. inverse true windspeed; windspeed increased larval decreased. For H. , humidity all except upper herbage. R 2 values ranged from 0.11 to 0.21 0.04 0.12 . Under conditions this study, only 21% 12% can be explained conditions.
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