Effects of microclimatic variables on the availability and movement of third-stage larvae of Ostertagia ostertagi on herbage.
作者： R.C. Krecek , L.W. Douglass , K.D. Murrell
DOI:
关键词: Field conditions 、 Larva 、 Pasture 、 Moisture 、 Biology 、 Third stage larvae 、 Ostertagia ostertagi 、 Air temperature 、 Agronomy
摘要: Assessments were made of the influence several microclimatic variables on availability third-stage larvae Ostertagia ostertagi, pasture herbage. Variables most closely related to recovery from lower herbage samples were: maximum air, mat and dung temperatures. Recovery upper portion was correlated with temperature, sampling-time air temperature temperature. Bearing in mind that moisture threshold maintained throughout trial results this study suggest under field conditions, larval movement O. ostertagi is regulated primarily by
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