title: Moisture Stress Effects on Survival of Infective Haemonchus contortus Larvae.
abstract: Water was evaporated from infective Haemonchus contortus larvae suspended in tap, distilled and triple-distilled water, and the nematodes were then exposed to 50% and 75% relative humidity (RH) at 20, 30, 40, and 50 C. Sample groups were rehydrated 4 hr daily in similar quality water, observed for motility, then returned to the same RH and temperature and re-evaporated. This was continued until all motility ceased. Longest survival was 80 days at 20 C and 75% RH. In all temperature and RH combinations control (non-desiccated) and desiccated larvae survived longer in distilled or triple-distilled water than in tap water.
authors.forename: K S
authors.initials: KS
authors.lastname: Todd
authors.forename: N D
authors.initials: ND
authors.lastname: Levine
authors.forename: C C
authors.initials: CC
authors.lastname: Whiteside