Effect of Water Flooding on the Oviposition Capacity of Engorged Adult Females and Hatchability of Eggs of Dog Ticks:Rhipicephalus sanguineusandHaemaphysalis leachi leachi

Abstract

Effects of water flooding on the oviposition capacity of engorged adult females and hatchability of eggs ofRhipicephalus sanguineusandHaemaphysalis leachi leachiunder laboratory conditions were investigated. The durations of time of water flooding were 1, 2, 4, 6, 12, 24, 48, 72, 96, and 120 hours. Engorged females ofR. sanguineusandH. leachi leachidid not oviposit after being flooded for more than 48 and 6 hours, respectively. The preoviposition periods of both species were longer than those of their controls. The number of eggs laid were significantly lower () and higher () than their controls, respectively, forR. sanguineusandH. leachi leachiflooded for 1–4 hours. The hatchability of eggs of both species decreased as flooding time increased. The percentage of hatchability was negatively correlated with flooding time and was highly significant (; ). It is concluded thatR. sanguineustolerated simulated water flooding more thanH. leachi leachi.