title: Effects of 60Co irradiation on unfed adults and engorged females of the tick Hyalomma anatolicum.
abstract: Unfed and engorged adults of the cattle tick Hyalomma anatolicum, known to be biological vector of Theileria anmulata in India, were exposed to various levels of gamma-radiation from 0-60 000 R, and the effect on engorgement and redproduction was observed. The radiation tolerance limit for unfed adults is 1000 R for engorgement and reproduction. The sterilizing dose for most of the males is 2000 R but the females can tolerate a slightly higher dose. Engorged females have a tolerance limit of 10 000 R for oviposition and 1000 R for larval development. Higher dosages (20 000-60 000 R) have adverse effects on development, completely inhibiting egg-laying at 60 000 R, but these females (60 000 R) live longer (10 weeks) than those irradiated at lower levels.
mesh_terms: D000818:Animals; D003037:Cobalt Radioisotopes; D003307:Copulation / Q000528:radiation effects; D005247:Feeding Behavior / Q000528:radiation effects; D005260:Female; D005720:Gamma Rays; D008297:Male; D010058:Oviposition / Q000528:radiation effects; D010063:Ovum / Q000528:radiation effects; D011830:Radiation Effects; D012098:Reproduction / Q000528:radiation effects*; D013245:Sterilization, Reproductive; D013983:Tick Control; D013987:Ticks / Q000528:radiation effects*
chemical_list: D003037:Cobalt Radioisotopes