期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2014
卷号：21
期号：2
页码：259-262
DOI：10.5604/1232-1966.1108587
出版社：Institute of Agricultural Medicine in Lublin
摘要：Introduction. Ixodes ricinus tick is of great medical and veterinary importance and has a wide range of geographicaldistribution. The study presents the effect of permethrin (Per) and cypermethrin (CM) on engorged I. ricinus females.Materials and method. The effect of perythroids studied on engorged I. ricinus females was assessed on the basis of thepre-oviposition and oviposition period. Remote effects of Per and CM application were assessed by investigation of thelength and course of embryonic development and larval hatching from eggs laid by pyrethroid-treated females. Per (CopexWP) was used at doses of 0.78125–25.0 μg/1 specimen, and CM (Kordon 10WP) was applied at 0.3125–10.0 μg/1 specimen.Immediately after the feeding period, I. ricinus females were sprayed with 20 μl of a pyrethroid solution and kept at 28 °Cand 75%RH.Results. The experiments demonstrated that CM exerted a stronger toxic effect on I. ricinus females than Per. The lowestdoses of CM doubled the length of the pre-oviposition period while its highest doses prolonged the period nearly threetimes compared with the control. The pyrethroids applied reduced the number and weight of eggs and changed theparameters of the oviposition process. Application of the tested pyrethroid doses led to disturbances in the embryonicdevelopment of I. ricinus, i.e. the development was prolonged, few normal larvae hatched, numerous eggs and embryosat various developmental stages died, and larval hatch was inhibited.Conclusions. Knowledge about the sensitivity of engorged females to different doses of the tested pyrethroids and theremote effects of their action can be used in practice for tick control among livestock animals, and the reduction of tickpopulation abundance in the environment
关键词：Ixodes ricinus; permethrin; cypermethrin; acaricide; tick reproduction; egg development
