Corn J L, Snyder B D, Barré N, Garris G I
College of Veterinary Medicine, University of Georgia, Athens 30602.
J Med Entomol. 1994 May;31(3):490-5. doi: 10.1093/jmedent/31.3.490.
The effect of acaricide treatment of cattle on the infestation of the small Indian mongoose (Herpestes auropunctatus Hodgson) by Amblyomma variegatum (F.) was determined during a field evaluation of selected acaricides in Guadeloupe, French West Indies. From April 1990 to April 1991, cattle at one site were treated every 14 d with pour-on formulations of deltamethrin, flumethrin, or permethrin; and cattle at a second site were treated as per a local standard treatment using a spray formulation of coumaphos every 30 d. The protocol was then reversed, and from April to July 1991 cattle at the original standard treatment site were treated using the pour-on treatment. Mongooses were examined for ticks during February-March and July 1990 and 1991. The mean prevalence of infestation of mongooses by A. variegatum larvae was reduced from 41 to 27% during the February-March to July periods at the pour-on treatment sites but increased from 29 to 43% during the same periods at the standard treatment sites. The mean relative density of infestation by larvae decreased from 2.15 to 0.65 at the pour-on treatment sites and increased from 0.7 to 1.95 at the standard treatment sites during the same periods. Data on nymphal infestations were inconclusive, and mongooses were not infested by adult ticks. The infestation of mongooses by A. variegatum may be of importance as a short-term alternative host system for immature stages of this tick during an eradication program.
在法属西印度群岛瓜德罗普岛对选定杀螨剂进行的田间评估中，测定了对牛进行杀螨剂处理对印度小獴（食蟹獴）感染变异革蜱的影响。1990年4月至1991年4月，在一个地点的牛每隔14天用溴氰菊酯、氟氯氰菊酯或氯菊酯的浇泼剂进行处理；在另一个地点的牛按照当地标准处理，每隔30天用蝇毒磷的喷雾制剂进行处理。然后方案颠倒过来，1991年4月至7月，在原来采用标准处理的地点对牛使用浇泼剂处理。在1990年和1991年的2月至3月以及7月对獴进行蜱虫检查。在浇泼剂处理地点，食蟹獴被变异革蜱幼虫感染的平均发生率在2月至3月至7月期间从41%降至27%，但在标准处理地点同期从29%增至43%。同期，浇泼剂处理地点幼虫感染的平均相对密度从2.15降至0.65，而标准处理地点从0.7增至1.95。若虫感染的数据尚无定论，且成年蜱未感染獴。在根除计划期间，食蟹獴被变异革蜱感染作为该蜱未成熟阶段的短期替代宿主系统可能具有重要意义。
