Acaricide susceptibilities of Field-Collected Populations of Two-spotted Spider Mite, Tetranychus urticae (Acari:Tetranychidae) from Apple Orchards

사과원에서 채집된 점박이응애(Tetranychus urticae)의 지역별 살비제 감수성

  • Song, Cheol ;
  • Kim, Gil-Hah ;
  • Ahn, Soo-Jeong ;
  • Park, No-Joong ;
  • Cho, Kwang-Yun
  • 송철 ;
  • 김길하 ;
  • 안수정 ;
  • 박노중 ;
  • 조광연
  • Published : 1995.12.01

Abstract

Susceptibilies of tow-spotted spider mite (Tetranychus urticae Koch) collected at 6 locations were assessed to 15 acaricides. The response to acaricides were almost similar in female adults and eggs. There were considerable difference in susceptibility depending on the acaricide treated and the region from which the population was collected. The population showing resistance ratio of more than 20 with respect to certain acaricide was regarded as a resistant population to the acaricide. The resistant populations in terms of female adult were as follows: Suwon population to azocyclotin, cyhexatin, and fenbutatin-oxide; Taejon population to dicofol and fenbutatin-oxide; Chongju population to dicofoll Chinju populatin to cyhexatin, dicofol, and fenbutatin-oxide. The resistant populations in terms of egg were as follows; Suwon population to bifenthrin, clofentezine, hexythiazox, and tetradifon; Kunwi, Chongju, and Kwangju populations to bifenthrin; Taejon population to amitraz and bifenthrin; Taejon populatin to amitraz and bifenthrin; Chinju population to amitraz, bifenthrin, clofentezine, dicofol, and tetradifon. However, the female adults and eggs of all field populations were susceptible to abamectin, chlorfenson, and fenpyroximate. This tendency was also reported previously in the susceptible strain from laboratory.

Keywords

Tetranychus urticae;resistance;acaricide