以浸葉餵食法測試採自七個地區之南黃薊馬(Thrips palmi Karny)二齡幼蟲對免敵克(bendiocarb)、加保扶(carbofuran)、丁基加保扶(carbosulfan)、覆滅螨(formetanate)、滅賜克(methiocarb)、佈飛松(profenofos)、白克松(pyraclofos)、必芬松(pyridaphenthion)、賽洛寧(λ-cyhalothrin)、第滅寧(deltamethrin)及益達胺(imidacloprid)等11種藥劑的感受性,其中對滅賜克的感受性最高,其LC_(50)小於0.05mg/ml,藥效最好;對必芬松的LC_(50)大於2.0 mg/ml,藥效最差。比較南黃薊馬對測試藥劑在不同地區間的差異,其中加保扶、白克松、賽洛寧、第滅寧及益達胺等藥劑的感受性在地區間沒有差異;其它有差異的藥劑,則以覆滅蟎的抗性比36倍為最高,必芬松的21倍次之。
Susceptibility values of field-collected strains of the southern yellow thrip, Thrips palmi, from seven locations from 1997 to 2000 in Taiwan to bendiocarb, carbofuran, carbosulfan, formetanate, methiocarb, profenofos, pyraclofos, pyridaphenthion, λ-cyhalothrin, deltamethrin, and imidacloprid were assayed by the leaf-dipping method. Tested thrips showed the highest susceptibility to methiocarb with an LC_(50) of less than 0.05 mg/ml. The LC_(50) value of pyridaphenthion was greater than 2.0 mg/ml, which was the lowest susceptibility of any insecticide tested. Formetanate had the highest resistance ratio of RR LC_(50) = 36, followed by pyridaphenthion with an RR LC_(50) = 21 when compared at different locations.