Türkiye Entomoloji Dergisi
Yazarlar: Aida AYUBI, Gholamhossein MORAVVEJ, Javad KARIMI
Konular:-
Anahtar Kelimeler:Chrysoperla carnea,Imidacloprid,Lufenuron,Thiametoxam,Thiodicarb
Özet: Chrysoperla carnea (Stephens) is a general biocontrol agent of several insect pests in greenhouses. The lethal effects of four compounds, imidacloprid, lufenuron, thiametoxam and thiodicarb, on the eggs and 1st instar larvae of C. carnea were studied in laboratory conditions. Dipping bioassay tests were used for eggs and the residual contact method for larvae. Positive relationships were detected between the concentrations of insecticides and mortality rates of various stages. However, there were considerable variations in toxicity of insecticides. Thiodicarb had no effect on eggs, whereas thiametoxam with an LC50 value of 1.90 μg ai. L-1 showed the highest ovicidal activity. On larvae, thiametoxam was the most toxic (LC50= 0.55 μg ai. L-1) and lufenuron proved to be the least toxic (LC50 = 44.02 μg ai. L-1). The use of thiametoxam should be carefully evaluated if employed in combination with C. carnea in IPM programs