مطالعه اثر اسيد فرميك بر كنه و اروآ دورن سلولهاي مرحله شفيرگي زنبور عسل

The survey of formic acid effects on varroa mite Varroa destructor A.&T. in sealed brood cells of honey bee

The ectoparasite varroa reproduction is only in the honey bee capped brood cells. Chemicals materials had been used to control parasitic bee mites, such as formic acid. In this survey , influence of formic acid 65% on varroa mites mortality in sealed broods of honey bee considered in incubator . The combs ( sealed broods) selected from infested colonies , and divided to three groups : 1 - treated with acid at 24 h , 2 - treated with acid at 96 h , and 3 - control at 96 h . The combs incubated in 32 oC and 50 Rh% . Then , sealed broods with and without mites , alive and dead mites counted. The data were analysed (p < 0.05 ) and it was show that mean of number of cells with dead mites for treatments were 15.83 , 56.32 and 7.36 % , respectively . The second and the third treatments had significant difference . But did not have significant different between the first and the second , and between the first and control. Results showed that formic acid as during applied effectively 89% kills mother and nymphs of mites in sealed brood cells , during 96 h .