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- Title
TÜRKİYE'DE VARROA DESTRUCTOR İLE DOĞL ENFESTE BAL ARISI KOLONİLERİNDE APIVAR'IN (AMİTRAZ) ETKİSİ.
- Authors
Aydin, Levent; Gırışgın, A. Onur
- Abstract
Goal: This study was carried out to compare the efficacy of Apivar (Amitraz) against Varroa destructor in naturally infested honeybee colonies with bottom pollen trap hives in fall season. Materials and Methods: Anatolian honey bee (Apis meilifera anatoliaca) was used to perform the experiments. In October-November 2009, forty colonies were divided into two groups (each group containing 20 colonies with pollen traps) in Bursa province. Before and after treatments, about 200 bees from outer frames were collected into jars containing cotton with diethyl ether to determine the infestivity rate of Varroa (Shimanuki and Knox, 2000). Aliquoted bees and mites were counted in petri dishes. The pollen trap hives with drawer (5 cm deep covered with white paper) at the bottom were used with 3.5 mm screen to isolate falling Varroa mites from the bees. Varroa mites were counted for each colony and groups will be equalized for Varroa mite level. Group one was treated with Apivar. The second group was kept as control. Varroa mites were counted on day 0 (before treatment), 1, 5, 7, 14, 21, 28, 35 and 42 in pollen drawers. Results and Conclusion: The efficacy of Apivar was detected from two formulas. One of them is Henderson -Tilton's formula: So efficacy of Apivar for Henderson-Tilton Formula was: Corrected % = (1 - n1×n2/n3×n4)×100 n1= Mite count before treatment in control group n2= Mite count after treatment in treatment group n3= Mite count after treatment in control group n4= Mite count before treatment in treatment group Corrected % = (1 - 77.10×0.50/86.65×78.75)×100= %99.4 Second Formula to detect effectiveness of Apivar is percentage changing method which based on differantiation of mean mite percentages on bees before and after treatment: % Effectiveness =%n 5 - %n 6/ %n5 ×100 n5= Percentage of mites on bees before treatment n6= Percentage of mites on bees after treatment So efficacy of Apivar for percentage changing method was: %Effektivness = 39.37-0.25/ 39.37 × 100 = 99.36% Importance between Apivar and control group was determined .via one way Anova analysis ahd data were presented. There was a significant importance between Apivar and control groups according to statistic at level of 0.05. For Apivar group, 8838 Varroa mites were found in pollen drawers in 42 days and 57% of the fallen mites were dead in 48 hours .1923 Varroa mites were found in control group in pollen drawers and 13% of the fallen mites were found dead in pollen drawers. The efficacy of Apivar was determined by Henderson-Tilton method (Tutkun ve İnci 1985) and Second Formula to detect effectiveness of Apivar is percentage changing method which based on differantiation of mean mite percentages on bees before and after treatment. Efficacy of Apivar (Amitraz) were found 99.43 % and 99.36 % respectively. No side effects were observed on bees for Apivar.
- Subjects
BURSA (Turkey); TURKEY; VARROA; HONEYBEES; BEE colonies; ETHER (Anesthetic); MITES
- Publication
Uludag Bee Journal, 2010, Vol 10, Issue 3, p96
- ISSN
1303-0248
- Publication type
Article