Naslov
Comparison of the two different methods for determining the level of V. destructor invasion in A. m. carnica colonies

Autori
Šekulja, Damir ; Ivančić, T. ; Ljubović, V

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
60. Tagung der Arbeitsgemeinschaft der Institute für Bienenforschung e.V. / Härtel, Stephan - Würzburg : Universität Würzburg, Lehrstuhl für Tierökologie und Tropenbiologie, 2013, 72-72

Skup
60. Tagung der Arbeitsgemeinschaft der Institute für Bienenforschung e.V.

Mjesto i datum
Würzburg, Njemačka, 19.03.2013. - 21.03.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
varroa destructor, invasion, level, determining

Sažetak
Comparison of the two different methods for determining the level of V. destructor invasion in A. m. carnica colonies - Vergleich der Genauigkeit zwei unterschiedlicher Methoden zur Bestimmung der Invasion von V. destructor in A. m. carnica Völker T. Ivančić, V. Ljubović, Damir Šekulja (Rijeka) To conclude if the treatment against V.destructor in brood right A.m.carnica colonies is efficient, and, if in local beekeeping conditions in Rijeka (Croatia), bees could be left untreated until the brood-less period, during the last few years a method described by Büchler et al, ADIZ, 7/2006 was successfully used. According to it, a sample of approximately 30 g of bees was collected before the treatment and after the recommended treatment period. If the percentage of V.destructor invasion was lower than 2%, then additional treatment was not needed. Recently, a new method was described by Büchler et al, ADIZ, 8/2011. According to this method, collected bee samples were not sacrificed, but were instead (after being powdered with sugar) returned back to their original colonies. As the first method required approximately 600 bees per colony, the storage of samples in a deep freezer, and time consuming laboratory work in the cases when many samples needed to be processed, the new method was instantly well accepted amongst the beekeepers. However, from a practical point of view, it was necessary to check in Rijeka’s climate, under the same conditions, whether both methods would provide the beekeeper with equal or at least similar results. On five different apiaries, approximately ten bee samples were tested in parallel (before and after Check Mite + treatment) by both methods. By the old method, the average invasion level was 0.76% before and 0.04% after the treatment, and by the new method it was 0.77% before and 0.03% after the treatment. According to the obtained results, it could be concluded that the percentage of V.destructor invasion registered by both methods was not significantly different. The last method has proven to be more weather related, because it was difficult or practically impossible to perform in rainy or windy weather. The field work was also prolonged. On the other hand, the results were immediate, and the new method required no sacrificing of bees.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne biotehničke znanosti

POVEZANOST RADA