BAL ARILARINDA (Apis mellifera L.) İKİ ANALI KOLONİ YÖNETİMİNİN KOLONİ PERFORMANSI VE VARROA (Varroa destructor Anderson &Trueman) BULAŞIKLIK DÜZEYİNE ETKİSİ

This study was carried out to determine the effects of a colony management practice that uses two queens on colony performances and varroa infestation levels located in Erzurum throughout 2017. The average number of frames covered with bees was found to be 15.20 ± 0.84 for single-queen colonies and 21.75 ± 1.63 for two-queen colonies. The difference between the two groups in terms of frames covered with bees in May was not statistically significant, but the difference between the two groups in June, July and August was statistically significant (p < 0.01). The average amount of brood in sigle-queen and two-queen groups were found to be 4016.85 ± 508.65 and 5300.31 ± 380.73 cm 2 per colony, respectively. The difference between the two groups in terms of brood area was also very significant (p < 0.01). The average amount of honey obtained per colony in two-queen colonies was 22.74 ± 1.94 kg, whereas this value was found to be 15.76 ± 1.64 kg in single-queen colonies The average varroa infestation level of colonies were found 4.30±0.55% and 7.62±1.12% in the single-queen and two-queen colonies, respectively. The mean values, in term of varroa level, in May, June, July, and August were found 0.89±0.76%, 3.17±0.27%,  6.36±0.63% and 13.05±1.23% respectively.