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GÜVENÇ, OSMAN
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YayınAçık Erişim
The role of inverted sugar syrup in enhancing sealed brood quantity and bee colony productivity in warre hives
(Bursa Uludağ Üniversitesi, 2025-10-18) Tsvetan Tsvetanov; Ralitsa Balkanska
The primary aim of this study is to evaluate the impact of inverted sugar syrup supplementation on sealed brood quantity and colony strength in Warre hives, compared to traditional sucrose syrup feeding. The experiment consisted of 14 honey bee colonies, equally distributed between the control group (n = 7) and the experimental group (n = 7). The bee colonies were established at an apiary near Tran, Pernik region, Bulgaria. Our study shows that bee colonies fed inverted sugar syrup had significantly higher average values of sealed worker brood and colony strength compared to those in the control group from April to October in Warre hives. While these short-term results are promising and positive, long-term studies could reveal more about the lasting effects on bee health and productivity in this hive system. These results can help beekeepers choose better feeding strategies to maintain healthy and strong bee colonies in regions with insufficient pasture.
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YayınAçık Erişim
Effects of concentrations of sugar, vitamins, and amino acıds on survival and tolerance of honey bees to lowtemperature stress
(Bursa Uludağ Üniversitesi, 2025) Elgebaly, Heba I.; Nassar, Atef M.K.; Adnan A.E. Darwish; Abou-Shaara, Hossam F.
Honey bees (Apis mellifera) may experience brief periods of cold stress, particularly in autumn and winter. Meanwhile, beekeepers often supplement their colonies with artificial nutrition during these periods. This practice can expose honey bees to varying sucrose concentrations, vitamins, and amino acids in their diet. Therefore, this study examines how these nutritional components influence the honey bees' ability to withstand cold stress in laboratory settings. This study comprised three subexperiments: I) Comparing three concentrations (40%, 60%, and 80%) of sugar syrup + water as control group, II) Comparing three concentrations (0.02%, 0.06%, and 0.12% (equivalent to 10, 30, and 60 μL / 50 mL of 60% sugar syrup) of vitamins + 60% sugar syrup only as control group, and III) Comparing three concentrations (0.02%, 0.06%, and 0.12% (equivalent to 10, 30, and 60 μL / 50 mL of 60% sugar syrup) of amino acids/vitamins mixture + 60% sugar syrup only as control group. The concentration of 60% sugar syrup was selected as the solvent for vitamins and amino acids/vitamins mixture because preliminary sucrose experiments showed that 60% provided the highest cold stress tolerance. Three parameters were used to evaluate the ability of honey bees to withstand cold stress conditions: time until narcosis, time until recovery, and survival after recovery. Bees were exposed to 4°C until narcosis and then transferred to room temperature (25 ± 1 °C) for recovery. The results showed that bees fed on 60% sugar syrup performed better in terms of the measured parameters compared to other concentrations or the control group. Supplementation of sugar syrup with vitamins had an impact on the measured parameters, showing superior results in the vitamin 0.06% (30 μL/50 mL) group. Regarding the amino acids/vitamins mixture, some improvements in the ability of honey bees to tolerate cold stress conditions were recorded. This study provides insights into the effects of nutrition on honey bees' tolerance to low-temperature stress, laying the groundwork for further research.
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YayınAçık Erişim
First molecular detection of the acute bee paralyses virus (abpv) of the honey bee (apis mellifera L.) in Azerbaijan
(Bursa Uludağ Üniversitesi, 2025-10-14) Gazi, Rafiga
Almost all regions of Azerbaijan are engaged in beekeeping. There is a significant demand for bee products. In recent years, there has been an increase in the number of bee deaths in the country, and cases such as bees not returning home. While monitoring the beehives in the areas where we conducted the research, cases such as the loss of the ability to fly and tremors were observed in the bees. As a result of PCR analysis, the ABPV virus was detected for the first time in the materials collected from the North-East and South-East regions of Azerbaijan. The highest prevalence was recorded in Guba region of the North-East zone of the country (62.5%) and Astara region of the SouthEast zone (75%). In the North-East zone, the least infection was found in the samples taken from Shabran region, and in the South-East zone, in Masalli. The study revealed that almost 40% of ABPV cases were concentrated in the eastern part of the country.