scholarly journals COLOSS Survivors Task Force: Global Efforts to Improve Honey Bee Colony Survival

Bee World ◽  
2021 ◽  
pp. 1-3
Author(s):  
Raffaele Dall’Olio ◽  
Fanny Mondet ◽  
Alexis Beaurepaire ◽  
Martin Gabel ◽  
Barbara Locke ◽  
...  
Diversity ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 99 ◽  
Author(s):  
Hannes Oberreiter ◽  
Robert Brodschneider

We conducted a citizen science survey on overwinter honey bee colony losses in Austria. A total of 1534 beekeepers with 33,651 colonies reported valid loss rates. The total winter loss rate for Austria was 15.2% (95% confidence interval: 14.4–16.1%). Young queens showed a positive effect on colony survival and queen-related losses. Observed queen problems during the season increased the probability of losing colonies to unsolvable queen problems. A notable number of bees with crippled wings during the foraging season resulted in high losses and could serve as an alarm signal for beekeepers. Migratory beekeepers and large operations had lower loss rates than smaller ones. Additionally, we investigated the impact of several hive management practices. Most of them had no significant effect on winter mortality, but purchasing wax from outside the own operation was associated with higher loss rates. Colonies that reported foraging on maize and late catch crop fields or collecting melezitose exhibited higher loss rates. The most common Varroa destructor control methods were a combination of long-term formic acid treatment in summer and oxalic acid trickling in winter. Biotechnical methods in summer had a favourable effect on colony survival.


2011 ◽  
Vol 50 (3) ◽  
pp. 195-202 ◽  
Author(s):  
Bach Kim Nguyen ◽  
Magali Ribière ◽  
Dennis vanEngelsdorp ◽  
Chantal Snoeck ◽  
Claude Saegerman ◽  
...  

PLoS ONE ◽  
2017 ◽  
Vol 12 (3) ◽  
pp. e0172591 ◽  
Author(s):  
Antoine Jacques ◽  
Marion Laurent ◽  
Magali Ribière-Chabert ◽  
Mathilde Saussac ◽  
Stéphanie Bougeard ◽  
...  

Diversity ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 228
Author(s):  
Rositsa Shumkova ◽  
Ralitsa Balkanska ◽  
Tsvetoslav Koynarski ◽  
Peter Hristov

Honey bees (Apis mellifera L.) are crucial pollinators for many crops and natural ecosystems. However, honey bee colonies have been experiencing heavy overwinter mortality in almost all parts of the world. In the present study we have investigatеd, for the first time, the effects from the application of the herbal supplements NOZEMAT HERB® (NH) and NOZEMAT HERB PLUS® (NHP) on overwintering honey bee colony survival and on total protein and lysozyme content. To achieve this, in early autumn 2019, 45 colonies were selected and treated with these herbal supplements. The total protein and lysozyme content were evaluated after administration of NH and NHP twice the following year (June and September 2020). The obtained results have shown that both supplements have a positive effect on overwintering colony survival. Considerable enhancement in longevity of “winter bees” has been observed after the application of NHP, possibly due to the increased functionality of the immune system and antioxidant detoxification capacity. Although the mechanisms of action of NH and NHP are yet to be completely elucidated, our results suggest a new holistic approach on overwintering honey bee colony survival and welfare.


2021 ◽  
Author(s):  
Longtao Yu ◽  
Xinxin Shi ◽  
Xujiang He ◽  
Weiyu Yan ◽  
Xiaobo Wu

Abstract Queen is arguably the most important member of a honey bee colony, and queen quality is crucial for honey bee colony growth and development. In this study, queens were reared with eggs laid in queen cells (QE), eggs laid in worker cells (WE) and 2-day old larvae in worker cells (L). Those physiological indexes (the weight, thorax size and number of ovarioles) of newly reared queens in each group were measured. Moreover, the reproductive potential of the newly reared queens and foraging ability of worker bees laid by the newly reared queens in each group were further explored. In addition, we also examined whether maternal effects would be transmitted to the offspring queens in honey bee. We found that the weight, number of ovarioles and thorax weight of newly emerged queens in QE were significantly higher than those in WE and L, suggesting the reproductive potential was stronger in QE group than WE and L group. Furthermore, offspring worker bees and queens of QE queens had higher weight at emergence than those from the other two groups. This study proved profound honey bee maternal effects on queen quality, which can be transmitted to their offspring. Our results of the present study were important for improving queen quality and promoting the development of beekeeping and agriculture.


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