Queen survival and oxalic acid residues in sugar stores after summer application against Varroa destructor in honey bees (Apis mellifera)

2012 ◽  
Vol 51 (3) ◽  
pp. 271-276
Author(s):  
Bram Cornelissen ◽  
Jeroen Donders ◽  
Pam van Stratum ◽  
Tjeerd Blacquière ◽  
Coby van Dooremalen
Keyword(s):  
Apis Mellifera ◽  
Oxalic Acid ◽  
Honey Bees ◽  
Varroa Destructor

scholarly journals Exploring Two Honey Bee Traits for Improving Resistance Against Varroa destructor: Development and Genetic Evaluation

Insects ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 216
Author(s):  
Matthieu Guichard ◽  
Benoît Droz ◽  
Evert W. Brascamp ◽  
Adrien von Virag ◽  
Markus Neuditschko ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Field Trial ◽  
Genetic Evaluation ◽  
Phenotypic Correlation ◽  
Apis Mellifera Mellifera ◽  
Novel Traits ◽  
Resistance Traits

For the development of novel selection traits in honey bees, applicability under field conditions is crucial. We thus evaluated two novel traits intended to provide resistance against the ectoparasitic mite Varroa destructor and to allow for their straightforward implementation in honey bee selection. These traits are new field estimates of already-described colony traits: brood recapping rate (‘Recapping’) and solidness (‘Solidness’). ‘Recapping’ refers to a specific worker characteristic wherein they reseal a capped and partly opened cell containing a pupa, whilst ‘Solidness’ assesses the percentage of capped brood in a predefined area. According to the literature and beekeepers’ experiences, a higher recapping rate and higher solidness could be related to resistance to V. destructor. During a four-year field trial in Switzerland, the two resistance traits were assessed in a total of 121 colonies of Apis mellifera mellifera. We estimated the repeatability and the heritability of the two traits and determined their phenotypic correlations with commonly applied selection traits, including other putative resistance traits. Both traits showed low repeatability between different measurements within each year. ‘Recapping’ had a low heritability (h2 = 0.04 to 0.05, depending on the selected model) and a negative phenotypic correlation to non-removal of pin-killed brood (r = −0.23). The heritability of ‘Solidness’ was moderate (h2 = 0.24 to 0.25) and did not significantly correlate with resistance traits. The two traits did not show an association with V. destructor infestation levels. Further research is needed to confirm the results, as only a small number of colonies was evaluated.

Evaluating the Efficacy of Oxalic Acid Vaporization and Brood Interruption in Controlling the Honey Bee Pest Varroa destructor (Acari: Varroidae)

2020 ◽  
Vol 113 (2) ◽  
pp. 582-588
Author(s):  
Cameron J Jack ◽  
Edzard van Santen ◽  
James D Ellis
Keyword(s):  
Oxalic Acid ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Cost Effective ◽  
Positive Control ◽  
Management Approach ◽  
Control Methods ◽  
Treatment Groups ◽  
Colony Management ◽  
Varroa Control

Abstract A successful Integrated Pest Management approach to Varroa destructor Anderson and Trueman control in managed colonies of western honey bees Apis mellifera Linnaeus (Hymenoptera: Apidae) must be an improvement over conventional control methods and include cost-effective treatments that can be readily employed by beekeepers. Herein, we tested the efficacy of oxalic acid (OA) vaporization and brood interruption as Varroa controls. Sixty experimental colonies were randomly assigned to one of six treatment groups with 10 colonies per group. The six treatments were: 1) OA applied once, 2) OA applied three times, 3) brood interruption, 4) OA applied once + brood interruption, 5) OA applied three times + brood interruption, and 6) no OA or brood interruption. The OA was applied via vaporization, with each application being 1 g OA applied through the hive entrance (label rate), on the bottom board. Brood interruption was accomplished by caging a colony’s queen in a queen cage for a period of 24 d. An additional 10 colonies were treated with amitraz (Apivar - positive control). Varroa levels were estimated before, during, and after treatment applications using sticky boards left in colonies for 3 d. Our data suggest that queen caging to achieve brood interruption during the fall season can negatively impact colony strength and survival. We observed high colony mortality in some treatments, despite diligent colony management to alleviate the side effects of the treatments. Colonies treated with amitraz were healthier and had better survival than those treated with OA vaporization. In conclusion, OA and/or brood interruption did not provide sufficient Varroa control.

scholarly journals Factors restraining the population growth of Varroa destructor in Ethiopian honey bees (Apis mellifera simensis)

PLoS ONE ◽  
2019 ◽  
Vol 14 (9) ◽  
pp. e0223236 ◽  
Author(s):  
Haftom Gebremedhn ◽  
Bezabeh Amssalu ◽  
Lina De Smet ◽  
Dirk C. de Graaf
Keyword(s):  
Apis Mellifera ◽  
Population Growth ◽  
Honey Bees ◽  
Varroa Destructor

Differential responses of Africanized and European honey bees (Apis mellifera) to viral replication following mechanical transmission or Varroa destructor parasitism

2015 ◽  
Vol 126 ◽  
pp. 12-20 ◽  
Author(s):  
Mollah Md. Hamiduzzaman ◽  
Ernesto Guzman-Novoa ◽  
Paul H. Goodwin ◽  
Mariana Reyes-Quintana ◽  
Gun Koleoglu ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Viral Replication ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Mechanical Transmission ◽  
Differential Responses

Genetic bases of tolerance to Varroa destructor in honey bees (Apis mellifera L.)

2014 ◽  
Vol 61 (3) ◽  
pp. 207-215 ◽  
Author(s):  
E. Zakar ◽  
A. Jávor ◽  
Sz. Kusza
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Genetic Bases

scholarly journals Regular dorsal dimples and damaged mites of Varroa destructor in some Iranian honey bees (Apis mellifera)

2011 ◽  
Vol 54 (3) ◽  
pp. 261-268 ◽  
Author(s):  
Masoud M. Ardestani ◽  
Rahim Ebadi ◽  
Gholamhossein Tahmasbi
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Varroa Destructor

scholarly journals Swarming in honey bees (Apis mellifera) and Varroa destructor population development in Sweden

Apidologie ◽  
2003 ◽  
Vol 34 (4) ◽  
pp. 389-397 ◽  
Author(s):  
Ingemar Fries ◽  
Henrik Hansen ◽  
Anton Imdorf ◽  
Peter Rosenkranz
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Population Development

scholarly journals Changes in the reproductive ability of the mite Varroa destructor (Anderson e Trueman) in africanized honey bees (Apis mellifera L.) (Hymenoptera: Apidae) colonies in southern Brazil

2007 ◽  
Vol 36 (6) ◽  
pp. 949-952 ◽  
Author(s):  
Francisco E. Carneiro ◽  
Rogelio R. Torres ◽  
Roger Strapazzon ◽  
Sabrina A. Ramírez ◽  
José C.V. Guerra Jr ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Varroa Destructor ◽  
Southern Brazil ◽  
Africanized Honey Bees ◽  
Reproductive Ability
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