scholarly journals The Effects of Varroa (Varroa destructor) Infestation Level on Wintering Ability and Survival Rates of Honeybee (Apis mellifera L.) Colonies

2011 ◽  
Vol 10 (11) ◽  
pp. 1427-1430 ◽  
Author(s):  
Ethem Akyol ◽  
Halil Yeninar
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor ◽  
Survival Rates ◽  
Infestation Level

scholarly journals Correction: Floris, I., et al. How the Infestation Level of Varroa destructor Affects the Distribution Pattern of Multi-Infested Cells in Worker Brood of Apis mellifera. Veterinary Science 2020, 7, 136

2020 ◽  
Vol 7 (4) ◽  
pp. 202
Author(s):  
Ignazio Floris ◽  
Michelina Pusceddu ◽  
Alberto Satta
Keyword(s):  
Apis Mellifera ◽  
Distribution Pattern ◽  
Varroa Destructor ◽  
Infestation Level ◽  
Veterinary Science ◽  
Journal Editorial ◽  
Worker Brood

We have recently been made aware by the reviewer and the Journal Editorial Offices of the following weaknesses in our recent paper [...]

scholarly journals Behavioral Genetics of the Interactions between Apis mellifera and Varroa destructor

Insects ◽  
2019 ◽  
Vol 10 (9) ◽  
pp. 299 ◽  
Author(s):  
Alexis Beaurepaire ◽  
Christina Sann ◽  
Daniela Arredondo ◽  
Fanny Mondet ◽  
Yves Le Conte
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor ◽  
Behavioral Genetics ◽  
Control Strategies ◽  
Reproductive Status ◽  
Infestation Level ◽  
Microsatellites Markers ◽  
Reproductive Phase ◽  
Mite Control ◽  
Infestation Status

The western honeybee Apis mellifera exhibits a diverse set of adaptations in response to infestations by its most virulent disease-causing agent, the ectoparasitic mite Varroa destructor. In this study, we investigated the effect of honeybee pupae genotype on the expression of four host and parasite traits that are associated with the reproductive phase of the mite in the brood of its host. We first phenotyped cells containing bee pupae to assess their infestation status, their infestation level, the reproductive status of the mites, and the recapping of cells by adult workers. We then genotyped individual pupae with five microsatellites markers to compare these phenotypes across full sister groups. We found that the four phenotypes varied significantly in time but did not across the subfamilies within the colonies. These findings show that V. destructor mites do not differentially infest or reproduce on some particular honeybee patrilines, and that workers do not target preferentially specific pupae genotypes when performing recapping. These findings bring new insights that can help designing sustainable mite control strategies through breeding and provide new insights into the interactions between A. mellifera and V. destructor.

УГРОЗЫ РАСПРОСТРАНЕНИЯ ВИРУСНЫХ ИНФЕКЦИЙ У ПЧЕЛ (Apis mellifera L.) И РОЛЬ КЛЕЩА Varroa destructor В РАЗВИТИИ ПАТОЛОГИЙ

2016 ◽  
Vol 51 (2) ◽  
pp. 156-171
Author(s):  
А.В. СПРЫГИН ◽  
◽  
Ю.Ю. БАБИН ◽  
Е.М. ХАНБЕКОВА ◽  
Л.Е. РУБЦОВА ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor

Eficacia del humo de frutos de Guazuma ulmifolia (Sterculiaceae) y vapores de timol para el control de Varroa destructor infestando abejas africanizadas

2019 ◽  
Vol 10 (3) ◽  
pp. 778-788
Author(s):  
William De Jesús May-Itzá ◽  
Luis Abdelmir Abdelmir Medina Medina
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor ◽  
Guazuma Ulmifolia

Se evaluó la eficacia del humo de los frutos secos de Guazuma ulmifolia y los vapores de timol en el control del ácaro Varroa destructor infestando colonias de abejas africanizadas (Apis mellifera) de Yucatán. Se utilizaron tres tratamientos: Grupo 1 (G1), las colonias de abejas recibieron 5 a 8 bocanadas de humo de los frutos secos de G. ulmifolia dos veces por semana, durante un período de tres semanas; Grupo 2 (G2), las colonias recibieron 4-8 g de cristales de timol con tres aplicaciones cada siete días, y Grupo 3 (G3 o grupo control) las colonias no recibieron ningún tratamiento durante las tres semanas del experimento. Se colectaron 200 a 300 abejas adultas de cada colonia previo a la aplicación de los tratamientos (día 0) y a los 7, 14 y 21 días después de las aplicaciones, con la finalidad de determinar los niveles de infestación y eficacia de los tratamientos. Los resultados indican que los niveles de infestación de V. destructor en las abejas adultas disminuyeron al final del experimento (21 días) y fueron estadísticamente diferentes para los tres tratamientos, siendo menor para G2. La eficacia al final de los tratamientos fue de 41 y 69 %, para G1 y G2, respectivamente. Estos resultados corroboran que la aplicación de cristales de timol es una alternativa para el control del ácaro V. destructor en Yucatán, y que la aplicación del humo de los frutos secos de G. ulmifolia reduce los niveles de infestación de este parásito en comparación con las colonias que no recibieron ningún tipo de tratamiento (G3).

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.

scholarly journals Genomic survey of the ectoparasitic mite Varroa destructor, a major pest of the honey bee Apis mellifera

BMC Genomics ◽  
2010 ◽  
Vol 11 (1) ◽  
Author(s):  
R Scott Cornman ◽  
Michael C Schatz ◽  
J Spencer Johnston ◽  
Yan-Ping Chen ◽  
Jeff Pettis ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Varroa Destructor ◽  
Major Pest

scholarly journals Weight loss in drone pupae (Apis mellifera) multiply infested by Varroa destructor mites

Apidologie ◽  
2003 ◽  
Vol 34 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Pedro Duay ◽  
David De Jong ◽  
Wolf Engels
Keyword(s):  
Weight Loss ◽  
Apis Mellifera ◽  
Varroa Destructor
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