Controlling varroa mites infesting honeybees (Apis mellifera L.) Using some essential oils and amitraz under colony conditions

Aljedani, Dalal Musleh

doi:10.22271/j.ento.2021.v9.i6a.8870

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…The toxicity of essential oils to mites and bees was evaluated under laboratory and field conditions ( Ghasemi et al , 2016 , Hýbl et al , 2021 ), as well as the repellent or attractive effect of these extracts toward mites, and their effects on mite reproduction ( Colin, 1990 ; Imdorf et al , 1995 , 1999 ; Elzen et al , 2000 ; Aljedani, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Some essential oils as potential control agents for varroa mite (Varroa destructor) in infected honey bees (Apis mellifera)

Elsadi,

Keshlaf,

Mirwan

2024

Open Vet J

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Background: Ecto-parasite, varroa mite, (Varroa destructor), is the primary pest affecting the apiculture sector globally in various regions. Aim: This study examined the toxicity of nine essential oils to Apis mellifera L. and the acaricidal impact of those oils against Varroa destructor. Methods: The acaricidal effects of nine essential oils, extracted from plant materials were used.In the screening experiment, 10 mg of the active ingredients of the plant material extracts were prepared in an alcohol solution with concentrations of 5, 10, and 15%. For each type of plant extract, 5 female V. destructor were transferred to a petri dish with 5 worker bees incubated at 70% humidity and 33–34°C for 2 days, for each treatment four replicates were used compared to the control. Forty-eight hours following treatment, the number of dead and live mites was counted to determine the mortality rate. In the second assay experiment, the best five essential oils of the previous experiment were selected to re-assess their effectiveness on varroa mites and honeybee workers by using concentration 15%. Five females of V. destructor were transferred to a Petri dish with 10 adult bees and treated with the solution of the selected oils. Five replicates and control treatments were taken for each sample simultaneously. Dead and live bees were counted for each replicate at 48 hours after treatment. Results: There were no significant differences between the concentrations used of each oil on the rate of death mites, and its effectiveness ranged between 70.0 to 53.3% compared to the control groups. Additionally, the best oil used was the bitter melon, with a death rate of 80% at a concentration of 15%, while peppermint oil showed the lowest death rate of 45% at a concentration of (5%). However, all these treatments were statistically highly significant compared with the natural death rate in control (2%). In the second test, the results of the statistical analysis indicated that there were highly significant differences (P0.05<0.0001) in the average numbers of dead varroa mites compared to the control when using a 15% concentration of five selected oils. On the other hand, there was no statistically significant difference in the honey bee workers mortality rate between the treatment and control groups (P0.05<0.3390), and it was relatively low for all treatments except the basil oil, where the bee mortality rate was 16% compared to the control (10%). Conclusion: It is clear from this experiment that bitter melon oil can be used to control varroa mites and it can be considered safe for honey bees as well as for the environment.

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Section: Introductionmentioning

confidence: 99%

Some essential oils as potential control agents for varroa mite (Varroa destructor) in infected honey bees (Apis mellifera)

Elsadi,

Keshlaf,

Mirwan

2024

Open Vet J

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IMPACT OF ACARICIDES ON VARROA DESTRUCTOR INFESTATION IN HONEY BEE COLONIES (Apis mellifera L.) AND THEIR HISTOLOGICAL EFFECTS ON HYPOPHARYNGEAL GLANDS

Salem,

El-sayıed,

Amro

et al. 2024

Uludağ Arıcılık Dergisi

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This study aimed to determine the random role of some acaricides, which are the most commonly used in Egypt for controlling Varroa destructor on Hypopharyngeal Glands of honeybee. The acaricides used in this study were Varroakiller, Menthocaros, Amitraz, Varroby, and formic acid. Results showed that the total number of fallen mites was 53.5, 47, 28.6, 26, and 24.5 for Varroakiller, Menthocaros, Amitraz, Varroby, and formic acid, respectively, compared to 16 mites in the control group. For sealed worker brood areas (SWBA), the treatments included Varroakiller (129.125 in2), formic acid (90.125 in2), Varroby (87.50 in2), Menthocaros (51.07 in2), and Amitraz (40.05 in2), while the SWBA for control colonies was 17.65 in2. Histological studies of the hypopharyngeal gland showed that although, Varroakiller effectively controlled Varroa mites and had no direct impact on worker bees or egg-laying areas, it considerably impacted the hypopharyngeal glands, which could ultimately affect the bee colony. Moreover, formic acid recorded a lower number of fallen Varroa with acceptable outcomes for egg-laying areas and sealed workers. This, coupled with the fact that formic acid was deemed the most significant due to its effectiveness over a short period, resulted in a reduction percentage of 100% after 24 days.

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Controlling varroa mites infesting honeybees (Apis mellifera L.) Using some essential oils and amitraz under colony conditions

Cited by 2 publications

References 24 publications

Some essential oils as potential control agents for varroa mite (Varroa destructor) in infected honey bees (Apis mellifera)

Some essential oils as potential control agents for varroa mite (Varroa destructor) in infected honey bees (Apis mellifera)

IMPACT OF ACARICIDES ON VARROA DESTRUCTOR INFESTATION IN HONEY BEE COLONIES (Apis mellifera L.) AND THEIR HISTOLOGICAL EFFECTS ON HYPOPHARYNGEAL GLANDS

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