Effect of acaricide resistance on reproductive ability of the honey bee mite Varroa destructor

The reproduction of pyrethroid-resistant Varroa destructor mite, a brood parasite of honey bees, was observed in Weslaco, Texas, and the results compared with known susceptible mite populations from other studies. Seven Apis mellifera colonies that had mite populations resistant to the acaricide Api...

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Bibliographic Details
Published in:Experimental & applied acarology 2002-01, Vol.27 (3), p.195-207
Main Authors: MARTIN, Stephen J, ELZEN, Patti J, RUBINK, William R
Format: Article
Language:English
Subjects:
Acaricides
Animal productions
Animals
Apiculture
Bees - parasitology
Biological and medical sciences
Ectoparasites
Eggs
Fundamental and applied biological sciences. Psychology
Honey
Insecta
Insecticide Resistance
Insecticides - pharmacology
Invertebrates
Mites
Mites - drug effects
Mites - physiology
Offspring
Pyrethroids
Reproduction
Terrestrial animal productions
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Summary:The reproduction of pyrethroid-resistant Varroa destructor mite, a brood parasite of honey bees, was observed in Weslaco, Texas, and the results compared with known susceptible mite populations from other studies. Seven Apis mellifera colonies that had mite populations resistant to the acaricide Apistan were used. Pyrethroid-resistance was confirmed when only 17% rather than 90% of mites confined in dishes containing Apistan died after 12 h of exposure. The average number of eggs laid by resistant mites invading worker and drone cells was 4.4 and 5.4 respectively. This is similar to the number of eggs laid by susceptible mites in worker (4.4-4.8) or drone (4.7-5.5) cells. Also the average number of fertilised V. destructor female mites produced by resistant mites in worker (1.0) and drone (2.1) cells were similar to the number produced by susceptible mites in worker (0.9) and drone (1.9-2.2) cells. In addition, no major differences between the resistant and susceptible mite populations were observed in either worker or drone cells when six different reproductive categories and offspring mortality rates were compared. Therefore, it appears that there is little or no reproductive fitness cost associated with pyrethroid resistance in V. destructor in Texas.
ISSN:0168-8162
1572-9702
DOI:10.1023/A:1021675614116