Apidologie (1993) 24, 375-382

P. Rosenkranz, N.C. Tewarson, A. Rachinsky, A. Strambi, C. Strambi and W. Engels (1993)
Juvenile hormone titer and reproduction of Varroa jacobsoni in capped brood stages of Apis cerana indica in comparison to Apis mellifera ligustica
Apidologie 24 (4), 375-382
Abstract: The juvenile hormone (JH) III hemolymph titer of late larval and early pupal stages as determined by radioimmunoassay (RIA) does not differ significantly in Apis cerana and Apis mellifera, particularly in freshly-sealed worker brood. In drone brood, slightly higher JH III hemolymph concentrations were recorded. These results do not agree with the hypothesis that reproduction of the parasitic bee mite Varroa jacobsoni is regulated by host-derived JH. After checking over a thousand capped brood cells containing pupae, it was confirmed that in Apis cerana colonies fertility of female mites is restricted to drone hosts.
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Varroa destructor