Variation in the parasitic bee mite Varroa jacobsoni Oud.

Free access article

Issue		Apidologie Volume 31, Number 2, March-April 2000 Taxonomy and Evolutionary biology of the Honeybees


Page(s)		281 - 292
DOI		10.1051/apido:2000122

DOI: 10.1051/apido:2000122

Apidologie 31 (2000) 281-292

Variation in the parasitic bee mite Varroa jacobsoni Oud.

Denis L. Anderson

CSIRO Entomology, G.P.O. Box 1700, Canberra, ACT 2601, Australia

Abstract:

Initial searches found little evidence of genotypic or phenotypic variance in the parasitic bee mite Varroa jacobsoni, despite numerous reports of significant variation in the mite's reproductive behaviour on its adopted host Apis mellifera. However, in a recent search that employed DNA sequencing techniques and large numbers of V. jacobsoni collected from the mites' native host A. cerana throughout Asia, a remarkable amount of genetic variation was observed. Subsequent analysis of this variation, coupled with follow-up morphological and ecology-based studies, showed that V. jacobsoni was a species complex. Other work carried out as part of that study also showed that only two out of 18 genetically different mites within the complex have switched host to A. mellifera and become a pest of this bee worldwide. These two mites are not V. jacobsoni as has been assumed, but they belong to a group of mites that naturally infest specific populations of A. cerana on mainland Asia. These mites will soon be renamed as a new species. This and other reports of variation in V. jacobsoni are reviewed and discussed.

Keywords: Varroa jacobsoni / morphological variation / reproductive variation / genetic variation / Apis mellifera / A. cerana

Correspondence and reprints: Denis L. Anderson
E-mail: denisa@ento.csiro.au

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