Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil

Citation
G. Moretto et Lj. De Mello, Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil, GENET MOL B, 22(3), 1999, pp. 321-323
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Molecular Biology & Genetics
Journal title
GENETICS AND MOLECULAR BIOLOGY
ISSN journal
1415-4757 → ACNP
Volume
22
Issue
3
Year of publication
1999
Pages
321 - 323
Database
ISI
SICI code
1415-4757(199909)22:3<321:VJIOAA>2.0.ZU;2-Z
Abstract
Different levels of infestation with the mite Varroa jacobsoni have been ob served in the various Apis mellifera races. In general, bees of European ra ces are more susceptible to the mite than African honey bees and their hybr ids. In Brazil honey bee colonies are not treated against the mite, though apparently both climate and bee race influence the mite infestation. Six mi xed colonies were made with Italian and Africanized honey bees. The percent age infestation by this parasite was found to be significantly lower in adu lt Africanized (1.69 +/- 0.44) than Italian bees (2.79 +/- 0.65). This rati o was similar to that found in Mexico, even though the Africanized bees tes ted there had not been in contact with varroa, compared to more than 20 yea rs of the coexistence in Brazil. However, mean mite infestation in Brazil o n both kinds of bees was only about a third of that found in Mexico.