Does the Spatial Distribution of the Parasitic Mite Varroa jacobsoni Oud. (Mesostigmata: Varroidae) in Worker Brood of Honey Bee Apis Mellifera L. (Hymenoptera: Apidae) Rely on an Aggregative Process?

1999 ◽  
Vol 86 (11) ◽  
pp. 540-543 ◽  
Author(s):  
M. Salvy ◽  
Y. Capowiez ◽  
Y. Le Conte ◽  
M. Salvy ◽  
J.-L. Clément
Keyword(s):  
Spatial Distribution ◽  
Apis Mellifera ◽  
Honey Bee ◽  
Varroa Jacobsoni ◽  
Parasitic Mite ◽  
Worker Brood

scholarly journals OCCURRENCE OF ACUTE PARALYSIS VIRUS OF THE HONEY BEE (APIS MELLIFERA) IN A HUNGARIAN APIARY INFESTED WITH THE PARASITIC MITE VARROA JACOBSONI

1999 ◽  
Vol 47 (3) ◽  
pp. 319-324 ◽  
Author(s):  
L. Békési ◽  
Brenda V. Ball ◽  
M. Dobos-Kovács ◽  
T. Bakonyi ◽  
M. Rusvai
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Clinical Symptoms ◽  
Varroa Jacobsoni ◽  
Infected Adult ◽  
Long Time ◽  
Parasitic Mite ◽  
Ultrathin Sections ◽  
The Relationship ◽  
Paralysis Virus

Viruses of the honey bee have been known for a long time; however, recently the attention of scientists and apiculturalists has turned towards the relationship between these viruses and the parasitic miteVarroa jacobsoni. Although clinical symptoms indicated the presence of some of the viruses of bees in Hungary, none have previously been isolated or identified. During July unusual adult bee and brood mortality was observed in some colonies of an apiary in Budapest known to be infested withVarroa jacobsoni. Large amounts of acute paralysis virus (APV) were detected serologically in healthy honey bee pupae killed by the injection of a bacteria-free extract of diseased adult bees. Crystalline arrays of 30 nm particles were seen in ultrathin sections of the tissues of injected pupae and naturally infected adult bees. In spite of the application of acaricide treatments the bee population in several colonies had collapsed by the end of summer and the apiary suffered severe wintering losses.

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

1999 ◽  
Vol 22 (3) ◽  
pp. 321-323 ◽  
Author(s):  
Geraldo Moretto ◽  
Leonidas João de Mello Jr.
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Mite Infestation ◽  
Varroa Jacobsoni ◽  
Africanized Honey Bees ◽  
African Honey Bees ◽  
Africanized Bees ◽  
Bee Colonies ◽  
Different Levels

Different levels of infestation with the mite Varroa jacobsoni have been observed in the various Apis mellifera races. In general, bees of European races are more susceptible to the mite than African honey bees and their hybrids. In Brazil honey bee colonies are not treated against the mite, though apparently both climate and bee race influence the mite infestation. Six mixed colonies were made with Italian and Africanized honey bees. The percentage infestation by this parasite was found to be significantly lower in adult Africanized (1.69 ± 0.44) than Italian bees (2.79 ± 0.65). This ratio was similar to that found in Mexico, even though the Africanized bees tested there had not been in contact with varroa, compared to more than 20 years of the coexistence in Brazil. However, mean mite infestation in Brazil on both kinds of bees was only about a third of that found in Mexico.

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