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Titolo:
Varroa jacobsoni infestation of adult Africanized and Italian honey bees (Apis mellifera) in mixed colonies in Brazil
Autore:
Moretto, G; de Mello, LJ;
Indirizzi:
Univ Reg Blumenau, Ctr Ciencias Exatas & Nat, BR-89100971 Blumenau, SC, Brazil Univ Reg Blumenau Blumenau SC Brazil BR-89100971 BC1 Blumenau, SC, Brazil
Titolo Testata:
GENETICS AND MOLECULAR BIOLOGY
fascicolo: 3, volume: 22, anno: 1999,
pagine: 321 - 323
SICI:
1415-4757(199909)22:3<321:VJIOAA>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CLIMATE; MITE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Moretto, G Univ Reg Blumenau, Ctr Ciencias Exatas & Nat, BR-89100971 Blumenau, SC, Brazil Univ Reg Blumenau Blumenau SC Brazil BR-89100971 BC SC, Brazil
Citazione:
G. Moretto e L.J. 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

Abstract

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, thoughapparently 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.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 00:02:35