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A Survey of Tracheal Mite Resistance Levels in U.S. Commercial Queen Breeder Colonies

Danka, R G ; Villa, J D

American bee journal, 2000-05, Vol.140 (5), p.405-408

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  • Título:
    A Survey of Tracheal Mite Resistance Levels in U.S. Commercial Queen Breeder Colonies
  • Autor: Danka, R G ; Villa, J D
  • Assuntos: Apidae ; Apis mellifera
  • É parte de: American bee journal, 2000-05, Vol.140 (5), p.405-408
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: Eight commercial queen producers from five states submitted brood from 6 to 19 breeder colonies each so that emerging bees could be evaluated for relative resistance to tracheal mites. Young, uninfested bees from each colony of an individual queen producer, and also from colonies of two reference stocks (one known to be resistant to tracheal mites and one known to be susceptible), were simultaneously exposed to mites in infested colonies, then retrieved and dissected to determine resulting mite infestations. Results for the breeder colonies were adjusted to the average results of the resistant and susceptible reference colonies with which they were tested. The 83 breeder colonies varied widely in their responses to tracheal mites. About two-thirds were statistically similar to the resistant reference and one-fourth were similar to the susceptible reference. Three queen producers had 30 of 31 breeder colonies that were classified as resistant. The other five queen producers had breeder colonies that were very variable and of which 40% were susceptible. These susceptible colonies were eliminated from the breeding population based on the test results.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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