Vitellogenin expression in queen ovaries and in larvae of both sexes of Apis mellifera

Authors

  • Karina R. Guidugli,

    1. Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brasil
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  • Maria-Dolors Piulachs,

    Corresponding author
    1. Department of Physiology and Molecular Biodiversity, Institut de Biologia Molecular de Barcelona (CSIC), Barcelona, Spain
    • Departament of Physiology and Molecular Biodiversity, Institut de Biologia Molecular de Barcelona (CSIC), Jordi Girona 18, 08034 Barcelona, Spain
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  • Xavier BelléS,

    1. Department of Physiology and Molecular Biodiversity, Institut de Biologia Molecular de Barcelona (CSIC), Barcelona, Spain
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  • Anete P. LourençO,

    1. Departamento de Genética, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brasil
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  • Zilá L.P. Simões

    Corresponding author
    1. Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto-SP, Brasil
    • Departament of Physiology and Molecular Biodiversity, Institut de Biologia Molecular de Barcelona (CSIC), Jordi Girona 18, 08034 Barcelona, Spain
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Abstract

In the honeybee, Apis mellifera, vitellogenin (Vg) expression has been detected in the ovary of queens, but not in that of workers. In addition, larvae of both sexes produce Vg in significant amounts, which suggest that Vg serves for functions additional to oocyte growth and energy supply to the embryo. In vivo hormone treatment experiments suggest that the decrease of 20-hydroxyecdysone concentration occurring in previtellogenic phases allows Vg production. Southern analysis indicates that the Vg gene is present as a single copy in the honeybee genome. Arch. Insect Biochem. Physiol. 59:211–218, 2005. © 2005 Wiley-Liss, Inc.

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