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Yeast communities associated with stingless bees.

Carlos A Rosa1, Marc André Lachance, Janaína O C Silva

  • 1Departamento de Microbiologia, ICB, C.P. 486, Universidade Federal de Minas Gerais, -MG 31270-901, Belo Horizonte, Brazil. carlrosa@icb.ufmg.br

FEMS Yeast Research
|December 5, 2003
PubMed
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This study investigated yeast communities in stingless bees, finding specific yeast species like Starmerella meliponinorum associated with Tetragonisca angustula and Frieseomelitta varia. These yeasts may have a mutualistic relationship with the bees.

Area of Science:

  • * Mycology and entomology, focusing on the symbiotic relationships between insects and microorganisms.
  • * Investigating microbial ecology within Hymenoptera, specifically stingless bees.

Background:

  • * Bees harbor diverse microbial communities, including yeasts, which play crucial roles in their health and ecology.
  • * Previous research suggests yeast-bee interactions can be specialized, with certain yeast species found predominantly in specific bee hosts.

Purpose of the Study:

  • * To characterize the yeast communities associated with three stingless bee species: Tetragonisca angustula, Melipona quadrifasciata, and Frieseomelitta varia.
  • * To identify key yeast species and explore potential symbiotic relationships with their bee hosts.

Main Methods:

  • * Isolation and identification of yeasts from adult bees of the studied stingless bee species.

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  • * Phylogenetic analysis to determine the relationships of the isolated yeasts.

    • Main Results:

    • * Tetragonisca angustula and Frieseomelitta varia exhibited a strong association with the yeast Starmerella meliponinorum.
    • * Melipona quadrifasciata predominantly carried a yeast species related to Candida apicola, with lower occurrences of S. meliponinorum.
    • * Isolated yeasts included species commonly found on flowers and in the phylloplane environment.

    Conclusions:

    • * Starmerella meliponinorum and the Candida apicola complex yeasts likely engage in a mutualistic relationship with the studied stingless bees.
    • * The presence of floral and phylloplane yeasts suggests bees act as vectors for various yeast species, potentially benefiting both the bees and the yeasts through nutrient exchange or protection.