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  • 1995-1999  (2)
  • 1998  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A case of multiple mating in stingless bees (Meliponinae) (1998)
    Springer
    Insectes sociaux 45 (1998), S. 231-233 
    Details
    ISSN: 1420-9098
    Keywords: Key words: Multiple mating, stingless bees, Tetragonisca angustula, Meliponinae.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary: In several stingless bee species many males aggregate in the vicinity of a nest when a virgin queen is present in the colony and is preparing for the nuptial flight. We report such male assemblage for Tetragonisca angustula. The departure of a virgin queen from the colony and the subsequent mating could be video-recorded, because the queen and the males that had mounted her fell to the ground. Since at least two males had lost their genitalia, multiple mating seems to have occurred. This is in contrast with the prevailing view found in literature concerning the mating biology of stingless bees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000400050083
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Status and Results from the HEGRA Air Shower Experiment (1998)
    Springer
    Astrophysics and space science 263 (1998), S. 377-380 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The HEGRA experiment investigates the relativistic (non thermal) universe by measuring air showers initiated in the atmosphere by photons and charged particles from the cosmos, using the imaging atmospheric Cherenkov light technique (〉 500 GeV) and the showerfront sampling technique (〉 20 TeV). New results concerning the search and study of gamma ray sources above 500 GeV, the measurement of the energy spectrum and chemical composition of cosmic rays above 1 PeV and the search of TeV counterparts of Gamma Ray Bursts are briefly described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002101216613
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    Paper (German National Licenses)
    Fulltext
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