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Artículos Científicos

URI permanente para esta colecciónhttp://10.0.96.45:4000/handle/11056/17242

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Examinando Artículos Científicos por Materia "ABEJAS REINA"

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    A scientific note on virgin queen acceptance in stingless bees: evidence for the importance of queen aggression
    (Springer Nature, 2010-01) Jarau, Stefan; Van Veen, Johan; Aguilar, Ingrid; Ayasse, Manfred
    Stingless bees (Apidae, Meliponini), which are close relatives to honey bees (Apidae, Apini) and share with them a highly eusocial colonial organization (Michener, 2000), are remarkable for their habit of producing virgin queens throughout the year (Engels and Imperatriz-Fonseca, 1990). Most of these queens are not needed for a colony’s survival or division, however, and get executed some time after their emergence (Imperatriz-Fonseca and Zucchi, 1995).
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    Virgin queen execution in the stingless bee Melipona beecheii: the sign stimulus for worker attacks
    (INRA/DIB-AGIB/EDP Sciences, 2009-01-21) Jarau, Stefan; Van Veen, Johan W.; Aguilar, Ingrid; Ayasse, Manfred
    Stingless bees produce considerable numbers of virgin queens over the year, most of which are superfluous and get executed by the workers. Nothing is known yet about the sign stimulus that releases the worker attacks. In the present study we investigated the queen execution process in Melipona beecheii and found in both behavioral observations and experiments with caged living virgin queens that workers are not attracted to them from a distance by means of volatile chemicals. Furthermore, worker aggression, which is obvious towards virgin queens that run through the nest excitedly with their abdomen enlarged and the wings beating, was lowered to almost zero when we made the queens “behavior-less” by experimentally killing them. Our results clearly show that the sign stimulus for releasing the execution behavior in Melipona beecheii workers is not a chemical stimulus but the virgin queens’ conspicuous behavior, which, we hypothesize, could act as a direct measure of their fitness.