Notas sobre a bionomia de Tetragonisca weyrauchi schwarz, 1943 (Apidae, MeliponinI) Notes on the bionomy of The stingless bee Tetragonisca weyrauchi Schwarz, 1943 (Apidae, Meliponini)
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Abstract
In Brazil, the stingless bee Tetragonisca weyrauchi has its distribution restricted to the Amazonian region. It builts aerial nests frequently in trees branches. The nests are 60 cm wide by 35cm tall. The cover is a fine layer, flexible with different consistences. The majority of the nests present, in the upper part, a prolongation with protuberances and opennings, or only opennings, with millimetrical diameters that vary during the day. This structures are here named "respiráculo". The morphology of the nest, with the opening in the inferior part and the respiráculo in the upper part, seems well adapted to the tropical environment. The internal temperatures of the inhabited nest were compared to those of an empty nest. Both values followed the environment fluctuations with a high correlation (r =0.98). The results suggest that the physical structure of the nest would be responsible for the retention of a small parcel of the caloric energy. If termorregulation exists, it must be more evident above the air temperature of 33ºC due to a tendency of stability of these values. There are several characteristics in nest morphology and behaviour that are similar in Tetragonisca weyrauchi and T. angustula: the large amount of cerume layers around the horizontal combs, the oval food pots around 1-2 cm high and the percentage of water in the honey around 27,6%. The entrance tube with small openings in both species is completly open in the morning when the air temperature is 21-23ºC, and the nectar collection predominantely occurs in Myrtaceae. The bees adapt well in colonies idealized by Nogueira-Neto. They are aggressive when manipulated. Their nests have an estimated population of 2000-3000 bees.
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cortopassilaurino2003notasacta
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| Authors | Cortopassi-Laurino, Marilda;Nogueira-Neto, Paulo; |
| Journal | acta amazonica |
| Year | 2003 |
| DOI |
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| Keywords | Keywords not found |
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