CICYTTP   12500
CENTRO DE INVESTIGACION CIENTIFICA Y DE TRANSFERENCIA TECNOLOGICA A LA PRODUCCION
Unidad Ejecutora - UE
artículos
Título:
Native and ornamental exotic resources in pollen loads and garbage pellets of four stingless bees (Apidae, Meliponini) in an urban environment with riparian native forest
Autor/es:
VOSSLER F. G.
Revista:
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS.
Editorial:
ACAD BRASILEIRA DE CIENCIAS
Referencias:
Lugar: Rio de Janeiro; Año: 2019 vol. 91 p. 1 - 13
ISSN:
0001-3765
Resumen:
An entomopalynological study to assess pollen use by wild bees was performed in an urbanenvironment with riparian native forest in the Chaco region of Argentina. A combined method for samplingpollen loads and garbage pellets at nest entrances in four stingless bees with different entrance size andforager traffic was here successfully used. Sampling was carried out in a short period of time (late winter)and located within a distance of 50 m. Pollen analysis using acetolysis showed that most identified pollentypes (31) were from native species, 12 from ornamental exotic species, 5 included native and ornamentalexotic species and 18 of uncertain status. A much broader pollen spectrum was present in garbage pellets(62 types) than loads (14 types). A few resources from previous blooming (late spring-summer) wereidentified in garbage pellets, which were mainly composed of current flowerings. From the 66 pollentypes found in all samples, many (18) remained unidentified due to the complex nature of the vegetationsurrounding the nests and the generalist behaviour of these bees. The versatile foraging behaviour onspontaneous (mostly native) and cultivated (mostly ornamental exotic) pollen resources is an importantissue for the conservation and rearing of stingless bee colonies in urban habitats where native flora ispreserved, particularly the riparians, where a high richness of blooming plants is available.