Resumen

TELLEZ-FARFAN, Lorena  y  POSADA-FLOREZ, Francisco J.. POLLINATION ACTIVITY AND FLORAL PREFERENCES OF Bombus spp. (HYMENOPTERA: APIDAE) PRESENT IN A HEDGE. rev.udcaactual.divulg.cient. [online]. 2013, vol.16, n.2, pp.359-367. ISSN 0123-4226.

Bombus species are pollinators of agricultural crops and wild flora, contributing to food production and the maintenance of biodiversity. Thus, it is important to perform research aimed to get a better knowledge to preserve them and use them in crop pollination programs. This study was performed at U.D.C.A's campus, located in the northern part of the Sabana of Bogota, Colombia. The objectives of this study were to identify the Bombus species found visiting flowers at the University campus, to register the hours of major activity, and to report how their activity was affected by daily environmental temperature changes. Additionally, the flora visited was identified and the number of visits to the flora was recorded. Two Bombus species were found: B. robustus and B. atratus, the latest being the most abundant at the University campus. Two peaks of activity at temperatures that oscillated between 16°C and 19°C were observed. Eighteen plant species were visited being clover, Trifolium pretense (Fabaceae) the most visited one.

Palabras clave : Bombus atratus; forage activity; host plants; pollination; environmental condition.

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