RELATIVE ABUNDANCE, PHENOLOGY AND FLOWER VISITS OF APID BEES IN EASTERN PARANA, SOUTHERN BRAZIL (HYMENOPTERA, APIDAE)

概要

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The relative abundance, phenology and flower visits of apid bees were studied by periodic sampling throughout the year at two grassland areas of Eastern Parana, Southern Brazil, Sao Jose dos Pinhais (SJP) and Boa Vista in Curitiba (BV). Among 10 species collected, Trigona spinipes (Fabricius) was the dominant at both areas. Bombus bellicosus Smith at SJP and Melipona q. quadrifasciata Lepeletier and Bombus atratus Franklin at BV were also dominants. The difference in faunal makeup between two areas probably in part depends on the difference in vegetation. The phenology of bumblebees resembled basically that of north temperate species, but the active period was much longer. Bumblebees were collected in each month except July, and possible survival of some colonies in winter was not excluded. The phenology of stingless bees was characterized by erratic fluctuation, suggesting their relative independence from seasons and areas surveyed. Honeybees were active throughout the year. The relative numbers of flower visits of all wild bees and Apidae and among some groups of the latter showed some significant differences. Some of these differences were inferred as the expression of the plasticity in foraging behavior rather than innate oligotrophy to particular plant groups.
日本昆虫学会の論文
1971-10-30