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The present study discusses spatial variations in the community structure of stingless bees as well as associated ecological factors by comparing the nest densities in two stages of forest regeneration in a Brazilian Tropical Atlantic rainforest. The stingless bee nests were sampled in sixty-four 25 × 25 m plots (4 ha) in four replicates of two forest(More)
As most stingless bee species depend on preexisting cavities, principally tree hollows, nesting site availability may represent an important restriction in the structuring of their forest communities. The present study examined the spatial dynamics of stingless bee communities in an area of Atlantic Forest by evaluating their swarming to trap-nests. The(More)
The spatial distribution of orchid bees was analyzed in a mosaic of tropical rainforest and rubber tree groves in the Atlantic coast of Brazil (ARRF), comparing abundances and species compositions between replicas of the following landscape elements: small and large forest fragments, and rubber tree groves. Species compositions responded to all of the(More)
We evaluate the permeability of three matrices of arboreal crops for the Euglossina bees that inhabit the Brazilian Atlantic rainforest hotspot. The comparisons of occurrences and abundances within three mosaics of forest and extensive arboreal crops (piassava palm, oil palm, and rubber tree) showed that all the matrices were permeable to most orchid bees.(More)
To the Editor: Leishmania infantum is endemic to northeastern Brazil. It is responsible for visceral leishmani-asis (VL), a major emerging health problem in urban areas. Transmission occurs predominantly by the Lutzomyia lon-gipalpis sand fly, but transfusion-associated VL, caused by L. infantum, has been reported from southern Europe and, by L. donovani,(More)
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