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Science 15 January 1971:
Vol. 171. no. 3967, pp. 203 - 205
DOI: 10.1126/science.171.3967.203
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Articles

Euglossine Bees as Long-Distance Pollinators of Tropical Plants

D. H. Janzen 1

1 Department of Biology, University of Chicago, Chicago, Illinois 60637

Euglossine bees may return to a nest from as far away as 23 kilometers in a tropical rain forest. These bees apparently forage long distances and visit the same plants repeatedly along a feeding route. They probably promote outcrossing among tropical plants with low population density; therefore, they may permit the existence of plant species whose densities have been forced very low by such things as competition and predators on seeds and seedlings.


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