Results 181 to 190 of about 1,518 (216)
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Population Dynamics of Male Euglossine Bees in Amazonian Forest Fragments
Biotropica, 1987At sites near Manaus, Amazonas, Brazil we measured the impact of forest fragmentation on populations of male euglossine bees. The visitation rates of 15 species of male euglossine bees to three chemical attractants were determined for continuous forest; isolated 1, 10, and 100 ha forest fragments; and a cleared area.
A. Harriett Powell, George V. N. Powell
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POPULATION GENETICS, DIPLOID MALES, AND LIMITS TO SOCIAL EVOLUTION OF EUGLOSSINE BEES
Evolution, 1996Population genetics using allozyme electrophoresis of four euglossine bee genera in Panama revealed high proportions of diploid males among social species but no genetic polymorphism in seasonal and parasitic species, thus, no possibility for discrimination of diploid males.
D W, Roubik, L A, Weigt, M A, Bonilla
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Motor patterns of male euglossine bees evoked by floral fragrances
Animal Behaviour, 1971Abstract During pollination of certain orchids, tropical euglossine bees collect fragrant chemical substances from the flower with forelegs, transfer it to the midlegs, and finally to a cavity in the hindleg tibia, as indicated by motion picture analysis. The activities of Eulaema cingulata, E.
William H. Evoy, Brooks P. Jones
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Flight Distances of Male Euglossine Bees in Orchid Pollination
Biotropica, 1975Male Euglossa imperiialis (Apidae, Euglossini) were marked after capture at cineole, a compound in orchid floral fragrances. Recaptures revealed that a large number of males may be available for pollination of a given orchid and that individual bees may remain at one locality throughout a morning and may be recapturable at that site over a period of ...
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Journal of Chemical Ecology, 1989
MaleEulaema cingulata (Fabricius) (Apidae: Euglossini) possess large cephalic labial glands that secrete a mixture of lipids. In the process of fragrance collection, males secrete the labial gland lipids onto the substrate. The mixture of lipids and fragrances is then taken up by the front tarsal brushes and transferred to the hind tibial organs.
W M, Whitten, A M, Young, N H, Williams
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MaleEulaema cingulata (Fabricius) (Apidae: Euglossini) possess large cephalic labial glands that secrete a mixture of lipids. In the process of fragrance collection, males secrete the labial gland lipids onto the substrate. The mixture of lipids and fragrances is then taken up by the front tarsal brushes and transferred to the hind tibial organs.
W M, Whitten, A M, Young, N H, Williams
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Baited McPhail Fruitfly Traps to Collect Euglossine Bees
1972(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Dispersal of euglossine bees between fragments of the Brazilian Atlantic Forest
Journal of Tropical Ecology, 2003The Brazilian Atlantic Forest is one of the world's ‘hot spots’ for conservation because of its high level of endemism and number of endangered species (Myers et al. 2000). After centuries of deforestation, most of the remaining Atlantic Forest is scattered as small fragments on private land (Fonseca 1985, Jorge & Garcia 1997). Pollination could be
Athayde Tonhasca Jr. +2 more
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Specificity and mutual dependency of the orchid-euglossine bee interaction
Biological Journal of the Linnean Society, 1983Seasonal and geographic relationships, and host pollinator specificities are examined for indications of interdependency in the orchid-euglossine bee interaction. The orchids are dependent on the bees for pollination, and their flowering seasonality corresponds well with peak activity of their pollinators.
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Diversity and Seasonality of Male Euglossine Bees (Hymenoptera: Apidae) in Central PanamÁ
Ecology, 1983Seasonal changes in species richness, composition, and abundance of male euglossine bees were determined by weekly censusing of individuals attracted to 16 chemical baits. Bee populations were monitored for >1 yr in the lowland tropical moist forest of seasonally dry Barro Colorado Island (BCI), Panama.
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The effects of forest fragmentation on euglossine bee communities (Hymenoptera: Apidae: Euglossini)
Biological Conservation, 2009Abstract Despite scientific and media attention on pollinator declines, there is still only a rudimentary understanding of the response of bees—the most important group of pollinators worldwide—to ongoing land use changes. Euglossine bees are an ecologically important Neotropical clade of forest-dependent pollinators.
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