Results 121 to 130 of about 346 (156)

Age-dependent perfume development in male orchid bees, Euglossa imperialis.

J Exp Biol
Henske J, Eltz T.
europepmc   +1 more source

Wind energy and insects: reviewing the state of knowledge and identifying potential interactions. [PDF]

PeerJ
Weschler M, Tronstad L.
europepmc   +1 more source

Genetic diversity and conservation in Bromeliaceae based on SSR markers. [PDF]

Genet Mol Biol
Barcellos MF, Costa LMS, Bered F.
europepmc   +1 more source

Differentiating spillover: an examination of cross-habitat movement in ecology spillover in ecology. [PDF]

Proc Biol Sci
Harman RR, Kim TN.
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Microsatellite loci for euglossine bees (Hymenoptera: Apidae)

Molecular Ecology Notes, 2007
AbstractThe Neotropical Euglossini (Hymenoptera: Apidae) are important pollinators of many flowering plants, particularly orchids. Lack of highly polymorphic genetic markers for euglossine species has limited the study of their social organization and inbreeding.
Robert Paxton
exaly   +3 more sources

POPULATION GENETICS, DIPLOID MALES, AND LIMITS TO SOCIAL EVOLUTION OF EUGLOSSINE BEES

Evolution; International Journal of Organic Evolution, 1996
Population 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
exaly   +3 more sources

Diversity and Seasonality of Male Euglossine Bees (Hymenoptera: Apidae) in Central PanamÁ

Ecology, 1983
Seasonal 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.
James Ackerman
exaly   +2 more sources

Population Dynamics of Male Euglossine Bees in Amazonian Forest Fragments

Biotropica, 1987
At 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
exaly   +2 more sources

Thermoregulation and Heat Exchange in Euglossine Bees

Physiological Zoology, 1983
The relations of the temperatures of the thorax ($T_{th}$), head ($T_{h}$), and abdomen ($T_{ab}$) to air temperature ($T_{a}$) are described for male euglossine bees attracted to baits. The large, pubescent bees in the genera Eulaema and Eufriesea regulated $T_{th}$ fairly well, as indicated by the slope of $T_{th}$ on $T_{a}$; $T_{h}$ was distinctly ...
Michael L. May, Timothy M. Casey
openaire   +1 more source

Diploid Male Frequencies in Colombian Populations of Euglossine Bees

Biotropica, 2007
ABSTRACTSome studies have recently reported high diploid male frequencies in euglossine bees indicating possible population declines. We estimated the genetic variability and frequency of males that are diploid in five Colombian species of euglossine bees using allozyme markers. Expected heterozygosities ranged from 0.10 to 0.23.
Margarita M. López‐Uribe, Maria T. Almanza, Marina Ordoñez   +2 more
openaire   +1 more source