Results 121 to 130 of about 345 (159)

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.
europepmc   +1 more source

Fine-tuned terpene synthase gene expression, functional promiscuity, and subcellular localization: implications for the evolution of complex floral volatile bouquet in Caladenia orchids. [PDF]

Plant Cell Physiol
Zhou F, Zhao YN, Perkins J, Xu H, Pichersky E, Peakall R, Wong DCJ.   +6 more
europepmc   +1 more source

Persistent Habitat Instability and Patchiness, Sexual Attraction, Founder Events, Drift and Selection: A Recipe for Rapid Diversification of Orchids. [PDF]

Plants (Basel)
Ackerman JD, Tremblay RL, Arias T, Zotz G, Sharma J, Salazar GA, Kaur J.   +6 more
europepmc   +1 more source

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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 J Paxton
exaly   +3 more sources

Euglossine Bees as Long-Distance Pollinators of Tropical Plants

Science, 1971
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 ...
D H Janzen
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
exaly   +3 more sources

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
exaly   +2 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 D Ackerman
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