Results 1 to 10 of about 1,431 (167)

Cuticular Hydrocarbons of Orchid Bees Males: Interspecific and Chemotaxonomy Variation [PDF]

open access: yesPLoS ONE, 2015
Recent studies have investigated the composition of compounds that cover the cuticle in social insects, but few studies have focused on solitary bees.
Fabio SANTOS DO Nascimento
exaly   +6 more sources

Frequency and behavior of Melipona stingless bees and orchid bees (Hymenoptera: Apidae) in relation to floral characteristics of vanilla in the Yucatán region of Mexico [PDF]

open access: yesPLoS ONE
Vanilla planifolia is native to the Mexican tropics. Despite its worldwide economic importance as a source of vanilla for flavoring and other uses, almost all vanilla is produced by expensive hand-pollination, and minimal documentation exists for its ...
David Macfarlane   +1 more
exaly   +3 more sources

Using Ecological Niche Models and Niche Analyses to Understand Speciation Patterns: The Case of Sister Neotropical Orchid Bees [PDF]

open access: yesPLoS ONE, 2014
The role of past connections between the two major South American forested biomes on current species distribution has been recognized a long time ago. Climatic oscillations that further separated these biomes have promoted parapatric speciation, in which
Daniel De Paiva Silva   +2 more
exaly   +3 more sources

The evolution of sexual signaling is linked to odorant receptor tuning in perfume-collecting orchid bees [PDF]

open access: yesNature Communications, 2020
Male orchid bees collect scents from the environment to attract females for mating. Here, Brand et al. combine population genomic, perfume chemistry, and functional analyses to show how divergence in odorant receptor genes may be driving reproductive ...
Philipp Brand   +6 more
doaj   +2 more sources

Conservation value and permeability of neotropical oil palm landscapes for orchid bees. [PDF]

open access: yesPLoS ONE, 2013
The proliferation of oil palm plantations has led to dramatic changes in tropical landscapes across the globe. However, relatively little is known about the effects of oil palm expansion on biodiversity, especially in key ecosystem-service providing ...
George Livingston   +3 more
doaj   +2 more sources

Macroevolution of perfume signalling in orchid bees

open access: yesEcology Letters, 2016
AbstractTheory predicts that both stabilising selection and diversifying selection jointly contribute to the evolution of sexual signalling traits by (1) maintaining the integrity of communication signals within species and (2) promoting the diversification of traits among lineages.
Marjorie Weber   +2 more
exaly   +3 more sources

Evolution of Acquired Perfumes and Endogenous Lipid Secretions in Orchid Bees. [PDF]

open access: yesJ Chem Ecol
AbstractMale orchid bees are unique in the animal kingdom for making perfumes that function as sex pheromone. Males collect volatile chemicals from the environment in the neotropical forests, including floral and non-floral sources, creating complex but species-specific blends.
Eltz T, Mende T, Ramírez SR.
europepmc   +4 more sources

Suction feeding in orchid bees (Apidae: Euglossini) [PDF]

open access: yesProceedings of the Royal Society B: Biological Sciences, 2004
Energy flux during nectar feeding is maximized at an intermediate sugar concentration, the value of which depends on the morphology of the feeding apparatus and the modality of fluid feeding. Biomechanical models predict that a shift from capillary-based lapping to suction feeding will lead to a decrease in this optimal sugar concentration.
exaly   +4 more sources

Raising the sugar content--orchid bees overcome the constraints of suction feeding through manipulation of nectar and pollen provisions. [PDF]

open access: yesPLoS ONE, 2014
Unlike most other bees, the long-tongued orchid bees ingest nectar using suction feeding. Although long tongues allow exploitation of flowers with deep spurs, the energy intake rate is optimal at 10-20% lower nectar sugar concentrations compared to that ...
Tamara Pokorny, Klaus Lunau, Thomas Eltz
doaj   +2 more sources

Large-Range Movements of Neotropical Orchid Bees Observed via Radio Telemetry

open access: yesPLoS ONE, 2010
Neotropical orchid bees (Euglossini) are often cited as classic examples of trapline-foragers with potentially extensive foraging ranges. If long-distance movements are habitual, rare plants in widely scattered locations may benefit from euglossine ...
Jerry Moxley   +2 more
exaly   +3 more sources

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