Results 41 to 50 of about 346 (156)
Hummingbird pollination is a hallmark of American plant diversity and has long been thought to evolve in tropical mountains due to declining bee activity. Using sister species of Costus specialized on bees (C. kuntzei) and hummingbirds (C. wilsonii), we show that this shift is not driven by reduced bee visitation with elevation, but by greater ...
Pedro Juárez +7 more
wiley +1 more source
Evolution of Seed Dispersal Modes in the Orchidaceae: Has the Vanilla Mystery Been Solved?
Orchid seeds are predominantly wind-dispersed, often developed within dry, dehiscent fruits that typically release millions of dust-like seeds into the air.
Adam P. Karremans +4 more
doaj +1 more source
Euglossine bees mediate only limited long‐distance gene flow in a tropical vine [PDF]
SummaryEuglossine bees (Apidae: Euglossini) have long been hypothesized to act as long‐distance pollinators of many low‐density tropical plants. We tested this hypothesis by the analysis of gene flow and genetic structure within and among populations of the euglossine bee‐pollinated vineDalechampia scandens.Using microsatellite markers, we assessed ...
Opedal, Øystein H. +6 more
openaire +4 more sources
Human activities have modified the landscape composition. The changes in the landscape structure can be evaluated by metrics, which are influenced, among other factors, by the number of cover classes used for the landscape classification (thematic ...
Lázaro da Silva Carneiro +5 more
doaj +1 more source
Floral Handedness in Mormodes Orchids: Revisiting Charles Darwin's Observations
In this study, we scrutinized floral enantiostyly in Mormodes orchids, a unique trait within Orchidaceae first observed by Charles Darwin. We hypothesize how intricate column twisting drives strategic pollinarium placement onto opposite sides of the thorax of male euglossine bees, enhancing cross‐pollination.
Arthur Domingos‐Melo +2 more
wiley +1 more source
ABSTRACT Aim The distribution of species relying on mutualistic partners for reproduction can be constrained by their partners' distribution. Nonetheless, biotic interactions are often overlooked when estimating the distributions of species (e.g., pollinators of a given plant and the proportion of them with their distribution modelled). In the Tropics,
Amanda Fricensaft Baracat +3 more
wiley +1 more source
During 30 days male euglossine bees were bait-sampled at 12 sites, in the central Pacific coast of Colombia (ten days and four sites at each of three adjacent habitats: farmlands, highly disturbed forest and less disturbed forest) and 487 individuals ...
Juan Carlos Sandino
doaj +2 more sources
A study was conducted in an early second-growth forest aiming at knowing the richness, relative abundance, seasonal distribution, and hourly frequency of euglossine bees, and their association with scent baits.
SILVA F. S., REBÊLO J. M. M.
doaj
Observations on fragrance collection behaviour of euglossine bees (Hymenoptera, Apidae)
AbstractMale bees of the tribe Euglossini collect volatile chemicals secreted by orchids using dense patches of hair on the front tarsi. After collecting chemicals, the bee hovers while transferring these fragrances to invaginations on the hind tibiae. The fragrance collection and hovering behaviours are repeated multiple times.
openaire +5 more sources
More than fruity scents: Pollination biology, scent, and spectral reflectance of Annonaceae species
We characterised the floral visual and olfactory cues of numerous Annonaceae species and reported their pollinators. We further assessed the olfactory space of most Annonaceae species available in the literature. Abstract The family Annonaceae possesses a broad array of floral phenotypes and pollination specializations, and are important in the plant ...
Ming‐Fai Liu +4 more
wiley +1 more source

