Results 41 to 50 of about 333,670 (247)
Nectar and oleiferous trichomes as floral attractants in Bulbophyllum saltatorium Lindl. (Orchidaceae) [PDF]
, 2017 Although many Orchidaceae have deceit flowers that produce no reward, the most common reward, when present, is nectar. Bulbophyllum, however, is unusual in that the labellar secretions of most species investigated to date lack sugars, and, therefore ...
Davies, Kevin L. +2 more
core +1 more source
bioRxiv, 2022 Traits that mediate reproductive isolation between species, such as those involved in mate choice and/or recognition, are predicted to experience stabilizing selection towards the species mean.
Kathy Darragh +2 more
semanticscholar +1 more source
Sociobiology, 2017 To investigate species composition, diversity, richness, and monthly abundance of orchid bees in different types of dense rainforest, placed in different altitudes, the orchid bees were collected for 11 months in three vegetation types: dense montane ...
Willian Moura Aguiar +3 more
doaj +1 more source
Suction feeding in orchid bees (Apidae: Euglossini) [PDF]
Proceedings of the Royal Society of London. Series 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.
openaire +3 more sources
Climate Change: Bees and Orchids Lose Touch [PDF]
Current Biology, 2014 Spring temperature increases could differentially affect flowering times and pollinator flight periods, leading to asynchrony and reduced pollination. A specialist orchid-bee study combining herbarium, museum and field data shows that bee flight dates are advancing faster than orchid flowering, which could lead to significant future uncoupling.
openaire +2 more sources
Macroevolution of perfume signalling in orchid bees
Ecology 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 G, Weber +3 more
openaire +2 more sources
Padrões espaciais na distribuição de abelhas Euglossina (Hymenoptera, Apidae) da região Neotropical [PDF]
, 2010 Abelhas das orquídeas (Apini, Euglossina) apresentam distribuição principalmente Neotropical, com cerca de 200 espécies e cinco gêneros descritos. Muitos levantamentos locais de fauna estão disponíveis na literatura, mas estudos comparativos sobre a ...
FARIA, Luiz R.R. +2 more
core +3 more sources
Olfactory specialization for perfume collection in male orchid bees [PDF]
Journal of Experimental Biology, 2016 ABSTRACT Insects rely on the olfactory system to detect a vast diversity of airborne molecules in their environment. Highly sensitive olfactory tuning is expected to evolve when detection of a particular chemical with great precision is required in the context of foraging and/or finding mates.
Mitko, Lukasz +5 more
openaire +4 more sources
Presence of Euglossa (Euglossa) amazonica outside of the Amazon Basin – biogeographic insights [PDF]
, 2013 Distributional patterns of euglossine bees are often shadowed by the most noticeablefeatures of the group, their morphology and behavior. With the constant discovery of records ofeuglossine species in novel localities, and the ongoing systematic work in ...
Hinojosa-Diaz, Ismael A.
core +3 more sources
Sociobiology, 2016 The lack of effective biodiversity baselines is a major impairment to implement conservation plans. Hence, constructing and updating species lists provides vital information about species distribution records.
Ricardo Ribeiro de Castro Solar +3 more
doaj +1 more source