Results 31 to 40 of about 1,457 (180)
Química Nova, 2013 We investigated the phenolic constituents and antioxidant activity of geopropolis from two species of stingless Amazonian bees, Melipona interrupta and Melipona seminigra.
Ellen Cristina Costa da Silva +4 more
doaj +1 more source
Estrutura multidimensional dos Meliponídeos () [PDF]
Acta Amazonica, 1977 Resumo Estudou-se 12 variáveis de 21 espécies de Meliponídeos. Como medida de semelhança morfológica estimou-se a distância generalizada de Mahalanobis. Quatro figuras representam as distâncias estimadas.
José Furtado Pisani +2 more
doaj +1 more source
Acta Scientiarum: Animal Sciences, 2022 This study aimed to observe the attractiveness efficiency of trap boxes installed in collective shelters of stingless bee colonies (Melipona flavolineata, Melipona fasciculata and Scaptotrigona aff.
Mikail Olinda de Oliveira +3 more
doaj +1 more source
Flight activity of Melipona asilvai Moure (Hymenoptera: Apidae) [PDF]
Brazilian Journal of Biology, 2006 Many stingless bee species are specific to their areas of occurrence. Even when adapted to their local climate and flora conditions, they are subject to modifications in the environment, directly influencing flight activity. The aim of this work is to obtain information about the flight activity of the stingless bee Melipona asilvai Moure, thus ...
Souza, B. A. +2 more
openaire +5 more sources
Dataset about Southern-Brazilian geopropolis: Physical and chemical perspectives
Data in Brief, 2020 The dataset showed in this manuscript belongs to the investigation of the Southern-Brazilian geopropolis of stingless bees. Stingless bees are native species of insects from tropical areas; they produce honey, pollen and geopropolis that is composed of a
Bruno Luís Ferreira +6 more
doaj +1 more source
Concentrated vulnerabilities in bees: Diet specialists have smaller geographic ranges
Insect Conservation and Diversity, EarlyView.Niche breadth theory predicts a positive association between range size and diet breadth, which could concentrate risk among specialists, but this is not well established for bees. Using global occurrence data (range size) and natural history collection‐derived pollen data (diet breadth), we compared these traits in 633 species from six families and ...
Charles N. Thrift +4 more
wiley +1 more source
The Wonders of Vanilla: Celebrating the 150th Anniversary of Synthetic Vanillin
ChemFoodChem, Volume 2, Issue 2, June 2026.The year 2024 marked the 150th anniversary of the first commercial production of vanillin, one of the world's most cherished flavor ingredients. This review traces vanilla's history from Mesoamerica to modern production methods, examines its composition, the discovery of vanillin and Haarmann's early synthesis compared to modern methods, and highlights
Elisabetta Brenna +2 more
wiley +1 more source
Antiproliferative Constituents of Geopropolis from the Bee Melipona scutellaris [PDF]
Planta Medica, 2015 Fractionation of geopropolis from Melipona scutellaris, guided by antiproliferative activity against two colon cancer cell lines (COLO205 and KM12), led to the isolation of two new cinnamic acid esters, mammea-type coumarins 5,7-dihydroxy-6-(3-methyl-2-butenyl)-8-(4-cinnamoyl-3-methyl-1-oxobutyl)-4-propyl-coumarin (1) and 5,7-dihydroxy-6-(4-cinnamoyl-3-
Marcos Guilherme, da Cunha +6 more
openaire +2 more sources
Sociobiology, 2014 The vegetation of the Cerrado, also known as the Brazilian savanna, is rapidly being replaced by agricultural and urban areas. The scope of this study was to evaluate the relationship between the reduction in savanna vegetation and the occurrence of ...
Fabiana Curtopassi Pioker-Hara +2 more
doaj +1 more source
Ecology and Evolution, Volume 16, Issue 6, June 2026.The current study used machine learning and geospatial analysis to predict how climate change will loosen and fragment suitable habitats for Ethiopian honeybees. Main factors like agro‐ecological zones and dry‐season precipitation were found to be critical for bee survival.
Diriba Tulu +4 more
wiley +1 more source