keyword
MENU ▼
Read by QxMD icon Read
search

bee pollen

keyword
https://www.readbyqxmd.com/read/28205632/using-dna-metabarcoding-to-investigate-honey-bee-foraging-reveals-limited-flower-use-despite-high-floral-availability
#1
Natasha de Vere, Laura E Jones, Tegan Gilmore, Jake Moscrop, Abigail Lowe, Dan Smith, Matthew J Hegarty, Simon Creer, Col R Ford
Understanding which flowers honey bees (Apis mellifera) use for forage can help us to provide suitable plants for healthy honey bee colonies. Accordingly, honey DNA metabarcoding provides a valuable tool for investigating pollen and nectar collection. We investigated early season (April and May) floral choice by honey bees provided with a very high diversity of flowering plants within the National Botanic Garden of Wales. There was a close correspondence between the phenology of flowering and the detection of plants within the honey...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204486/migratory-bee-hive-transportation-contributes-insignificantly-to-transgenic-pollen-movement-between-spatially-isolated-alfalfa-seed-fields
#2
Natalie K Boyle, Sandya R Kesoju, Stephanie L Greene, Ruth C Martin, Douglas B Walsh
No abstract text is available yet for this article.
February 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28193870/disruption-of-quercetin-metabolism-by-fungicide-affects-energy-production-in-honey-bees-apis-mellifera
#3
Wenfu Mao, Mary A Schuler, May R Berenbaum
Cytochrome P450 monooxygenases (P450) in the honey bee, Apis mellifera, detoxify phytochemicals in honey and pollen. The flavonol quercetin is found ubiquitously and abundantly in pollen and frequently at lower concentrations in honey. Worker jelly consumed during the first 3 d of larval development typically contains flavonols at very low levels, however. RNA-Seq analysis of gene expression in neonates reared for three days on diets with and without quercetin revealed that, in addition to up-regulating multiple detoxifying P450 genes, quercetin is a negative transcriptional regulator of mitochondrion-related nuclear genes and genes encoding subunits of complexes I, III, IV, and V in the oxidative phosphorylation pathway...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28187589/palaearctic-i-protosmia-i-bees-of-the-subgenus-i-chelostomopsis%C3%A2-i-megachilidae-osmiini-biology-taxonomy-and-key-to-species
#4
Andreas Müller
Chelostomopsis represents a subgenus of the osmiine bee genus Protosmia (Megachilidae) containing three Palaearctic and one Nearctic species. Analysis of female pollen loads and literature data indicate that all Chelostomopsis species are broad pollen generalists exploiting the flowers of numerous plant families, such as Fabaceae, Asteraceae, Lamiaceae, Cistaceae and Brassicaceae. Preexisting linear cavities in dead wood or pine cones serve as nesting sites and pure resin is used to construct cell partitions and nest plug...
February 2, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187378/development-of-an-analytical-method-for-detecting-nitrofurans-in-bee-pollen-by-liquid-chromatography-electrospray-ionization-tandem-mass-spectrometry
#5
Mi Sun Park, Kyung Tae Kim, Jong Seong Kang
Bee pollen collected by honeybees, which is in powdered form, is a good nutritional supplement. Nitrofuran antibiotics are assumed not to be present in bee pollen, which is important as the level of antibiotics in bee pollen is strongly regulated in many countries. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to detect nitrofurans in honey has been developed, but this method is not suitable for bee pollen because of it being in powdered form. During preparation of bee pollen samples, the dispersal of powder particles in an aqueous solution often makes them susceptible to forming an emulsion with solvent components such as hexane and ethyl acetate...
January 9, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28183868/separation-of-different-pollen-types-by-chemotactile-sensing-in-bombus-terrestris
#6
Fabian A Ruedenauer, Sara D Leonhardt, Fabian Schmalz, Wolfgang Rössler, Martin F Strube-Bloss
When tasting food, animals rely on chemical and tactile cues, which determine the animal's decision on whether or not to eat food. As food nutritional composition has enormous consequences for the survival of animals, food items should generally be tasted before they are eaten or collected for later consumption. Even though recent studies confirmed the importance of e.g. gustatory cues, compared to olfaction only little is known about the representation of chemotactile stimuli at the receptor level (let alone higher brain centers) in animals other than vertebrates...
February 9, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28181584/patterns-of-pollen-and-nectar-foraging-specialization-by-bumblebees-over-multiple-timescales-using-rfid
#7
Avery L Russell, Sarah J Morrison, Eleni H Moschonas, Daniel R Papaj
The ecological success of social insects is frequently ascribed to improvements in task performance due to division of labour amongst workers. While much research has focused on improvements associated with lifetime task specialization, members of colonies can specialize on a given task over shorter time periods. Eusocial bees in particular must collect pollen and nectar rewards to survive, but most workers appear to mix collection of both rewards over their lifetimes. We asked whether bumblebees specialize over timescales shorter than their lifetime...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28178217/flavonoid-composition-and-antitumor-activity-of-bee-bread-collected-in-northeast-portugal
#8
Filipa Sobral, Ricardo C Calhelha, Lillian Barros, Montserrat Dueñas, Andreia Tomás, Celestino Santos-Buelga, Miguel Vilas-Boas, Isabel C F R Ferreira
Bee bread (BB) is a fermented mixture of plant pollen, honey, and bee saliva that worker bees use as food for larvae, and for young bees to produce royal jelly. In the present study, five BB samples, collected from Apis mellifera iberiensis hives located in different apiaries near Bragança, in the northeast region of Portugal, and one BB commercial sample were characterized by high-performance liquid chromatography coupled to a diode array detector and electrospray mass spectrometry (HPLC-DAD-ESI/MS) in terms of phenolic compounds, such as flavonoid glycoside derivatives...
February 7, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28161469/proteomic-and-metabolomic-analysis-reveals-rapid-and-extensive-nicotine-detoxification-ability-in-honey-bee-larvae
#9
Esther E du Rand, Hannelie Human, Salome Smit, Mervyn Beukes, Zeno Apostolides, Susan W Nicolson, Christian W W Pirk
Despite potential links between pesticides and bee declines, toxicology information on honey bee larvae (Apis mellifera) is scarce and detoxification mechanisms in this development stage are virtually unknown. Larvae are exposed to natural and synthetic toxins present in pollen and nectar through consumption of brood food. Due to the characteristic intensive brood care displayed by honey bees, which includes progressive feeding throughout larval development, it is generally assumed that larvae rely on adults to detoxify for them and exhibit a diminished detoxification ability...
February 1, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28148820/correction-bumble-bees-regulate-their-intake-of-essential-protein-and-lipid-pollen-macronutrients
#10
A D Vaudo, D Stabler, H M Patch, J F Tooker, C M Grozinger, G A Wright
No abstract text is available yet for this article.
February 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28145619/reproductive-biology-and-pollination-ecology-of-triplaris-gardneriana-polygonaceae-a-case-of-ambophily-in-the-brazilian-chaco
#11
T Custodio, P Comtois, A C Araujo
Triplaris gardneriana (Polygonaceae) is a dioecious pioneer tree reported as insect pollinated, despite possessing traits related to anemophily. Here, we analyze the possible roles of insects and wind on the pollination of this species to establish whether the species is ambophilous. We carried out observations of floral biology, as well as on the frequency and behaviour of pollinators visiting flowers in a population of T. gardneriana in the Chaco vegetation of Brazil. We conducted experimental pollinations to determine the maternal fertility of female plants and whether they were pollen limited and aerobiological experiments to provide evidence of how environmental factors influence atmospheric pollen dispersal...
February 1, 2017: Plant Biology
https://www.readbyqxmd.com/read/28135666/the-combined-effects-of-a-monotonous-diet-and-exposure-to-thiamethoxam-on-the-performance-of-bumblebee-micro-colonies
#12
C Dance, C Botías, D Goulson
There is a pressing need to better understand the factors contributing to declines of wild pollinators such as bumblebees. Many different contributors have been postulated including: loss of flower-rich habitats and nesting sites; monotonous diets; impacts of invasive pathogens; exposure to pesticides such as neonicotinoids. Past research has tended to investigate the impacts of these stressors in isolation, despite the increasing recognition that bees are simultaneously exposed to a combination of stressors, with potentially additive or synergistic effects...
January 27, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28123097/a-l%C3%A3-vy-flight-diffusion-model-to-predict-transgenic-pollen-dispersal
#13
Valentin Vallaeys, Rebecca C Tyson, W David Lane, Eric Deleersnijder, Emmanuel Hanert
The containment of genetically modified (GM) pollen is an issue of significant concern for many countries. For crops that are bee-pollinated, model predictions of outcrossing rates depend on the movement hypothesis used for the pollinators. Previous work studying pollen spread by honeybees, the most important pollinator worldwide, was based on the assumption that honeybee movement can be well approximated by Brownian motion. A number of recent studies, however, suggest that pollinating insects such as bees perform Lévy flights in their search for food...
January 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28094000/molecular-tracing-of-the-origin-of-six-different-plant-species-in-bee-honey-using-real-time-pcr
#14
Yajun Wu, Yange Yang, Mingchang Liu, Bin Wang, Meige Li, Ying Chen
The quality of honey is significantly influencedby floral origin. Mislabeling floral species occursfrequently in beehoney products. To protectconsumers from economic fraud and maintain afair market environment, methods to identify floralspecies in honey are necessary. In our study, realtimePCRs were established, targeting six honeytypes mainly produced in China (canola, Chinesemilkvetch, Chinese chaste tree, locust tree, litchi,and longan). Sensitivity testing on DNA from planttissues exhibited LODs of about 0...
January 16, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28079366/the-neonicotinoid-insecticide-thiacloprid-impacts-upon-bumblebee-colony-development-under-field-conditions
#15
Ciaran Ellis, Kirsty J Park, Penelope Whitehorn, Arthur David, Dave Goulson
The impacts of pesticides, and in particular of neonicotinoids, on bee health remain much debated. Many studies describing negative effects have been criticized as the experimental protocol did not perfectly simulate real-life field scenarios. Here, we placed free-flying bumblebee colonies next to raspberry crops that were either untreated or treated with the neonicotinoid thiacloprid as part of normal farming practice. Colonies were exposed to the raspberry crops for a two week period before being relocated to either a flower-rich or flower-poor site...
January 26, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28073057/neonicotinoids-transference-from-the-field-to-the-hive-by-honey-bees-towards-a-pesticide-residues-biomonitor
#16
Niell Silvina, Jesús Florencia, Pérez Nicolás, Pérez Cecilia, Pareja Lucía, Silvana Abbate, Carrasco-Letelier Leonidas, Díaz Sebastián, Mendoza Yamandú, Cesio Verónica, Heinzen Horacio
The beehive as a quantitative monitor of pesticide residues applied over a soybean crop was studied through a semi field experiment of controlled exposure of honey bees to pesticides in macro tunnels. The distribution within exposed beehives of pesticides commonly used in soybean plantation, was assessed. Residue levels of insecticides in soybean leaves, honey bees, wax, honey and pollen were analyzed. The transference from pesticides present in the environment into the beehive was evidenced. The obtained results allow relating pesticide concentrations present in the environment with traces found in foraging bees...
January 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28069631/pollination-reservoirs-in-lowbush-blueberry-ericales-ericaceae
#17
E M Venturini, F A Drummond, A K Hoshide, A C Dibble, L B Stack
Pollinator-dependent agriculture heavily relies upon a single pollinator-the honey bee. To diversify pollination strategies, growers are turning to alternatives. Densely planted reservoirs of pollen- and nectar-rich flowers (pollination reservoirs, hereafter "PRs") may improve pollination services provided by wild bees. Our focal agroecosystem, lowbush blueberry (Vaccinium angustifolium Aiton), exists in a simple landscape uniquely positioned to benefit from PRs. First, we contrast bee visitation rates and use of three types of PR...
January 9, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28062536/a-comparison-of-honey-bee-collected-pollen-from-working-agricultural-lands-using-light-microscopy-and-its-metabarcoding
#18
M D Smart, R S Cornman, D D Iwanowicz, M McDermott-Kubeczko, J S Pettis, M S Spivak, C R V Otto
Taxonomic identification of pollen has historically been accomplished via light microscopy but requires specialized knowledge and reference collections, particularly when identification to lower taxonomic levels is necessary. Recently, next-generation sequencing technology has been used as a cost-effective alternative for identifying bee-collected pollen; however, this novel approach has not been tested on a spatially or temporally robust number of pollen samples. Here, we compare pollen identification results derived from light microscopy and DNA sequencing techniques with samples collected from honey bee colonies embedded within a gradient of intensive agricultural landscapes in the Northern Great Plains throughout the 2010-2011 growing seasons...
January 6, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28057943/taxonomic-description-of-in-situ-bee-pollen-from-the-middle-eocene-of-germany
#19
FriĐgeir Grímsson, Reinhard Zetter, Conrad C Labandeira, Michael S Engel, Torsten Wappler
The middle Eocene Messel and Eckfeld localities are renowned for their excellently preserved faunas and diverse floras. Here we describe for the first time pollen from insect-pollinated plants found in situ on well-preserved ancient bees using light and scanning electron microscopy. There have been 140 pollen types reported from Messel and 162 pollen types from Eckfeld. Here we document 23 pollen types, six from Messel and 18 from Eckfeld (one is shared). The taxa reported here are all pollinated by insects and mostly not recovered in the previously studied dispersed fossil pollen records...
January 2, 2017: Grana
https://www.readbyqxmd.com/read/28045085/expression-of-acetylcholinesterase-1-is-associated-with-brood-rearing-status-in-the-honey-bee-apis-mellifera
#20
Young Ho Kim, Ju Hyeon Kim, Kyungmun Kim, Si Hyeock Lee
Acetylcholinesterase 1 (AmAChE1) of the honey bee, Apis mellifera, has been suggested to have non-neuronal functions. A systematic expression profiling of AmAChE1 over a year-long cycle on a monthly basis revealed that AmAChE1 was predominantly expressed in both head and abdomen during the winter months and was moderately expressed during the rainy summer months. Interestingly, AmAChE1 expression was inhibited when bees were stimulated for brood rearing by placing overwintering beehives in strawberry greenhouses with a pollen diet, whereas it resumed when the beehives were moved back to the cold field, thereby suppressing brood rearing...
January 3, 2017: Scientific Reports
keyword
keyword
48421
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"