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https://www.readbyqxmd.com/read/29775065/maldi-imaging-analysis-of-neuropeptides-in-africanized-honeybee-apis-mellifera-brain-effect-of-aggressiveness
#1
Marcel Pratavieira, Anally Ribeiro da Silva Menegasso, Franciele Grego Esteves, Kenny Umino Sato, Osmar Malaspina, Mario Sérgio Palma
The aggressiveness in honeybees seems to be regulated by multiple genes, under the influence of different factors, such as polyethism of workers, environmental factors, and response to alarm pheromones, creating a series of behavioral responses. It is suspected that neuropeptides seem to be involved with the regulation of the aggressive behavior. The role of allatostatin and tachykinin-related neuropeptides in honeybee brain during the aggressive behavior is unknown; thus, worker honeybees were stimulated to attack and to sting leather targets hanged in front of the colonies...
May 18, 2018: Journal of Proteome Research
https://www.readbyqxmd.com/read/29769608/rapid-parallel-evolution-overcomes-global-honey-bee-parasite
#2
Melissa Oddie, Ralph Büchler, Bjørn Dahle, Marin Kovacic, Yves Le Conte, Barbara Locke, Joachim R de Miranda, Fanny Mondet, Peter Neumann
In eusocial insect colonies nestmates cooperate to combat parasites, a trait called social immunity. However, social immunity failed for Western honey bees (Apis mellifera) when the ectoparasitic mite Varroa destructor switched hosts from Eastern honey bees (Apis cerana). This mite has since become the most severe threat to A. mellifera world-wide. Despite this, some isolated A. mellifera populations are known to survive infestations by means of natural selection, largely by supressing mite reproduction, but the underlying mechanisms of this are poorly understood...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29767736/pollination-of-granadilla-passiflora-ligularis-benefits-from-large-wild-insects
#3
Catalina Gutiérrez-Chacón, Felix Fornoff, Rodulfo Ospina-Torres, Alexandra-Maria Klein
The contribution of wild pollinators to food production has recently been assessed for many crops, although it remains unclear for several tropical crops. Granadilla (Passiflora ligularis Juss), a crop native to the tropical Andes, is one such crop where a gap exists regarding comprehensive knowledge about its pollination system. In a field experiment in the Colombian Andes, we 1) describe flower visitors in terms of visit quantity (visitation rate) and quality (touches of flower-reproductive structures), 2) assess the pollination system by comparing fruit set and fruit weight per flower in three pollination treatments: pollinator exclusion, open pollination, and supplementary pollination, and 3) evaluate pollination deficits (difference between open and supplementary pollination) in relation to pollinator density...
May 15, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29764663/tropilaelaps-mite-an-emerging-threat-to-european-honey-bee
#4
REVIEW
Panuwan Chantawannakul, Samuel Ramsey, Dennis vanEngelsdorp, Kitiphong Khongphinitbunjong, Patcharin Phokasem
The risk of transmission of honey bee parasites has increased substantially as a result of trade globalization and technical developments in transportation efficacy. Great concern over honey bee decline has accelerated research on newly emerging bee pests and parasites. These organisms are likely to emerge from Asia as it is the only region where all 10 honey bee species co-occur. Varroa destructor, an ectoparasitic mite, is a classic example of a pest that has shifted from A. cerana, a cavity nesting Asian honey bee to A...
April 2018: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29764654/drivers-of-colony-losses
#5
REVIEW
Nathalie Steinhauer, Kelly Kulhanek, Karina Antúnez, Hannelie Human, Panuwan Chantawannakul, Marie-Pierre Chauzat, Dennis vanEngelsdorp
Over the past decade, in some regions of the world, honey bee (Apis mellifera L.) colonies have experienced rates of colony loss that are difficult for beekeepers to sustain. The reasons for losses are complex and interacting, with major drivers including Varroaand related viruses, pesticides, nutrition and beekeeper practices. In these endeavors it has also become apparent that defining a dead colony, and singling out the effects of specific drivers of loss, is not so straightforward. Using the class of neonicotinoid pesticides as an example we explain why quantifying risk factor impact at the colony level is at times elusive and in some cases unpractical...
April 2018: Current Opinion in Insect Science
https://www.readbyqxmd.com/read/29758240/imidacloprid-intensifies-its-impact-on-honeybee-and-bumblebee-cellular-immune-response-when-challenged-with-lps-lippopolysacharide-of-escherichia-coli
#6
Louise Walderdorff, Philippe Laval-Gilly, Antoine Bonnefoy, Jaïro Falla-Angel
Insect hemocytes play an important role in insects' defense against environmental stressors as they are entirely dependent on their innate immune system for pathogen defense. In recent years a dramatic decline of pollinators has been reported in many countries. The drivers of this declines appear to be associated with pathogen infections like viruses, bacteria or fungi in combination with pesticide exposure. The aim of this study was thus to investigate the impact of imidacloprid, a neonicotinoid insecticide, on the cellular immune response of two pollinators (Apis mellifera and Bombus terrestris) during simultaneous immune activation with LPS (lipopolysaccharide) of Escherichia coli...
May 11, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29756169/vitellogenin-transcytosis-in-follicular-cells-of-the-honeybee-apis-mellifera-and-the-wasp-polistes-simillimus
#7
Virgínia Teles Dohanik, Wagner Gonzaga Gonçalves, Leandro Licursi Oliveira, José Cola Zanuncio, José Eduardo Serrão
Vitellogenin receptor (VgR) is a low-density lipoprotein receptor responsible for the mediated endocytosis of vitellogenin (Vg) during egg formation in insects. The maturing oocyte is enveloped by a follicular epithelium, which has large intercellular spaces during Vg accumulation (patency). However, Vg has been reported in the cytoplasm of follicular cells, indicating that there may be a transcellular route for its transport. This study verified the presence of VgR in the follicular cells of the ovaries of the honeybee Apis mellifera and the wasp Polistes simillimus in order to evaluate if Vg is transported via transcytosis in these insects...
May 13, 2018: Protoplasma
https://www.readbyqxmd.com/read/29751904/quality-evaluation-of-omani-honey
#8
Mohamed Al-Farsi, Sharifa Al-Belushi, Abeer Al-Amri, Ahlam Al-Hadhrami, Mahfoodha Al-Rusheidi, Amani Al-Alawi
This study was intended to evaluate the quality parameters of 58 Apis mellifera honey samples, from different regions in the Sultanate of Oman. Physicochemical analyses were carried out and examined according to the Gulf Standardization Organization (GSO). The results revealed that 64.4% of the samples were failing to meet the GSO standards due to acidity, hydroxyl methyl furfural (HMF), diastase, sucrose, and glucose & fructose. Acidity and HMF were above the limits in 30% and 29% of the failed samples respectively, where diastase and total glucose & fructose were below the limits in 25% and 5% respectively...
October 1, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29749926/metagenomic-analysis-of-varroa-free-australian-honey-bees-apis-mellifera-shows-a-diverse-picornavirales-virome
#9
John M K Roberts, Denis L Anderson, Peter A Durr
The viral landscape of the honey bee (Apismellifera) has changed as a consequence of the global spread of the parasitic mite Varroa destructor and accompanying virulent strains of the iflavirus deformed wing virus (DWV), which the mite vectors. The presence of DWV in honey bee populations is known to influence the occurrence of other viruses, suggesting that the current known virome of A. mellifera may be undercharacterized. Here we tested this hypothesis by examining the honey bee virome in Australia, which is uniquely free of parasitic mites or DWV...
May 11, 2018: Journal of General Virology
https://www.readbyqxmd.com/read/29748510/toxicity-of-selected-acaricides-to-honey-bees-apis-mellifera-and-varroa-varroa-destructor-anderson-and-trueman-and-their-use-in-controlling-varroa-within-honey-bee-colonies
#10
Aleš Gregorc, Mohamed Alburaki, Blair Sampson, Patricia R Knight, John Adamczyk
The efficacies of various acaricides in order to control a parasitic mite, the Varroa mite, Varroa destructor , of honey bees, were measured in two different settings, namely, in laboratory caged honey bees and in queen-right honey bee colonies. The Varroa infestation levels before, during, and after the acaricide treatments were determined in two ways, namely: (1) using the sugar shake protocol to count mites on bees and (2) directly counting the dead mites on the hive bottom inserts. The acaricides that were evaluated were coumaphos, tau-fluvalinate, amitraz, thymol, and natural plant compounds (hop acids), which were the active ingredients...
May 10, 2018: Insects
https://www.readbyqxmd.com/read/29748485/organochlorine-pesticides-in-honey-and-pollen-samples-from-managed-colonies-of-the-honey-bee-apis-mellifera-linnaeus-and-the-stingless-bee-scaptotrigona-mexicana-gu%C3%A3-rin-from-southern-mexico
#11
Jovani Ruiz-Toledo, Rémy Vandame, Ricardo Alberto Castro-Chan, Rosa Patricia Penilla-Navarro, Jaime Gómez, Daniel Sánchez
In this paper, we show the results of investigating the presence of organochlorine pesticides in honey and pollen samples from managed colonies of the honey bee, Apis mellifera L. and of the stingless bee Scaptotrigona mexicana Guérin. Three colonies of each species were moved into each of two sites. Three samples of pollen and three samples of honey were collected from each colony: the first collection occurred at the beginning of the study and the following ones at every six months during a year...
May 10, 2018: Insects
https://www.readbyqxmd.com/read/29746645/pollen-collection-honey-production-and-pollination-services-managing-honey-bees-in-an-agricultural-setting
#12
Shelley E Hoover, Lynae P Ovinge
Hybrid canola seed production is an important pollination market in Canada; typically both honey bees (Apis mellifera L. (Hymenoptera: Apidae)) and Alfalfa Leafcutting bees (Megachile rotundata Fab. (Hymenoptera: Megachilidae)) are concurrently managed to ensure pollination in this high-value crop. Beekeepers are paid to provide pollination services, and the colonies also produce a honey crop from the canola. Pollen availability from male-fertile plants is carefully managed in this crop to provide an abundance of pollen to fertilize male-sterile ('female') plants...
May 9, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29745171/-research-progress-of-the-interaction-between-apis-mellifera-and-varroa-destructor-mediated-by-pheromones
#13
Hao Hao Zhang, Zhen Guo Liu, You Hui Gong, Qing Yun Diao
Varroa destructor is a virulent ectoparasitic mite of western honeybee (Apis mellifera), and considered the greatest threat to apiculture around the world. Chemical method is widely used for the management of this mite. However, this method can easily induce the resistance of V. destructor to acaricides, toxicity of acaricides to honeybee and the residues in bee products. Therefore, many safe preventions and control techniques were developed to treat mite in recent years. Using pheromones of honeybee to control V...
June 18, 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
https://www.readbyqxmd.com/read/29729260/nutritional-value-and-taste-play-different-roles-in-learning-and-memory-in-the-honey-bee-apis-mellifera
#14
Julie A Mustard, Valerie Alvarez, Sofy Barocio, Jamie Mathews, Alexander Stoker, Kashif Malik
Honey bees will learn to respond to an odor when their antennae are stimulated with sucrose, even if they are not fed during the conditioning phase. However, if they are not fed, the memory of this association is significantly reduced 24 h after conditioning. These results suggest that stimulation of proboscis with sucrose and/or the nutritional quality of the reward plays an important role in establishing a long lasting memory. Three sugars, xylose, sorbitol and mannitol, are used to investigate the relationship among learning, sensory perception and nutritional value...
May 2, 2018: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29724776/effects-of-flight-activity-and-age-on-oxidative-damage-in-the-honey-bee-apis-mellifera
#15
Joseph W Margotta, Stephen P Roberts, Michelle M Elekonich
Frequent and highly aerobic behaviors likely contribute to naturally occurring stress, accelerate senescence, and limit lifespan. To understand how the physiological and cellular mechanisms that determine the onset and duration of senescence are shaped by behavioral development and behavioral duration, we exploited the tractability of the honey bee ( Apis mellifera ) model system. First, we determined if a cause-effect relationship exists between honey bee flight and oxidative stress by comparing oxidative damage accrued from intense flight bouts to damage accrued from D-galactose ingestion, which induces oxidative stress and limit lifespan in other insects...
May 3, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29722061/cellular-energy-metabolism-maintains-young-status-in-old-queen-honey-bees-apis-mellifera
#16
Cheng-Yen Lu, Jiantai Timothy Qiu, Chin-Yuan Hsu
Trophocytes and oenocytes of queen honey bees are used in studies of cellular longevity, but their cellular energy metabolism with age is poorly understood. In this study, the molecules involved in cellular energy metabolism were evaluated in the trophocytes and oenocytes of young and old queen bees. The findings indicated that there were no significant differences between young and old queen bees in β-oxidation, glycolysis, and protein synthesis. These results indicate that the cellular energy metabolism of trophocytes and oenocytes in old queen bees is similar to young queen bees and suggests that maintaining cellular energy metabolism in a young status may be associated with the longevity of queen bees...
May 2, 2018: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29718285/associations-between-the-small-hive-beetle-and-the-yeast-kodamaea-ohmeri-throughout-the-host-life-cycle
#17
Brogan A Amos, Diana L Leemon, Richard A Hayes, Bronwen W Cribb, Michael J Furlong
The small hive beetle, Aethina tumida Murray (Coleoptera: Nitidulidae), is a pest of colonies of social bees, including the honeybee Apis mellifera L. (Hymenoptera: Apidae). We investigated A. tumida oviposition behavior and development and found that it laid eggs in clutches that ranged in size (3-75 eggs per clutch) and that when fed on hive products in laboratory culture (27°C; RH 65%; 12:12 (L:D) h) it completed three larval instars before pupation. The yeast Kodamaea ohmeri (Etchells & Bell) Y. Yamada, T...
May 1, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29705479/bibliometric-analysis-of-apitherapy-in-complementary-medicine-literature-between-1980-and-2016
#18
Engin Şenel, Emre Demir
Apitherapy is the medical use and the application of honey bee products and in recent years there has been a growing interest in studies of this field. We aimed to perform a bibliometric study in the apitherapy literature. We used Web of Science database in this study and our search retrieved a total of 6917 documents of which great majority (82.4%) was original articles. Brazil was found to ranked first on the publication number with 889 papers followed by the USA, China, Japan and Turkey. We measured a productivity score for each country and the most productive countries in apitherapy field were Switzerland (2...
May 2018: Complementary Therapies in Clinical Practice
https://www.readbyqxmd.com/read/29705058/molecular-physiological-and-behavioral-responses-of-honey-bee-apis-mellifera-drones-to-infection-with-microsporidian-parasites
#19
Holly L Holt, Gabriel Villar, Weiyi Cheng, Jun Song, Christina M Grozinger
Susceptibility to pathogens and parasites often varies between sexes due to differences in life history traits and selective pressures. Nosema apis and Nosema ceranae are damaging intestinal pathogens of European honey bees (Apis mellifera). Nosema pathology has primarily been characterized in female workers where infection is energetically costly and accelerates worker behavioral maturation. Few studies, however, have examined infection costs in male honey bees (drones) to determine if Nosema similarly affects male energetic status and sexual maturation...
April 26, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29696753/biosynthetic-and-functional-color-scent-associations-in-flowers-of-papaver-nudicaule-and-its-impact-on-pollinators
#20
Jaime Martinez-Harms, Anne-Christin Warskulat, Bettina Dudek, Grit Kunert, Sybille Lorenz, Bill S Hansson, Bernd Schneider
Despite the increasing evidence for biosynthetic connections between flower pigments and volatiles, examples of such relationships in polymorphic plant species remains limited. Here, we investigated color-scent associations in flowers from Papaver nudicaule (Papaveraceae). We determined the spectral reflectance and the scent composition of flowers of four color cultivars. We found that pigments and volatiles occur in specific combinations in flowers of P. nudicaule. The presence of indole in the bouquets is strongly associated with the occurrence of yellow pigments called nudicaulins, for which indole is one of the final biosynthetic precursors...
April 26, 2018: Chembiochem: a European Journal of Chemical Biology
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