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https://www.readbyqxmd.com/read/28806743/correction-gene-expression-and-immunohistochemical-analyses-of-mkast-suggest-its-late-pupal-and-adult-specific-functions-in-the-honeybee-brain
#1
Atsuhiro Yamane, Hiroki Kohno, Tsubomi Ikeda, Kumi Kaneko, Atsushi Ugajin, Toshiyuki Fujita, Takekazu Kunieda, Takeo Kubo
[This corrects the article DOI: 10.1371/journal.pone.0176809.].
2017: PloS One
https://www.readbyqxmd.com/read/28801873/transgenic-silkworms-secrete-the-recombinant-glycosylated-mrjp1-protein-of-chinese-honeybee-apis-cerana-cerana
#2
Zhengying You, Qiujie Qian, Yiran Wang, Jiaqian Che, Lupeng Ye, Lirong Shen, Boxiong Zhong
Major royal jelly protein-1 (MRJP1) is the most abundant glycoprotein of royal jelly (RJ) and is considered a potential component of functional foods. In this study, we used silkworm transgenic technology to obtain five transgenic silkworm lineages expressing the exogenous recombinant Chinese honeybee, Apis cerana cerana, protein-1 (rAccMRJP1) under the control of a fibroin light chain (Fib-L) promoter in the posterior silk glands. The protein was successfully secreted into cocoons; specifically, the highest rAccMRJP1 protein content was 0...
August 11, 2017: Transgenic Research
https://www.readbyqxmd.com/read/28801686/mir-12-and-mir-124-contribute-to-defined-early-phases-of-long-lasting-and-transient-memory
#3
Julia Michely, Susanne Kraft, Uli Müller
MicroRNAs (miRNAs) are important epigenetic regulators of mRNA translation implicated in long-lasting synaptic plasticity and long-term memory (LTM). Since recent findings demonstrated a role of epigenetic regulation of gene expression in early memory phases we investigated whether epigenetic regulation by miRNAs also contributes to early memory phases. We used the olfactory associative learning paradigm in honeybees and addressed the contribution of miRNAs depending on the conditioning strength. We selected miR-12, miR-124, and miR-125 that have been implicated in processes of neuronal plasticity and analysed their contribution to non-associative and associative learning using miRNA inhibitors...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28798494/identification-and-functional-characterization-of-the-sex-determining-gene-doublesex-in-the-sawfly-athalia-rosae%C3%A2-hymenoptera-tenthredinidae
#4
Shotaro Mine, Megumi Sumitani, Fugaku Aoki, Masatsugu Hatakeyama, Masataka G Suzuki
Sexual fate of the sawfly, Athalia rosae (Hymenoptera: Tenthredinidae) is determined by the complementary sex determination (CSD) mechanism as is the case in honeybees. However, to date, genes involved in sex determination have not been identified in this species. In this study, we attempted to identify orthologs of complementary sex-determiner (csd), feminizer (fem), and doublesex (dsx) from the A. rosae genome, all of which are crucial components of the sex determination cascade in the honeybee. As a result, we identified a sawfly ortholog of dsx (designated as Ardsx)...
2017: Applied Entomology and Zoology
https://www.readbyqxmd.com/read/28795524/resin-foraging-dynamics-in-varroa-destructor-infested-hives-a-case-of-medication-of-kin
#5
Michelina Pusceddu, Giannella Piluzza, Panagiotis Theodorou, Franco Buffa, Luca Ruiu, Simonetta Bullitta, Ignazio Floris, Alberto Satta
Social insects have evolved colony behavioral, physiological and organizational adaptations (social immunity) to reduce the risks of parasitization and/or disease transmission. The collection of resin from various plants and its use in the hive as propolis, is a clear example of behavioral defense. For Apis mellifera, an increased propolis content in the hive may correspond to variations in the microbial load of the colony and to a down-regulation of an individual bee's immune response. However, many aspects of such antimicrobial mechanism still need to be clarified...
August 10, 2017: Insect Science
https://www.readbyqxmd.com/read/28792955/a-robotic-system-for-researching-social-integration-in-honeybees
#6
Karlo Griparić, Tomislav Haus, Damjan Miklić, Marsela Polić, Stjepan Bogdan
In this paper, we present a novel robotic system developed for researching collective social mechanisms in a biohybrid society of robots and honeybees. The potential for distributed coordination, as observed in nature in many different animal species, has caused an increased interest in collective behaviour research in recent years because of its applicability to a broad spectrum of technical systems requiring robust multi-agent control. One of the main problems is understanding the mechanisms driving the emergence of collective behaviour of social animals...
2017: PloS One
https://www.readbyqxmd.com/read/28790503/mast-cells-and-ige-can-enhance-survival-during-innate-and-acquired-host-responses-to-venoms
#7
Stephen J Galli, Philipp Starkl, Thomas Marichal, Mindy Tsai
Mast cells and immunoglobulin E (IgE) antibodies are thought to promote health by contributing to host responses to certain parasites, but other beneficial functions have remained obscure. Venoms provoke innate inflammatory responses and pathology reflecting the activities of the contained toxins. Venoms also can induce allergic sensitization and development of venom-specific IgE antibodies, which can predispose some subjects to exhibit anaphylaxis upon subsequent exposure to the relevant venom. We found that innate functions of mast cells, including degradation of venom toxins by mast cell-derived proteases, enhanced survival in mice injected with venoms from the honeybee, two species of scorpion, three species of poisonous snakes, or the Gila monster...
2017: Transactions of the American Clinical and Climatological Association
https://www.readbyqxmd.com/read/28783129/effects-of-oxalic-acid-on-apis-mellifera-hymenoptera-apidae
#8
Eva Rademacher, Marika Harz, Saskia Schneider
Abstract: Oxalic acid dihydrate is used to treat varroosis of Apis mellifera. This study investigates lethal and sublethal effects of oxalic acid dihydrate on individually treated honeybees kept in cages under laboratory conditions as well as the distribution in the colony. After oral application, bee mortality occurred at relatively low concentrations (No Observed Adverse Effect Level (NOAEL) 50 µg/bee; Lowest Observed Adverse Effect Level (LOAEL) 75 µg/bee) compared to the dermal treatment (NOAEL 212.5 µg/bee; LOAEL 250 µg/bee)...
August 7, 2017: Insects
https://www.readbyqxmd.com/read/28772181/biomonitoring-status-and-source-risk-assessment-of-polycyclic-aromatic-hydrocarbons-pahs-using-honeybees-pine-tree-leaves-and-propolis
#9
Navid Kargar, Golnar Matin, Amir Abbas Matin, Hasan Baha Buyukisik
In this study, to identify and quantify the sources of airborne polycyclic aromatic hydrocarbons (PAHs), we gathered honeybee, pine tree leaf, and propolis samples to serve as bioindicators from five stations in the village of "Bozkoy" in the Aliaga industrial district of Izmir (Turkey) during April-May 2014. The PAH concentrations which measured by gas chromatography (GC) varied from 261.18 to 553.33 μg kg(-1) dry weight (dw) in honeybee samples, 138.57-853.67 μg kg(-1) dw in pine leaf samples, and 798...
July 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/28761144/plant-survival-and-keystone-pollinator-species-in-stochastic-coextinction-models-role-of-intrinsic-dependence-on-animal-pollination
#10
Anna Traveset, Cristina Tur, Víctor M Eguíluz
Coextinction models are useful to understand community robustness to species loss and resilience to disturbances. We simulated pollinator extinctions in pollination networks by using a hybrid model that combined a recently developed stochastic coextinction model (SCM) for plant extinctions and a topological model (TCM) for animal extinctions. Our model accounted for variation in interaction strengths and included empirical estimates of plant dependence on pollinators to set seeds. The stochastic nature of such model allowed us determining plant survival to single (and multiple) extinction events, and identifying which pollinators (keystone species) were more likely to trigger secondary extinctions...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761114/absence-of-deformed-wing-virus-and-varroa-destructor-in-australia-provides-unique-perspectives-on-honeybee-viral-landscapes-and-colony-losses
#11
John M K Roberts, Denis L Anderson, Peter A Durr
Honeybee (Apis mellifera) health is threatened globally by the complex interaction of multiple stressors, including the parasitic mite Varroa destructor and a number of pathogenic viruses. Australia provides a unique opportunity to study this pathogenic viral landscape in the absence of V. destructor. We analysed 1,240A. mellifera colonies across Australia by reverse transcription-polymerase chain reaction (RT-PCR) and next-generation sequencing (NGS). Five viruses were prevalent: black queen cell virus (BQCV), sacbrood virus (SBV), Israeli acute paralysis virus (IAPV) and the Lake Sinai viruses (LSV1 and LSV2), of which the latter three were detected for the first time in Australia...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28759475/component-resolved-diagnostics-for-hymenoptera-venom-allergy
#12
Thilo Jakob, Ulrich Müller, Arthur Helbling, Edzard Spillner
PURPOSE OF REVIEW: Component-resolved diagnostics makes use of defined allergen molecules to analyse IgE-mediated sensitizations at a molecular level. Here, we review recent studies on the use of component-resolved diagnostics in the field of Hymenoptera venom allergy (HVA) and discuss its benefits and limitations. RECENT FINDINGS: Component resolution in HVA has moved from single molecules to panels of allergens. Detection of specific immunoglobulin E (sIgE) to marker and cross-reactive venom allergens has been reported to facilitate the discrimination between primary sensitization and cross-reactivity and thus, to provide a better rationale for prescribing venom immunotherapy (VIT), particularly in patients sensitized to both honeybee and vespid venom...
August 11, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28757385/trueness-and-precision-of-the-real-time-rt-pcr-method-for-quantifying-the-chronic-bee-paralysis-virus-genome-in-bee-homogenates-evaluated-by-a-comparative-inter-laboratory-study
#13
Frank Schurr, Nicolas Cougoule, Marie-Pierre Rivière, Magali Ribière-Chabert, Hamid Achour, Dán Ádám, Carlos Castillo, Dirk C de Graaf, Eva Forsgren, Anna Granato, Sirpa Heinikainen, Júlia Jurovčíková, Per Kryger, Christine Manson, Marie-Françoise Ménard, Stéphane Perennes, Marc O Schäfer, Elena San Miguel Ibañez, João Silva, Ivana Tlak Gajger, Victoria Tomkies, Ivan Toplak, Alain Viry, Dagmara Zdańska, Eric Dubois
The Chronic bee paralysis virus (CBPV) is the aetiological agent of chronic bee paralysis, a contagious disease associated with nervous disorders in adult honeybees leading to massive mortalities in front of the hives. Some of the clinical signs frequently reported, such as trembling, may be confused with intoxication syndromes. Therefore, laboratory diagnosis using real-time PCR to quantify CBPV loads is used to confirm disease. Clinical signs of chronic paralysis are usually associated with viral loads higher than 10(8) copies of CBPV genome copies per bee (8 log10 CBPV/bee)...
July 27, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28751766/foragers-of-sympatric-asian-honey-bee-species-intercept-competitor-signals-by-avoiding-benzyl-acetate-from-apis-cerana-alarm-pheromone
#14
Ping Wen, Yanan Cheng, Yufeng Qu, Hongxia Zhang, Jianjun Li, Heather Bell, Ken Tan, James Nieh
While foraging, animals can form inter- and intraspecific social signalling networks to avoid similar predators. We report here that foragers of different native Asian honey bee species can detect and use a specialized alarm pheromone component, benzyl acetate (BA), to avoid danger. We analysed the volatile alarm pheromone produced by attacked workers of the most abundant native Asian honey bee, Apis cerana and tested the responses of other bee species to these alarm signals. As compared to nest guards, A. cerana foragers produced 3...
July 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28751492/honeybees-in-a-virtual-reality-environment-learn-unique-combinations-of-colour-and-shape
#15
Claire Rusch, Eatai Roth, Clément Vinauger, Jeffrey A Riffell
Honeybees are well-known models for the study of visual learning and memory. Whereas most of our knowledge of learned responses comes from experiments using free-flying bees, a tethered preparation would allow fine-scale control of the visual stimuli as well as accurate characterization of the learned responses. Unfortunately, conditioning procedures using visual stimuli in tethered bees have been limited in their efficacy. Here in this study, using a novel virtual reality environment and a differential training protocol in tethered walking bees, we show that the majority of honeybees learn visual stimuli, and need only six paired training trials to learn the stimulus...
July 27, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28749380/handling-interference-effects-in-foraging-with-bucket-brigades
#16
Wonki Lee, DaeEun Kim
Many kinds of bio-inspired tasks have been tested with swarm robotics and task partitioning is one of challenging subjects. In nature, it is well known that some colonies of social insects such as honeybees, termites, and ants use task partitioning strategies for their survival. In this paper, we demonstrate an effect of task partitioning strategy called bucket brigade that uses the direct transfer of materials or food between a pair of workers. We propose a task partitioning strategy based on moving speeds of agents for the foraging task...
July 27, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28748641/eaaci-guidelines-on-allergen-immunotherapy-hymenoptera-venom-allergy
#17
Gunter J Sturm, Eva-Maria Varga, Graham Roberts, Holger Mosbech, M Beatrice Bilò, Cezmi A Akdis, Darío Antolín-Amérigo, Ewa Cichocka-Jarosz, Radoslaw Gawlik, Thilo Jakob, Mitja Kosnik, Joanna Lange, Ervin Mingomataj, Dimitris I Mitsias, Markus Ollert, Joanna N G Oude Elberink, Oliver Pfaar, Constantinos Pitsios, Valerio Pravettoni, Franziska Ruëff, Betül Ayşe Sin, Ioana Agache, Elizabeth Angier, Stefania Arasi, Moises A Calderón, Montserrat Fernandez-Rivas, Susanne Halken, Marek Jutel, Susanne Lau, Giovanni B Pajno, Ronald van Ree, Dermot Ryan, Otto Spranger, Roy Gerth van Wijk, Sangeeta Dhami, Hadar Zaman, Aziz Sheikh, Antonella Muraro
Hymenoptera venom allergy is a potentially life-threatening allergic reaction following a honeybee, vespid or ant sting. Systemic allergic sting reactions have been reported in up to 7.5% of adults and up to 3.4% of children. They can be mild and restricted to the skin or moderate-to-severe with a risk of life-threatening anaphylaxis. Patients should carry an emergency kit containing an adrenaline autoinjector, H1 -antihistamines, and corticosteroids depending on the severity of their previous sting reaction(s)...
July 27, 2017: Allergy
https://www.readbyqxmd.com/read/28742491/the-canary-in-the-coalmine-bee-declines-as-an-indicator-of-environmental-health
#18
Dave Goulson, Elizabeth Nicholls
Bee declines have received much attention of late, but there is considerable debate and confusion as to the extent, significance and causes of declines. In part, this reflects conflation of data for domestic honeybees, numbers of which are largely driven by economic factors, with those for wild bees, many of which have undergone marked range contractions but for the majority of which we have no good data on population size. There is no doubt that bees are subject to numerous pressures in the modern world. The abundance and diversity of flowers has declined along with availability of suitable nest sites, bees are chronically exposed to cocktails of agrochemicals, and they are simultaneously exposed to novel parasites and pathogens accidentally spread by humans...
September 1, 2016: Science Progress
https://www.readbyqxmd.com/read/28741079/characterization-of-the-first-order-visual-interneurons-in-the-visual-system-of-the-bumblebee-bombus-terrestris
#19
Juha Rusanen, Antti Vähäkainu, Matti Weckström, Kentaro Arikawa
The bumblebee (Bombus terrestris) has become a common model animal in the study of various aspects of vision and visually guided behavior. Although the bumblebee visual system has been studied to some extent, little is known about the functional role of the first visual neuropil, the lamina. In this work, we provide an anatomical and electrophysiological description of the first-order visual interneurons, lamina monopolar cells (LMCs), of the bumblebee. Using intracellular recording coupled with dye injection, we found that bumblebee LMCs morphologically resemble those found in the honeybee, although only the LMC type L1 cells could be morphologically matched directly between the species...
July 24, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/28740286/physicochemical-melissopalynological-and-antioxidant-properties-of-artisanal-honeys-from-lebanon
#20
Katherine Jaafar, Janay Haidar, Sawsan Kuraydiyyah, Tarek Ghaddar, Khouzama Knio, Baraem Ismail, Imad Toufeili
Sixteen honeydew and 15 floral honeys from Lebanon were analyzed for pollen spectra and physicochemical parameters. A total of 37 families and 67 taxa were recorded with the honeybees producing honeydew honey exhibiting a more diverse foraging behavior than those making floral honeys. The honeydew and floral honeys exhibited differences in moisture content, pH, electrical conductivity, color, protein and Maillard reaction products. The honeydew honeys contained more total phenols, had higher antioxidant contents, and displayed higher antioxidant capacities than the floral samples in the Trolox equivalent antioxidant capacity, oxygen radical absorbance capacity, inhibition of superoxide dismutase activity and protection of red blood cells against hemolysis assays...
July 2017: Journal of Food Science and Technology
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