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Morteza Behnam, Hossein Pourghassem
BACKGROUND: EEG signal analysis of pediatric patients plays vital role for making a decision to intervene in presurgical stages. NEW METHOD: In this paper, an offline seizure detection algorithm based on definition of a seizure-specific wavelet (Seizlet) is presented. After designing the Seizlet, by forming cone of influence map of the EEG signal, four types of layouts are analytically designed that are called Seizure Modulus Maximas Patterns (SMMP). By mapping CorrEntropy Induced Metric (CIM) series, four structural features based on least square estimation of fitted non-tilt conic ellipse are extracted that are called CorrEntropy Ellipse Features (CEF)...
October 18, 2016: Journal of Neuroscience Methods
Douglas B Sponsler, Reed M Johnson
The role of pesticides in recent honey bee losses is controversial, partly because field studies often fail to detect effects predicted by laboratory studies. This dissonance highlights a critical gap in the field of honey bee toxicology: there exists little mechanistic understanding of the patterns and processes of exposure that link honey bees to pesticides in their environment. We submit that 2 key processes underlie honey bee pesticide exposure: (1) the acquisition of pesticide by foraging bees and (2) the in-hive distribution of pesticide returned by foragers...
October 21, 2016: Environmental Toxicology and Chemistry
Justin Greiwe, Jonathan A Bernstein
Chronic urticaria affects up to 1-3% of the general population and contributes to significant direct and indirect medical costs as well as decreased quality of life, which has a significant economic impact on our health care system. Areas Covered: Given the prevalence of this condition on a large sector of the population, finding lasting relief for refractory cases is essential and is the focus of this review. Expert Commentary: The choice of appropriate therapy in chronic refractory urticaria is not a "one-size fits all" approach...
October 17, 2016: Expert Review of Clinical Immunology
Anita Giglio, Anna Ammendola, Silvia Battistella, Attilio Naccarato, Alberto Pallavicini, Enrico Simeon, Antonio Tagarelli, Piero Giulio Giulianini
Honeybees have become important tools for the ecotoxicological assessment of soil, water and air metal contamination due to their extraordinary capacity to bioaccumulate toxic metals from the environment. The level of heavy metal pollution in the Trieste city was monitored using foraging bees of Apis mellifera ligustica from hives owned by beekeepers in two sites strategically located in the suburban industrial area and urban ones chosen as control. The metal concentration in foraging bees was determined by inductively coupled plasma-mass spectrometry...
October 15, 2016: Environmental Science and Pollution Research International
Amelia Virginia González-Porto, Tomás Martín Arroyo, Carmen Bartolomé Esteban
BACKGROUND AND AIMS: The objective of this work was to determine the influence of the soil substrate on the characteristics and properties of a specific type of honey. As such, we analysed the features of a typical single-flower honey, thyme honey, produced in a specific Mediterranean region. Thymus is a genus of aromatic perennial plants that are native to Europe, North Africa and Asia. METHODS: A total of 70 honey samples from hives situated on limestone (38 samples) or gypsum soils (32 samples) were studied...
2016: SpringerPlus
Daniele Alberoni, Francesca Gaggìa, Loredana Baffoni, Diana Di Gioia
Nowadays, honey bees are stressed by a number of biotic and abiotic factors which may compromise to some extent the pollination service and the hive productivity. The EU ban of antibiotics as therapeutic agents against bee pathogens has stimulated the search for natural alternatives. The increasing knowledge on the composition and functions of the bee gut microbiota and the link between a balanced gut microbiota and health status have encouraged the research on the use of gut microorganisms to improve bee health...
October 8, 2016: Applied Microbiology and Biotechnology
C S Hou, B B Li, S Deng, Q Y Diao
Varroa destructor mites pose an increasing global threat to the apicultural industry and agricultural ecology; however, the issue of whether certain environmental factors reflect the level of mite infection is far from resolved. Here, a wireless sensor network (WSN) system was used to examine how V. destructor, which has vital impacts on honeybee (Apis mellifera) health and survival, affects the temperature and humidity of honeybee hives in a field experiment. This approach may facilitate early identification of V...
September 23, 2016: Genetics and Molecular Research: GMR
Alex Petric, Ernesto Guzman-Novoa, Hermann J Eberl
We present a mathematical model (a) for the infection of a honey bee colony with Nosema ceranae. This is a system of five ordinary differential equations for the dependent variables healthy and infected worker bees in the hive, healthy and infected forager bees, and disease potential deposited in the hive. The model is then (b) extended to account for increased forager losses, e.g. caused by exposure to external stressors. The model is non-autonomous with periodic coefficient functions. Algebraic complexity prevents a rigorous mathematical analysis...
October 5, 2016: Journal of Biological Dynamics
Jacqueline Degen, Andreas Kirbach, Lutz Reiter, Konstantin Lehmann, Philipp Norton, Mona Storms, Miriam Koblofsky, Sarah Winter, Petya B Georgieva, Hai Nguyen, Hayfe Chamkhi, Hanno Meyer, Pawan K Singh, Gisela Manz, Uwe Greggers, Randolf Menzel
Exploration is an elementary and fundamental form of learning about the structure of the world [1-3]. Little is known about what exactly is learned when an animal seeks to become familiar with the environment. Navigating animals explore the environment for safe return to an important place (e.g., a nest site) and to travel between places [4]. Flying central-place foragers like honeybees (Apis mellifera) extend their exploration into distances from which the features of the nest cannot be directly perceived [5-10]...
September 24, 2016: Current Biology: CB
Igor Jerković, Saša Prđun, Zvonimir Marijanović, Marina Zekić, Dragan Bubalo, Lidija Svečnjak, Carlo I G Tuberoso
Headspace solid-phase microextraction (HS-SPME) and ultrasonic solvent extraction (USE), followed by GC-MS/FID, were applied for monitoring the nectar (NE)/honey-sac (HoS)/honey (HO) pathways of the headspace, volatiles, and semi-volatiles. The major NE (4 varieties of Citrus unshiu) headspace compounds were linalool, α-terpineol, 1H-indole, methyl anthranilate, and phenylacetonitrile. Corresponding extracts contained, among others, 1H-indole, methyl anthranilate, 1,3-dihydro-2H-indol-2-one and caffeine. The major HoS headspace compounds were linalool, α-terpineol, 1,8-cineole, 1H-indole, methyl anthranilate, and cis-jasmone...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Guido Sterk, Britta Peters, Zhenglei Gao, Ulrich Zumkier
The aim of this study was to investigate the effects of Elado(®)-dressed winter oilseed rape (OSR, 10 g clothianidin & 2 g beta-cyfluthrin/kg seed) on the development, reproduction and behaviour of large earth bumble bees (Bombus terrestris) as part of a large-scale monitoring field study in Northern Germany, where OSR is usually cultivated at 25-33 % of the arable land. Both reference and test sites comprised 65 km(2) in which no other crops attractive to pollinating insects were present. Six study locations were selected per site and 10 bumble bee hives were placed at each location...
September 27, 2016: Ecotoxicology
Vincenza Granata, Marco Cascella, Roberta Fusco, Nicoletta dell'Aprovitola, Orlando Catalano, Salvatore Filice, Vincenzo Schiavone, Francesco Izzo, Arturo Cuomo, Antonella Petrillo
Background and Purpose. Contrast media (CM) for magnetic resonance imaging (MRI) may determine the development of acute adverse reactions. Objective was to retrospectively assess the frequency and severity of adverse reactions associated with gadolinium-based contrast agents (GBCAs) injection in patients who underwent MRI. Material and Methods. At our center 10608 MRI examinations with CM were performed using five different GBCAs: Gd-BOPTA (MultiHance), Gd-DTPA (Magnevist), Gd-EOBDTPA (Primovist), Gd-DOTA (Dotarem), and Gd-BTDO3A (Gadovist)...
2016: BioMed Research International
Daniel Rolke, Stefan Fuchs, Bernd Grünewald, Zhenglei Gao, Wolfgang Blenau
Possible effects of clothianidin seed-treated oilseed rape on honey bee colonies were investigated in a large-scale monitoring project in Northern Germany, where oilseed rape usually comprises 25-33 % of the arable land. For both reference and test sites, six study locations were selected and eight honey bee hives were placed at each location. At each site, three locations were directly adjacent to oilseed rape fields and three locations were situated 400 m away from the nearest oilseed rape field. Thus, 96 hives were exposed to fully flowering oilseed rape crops...
September 19, 2016: Ecotoxicology
Michael C Roberts
This article reflects on service contributions upon receiving the 2016 Society of Pediatric Psychology Wright Ross Salk Distinguished Service Award. As the title implies, worker bees make service contributions for the overall benefit of the hive and colony. So too, the scientific discipline, clinical profession, and the Society of Pediatric Psychology need the service contributions of multiple individuals to survive and thrive. Many people have made professional contributions to benefit the field and its organizational home; many more worker bees will volunteer in the future to fill important service roles and sustain the hive...
November 2016: Journal of Pediatric Psychology
Kirsten S Traynor, Jeffery S Pettis, David R Tarpy, Christopher A Mullin, James L Frazier, Maryann Frazier, Dennis vanEngelsdorp
This study measured part of the in-hive pesticide exposome by analyzing residues from live in-hive bees, stored pollen, and wax in migratory colonies over time and compared exposure to colony health. We summarized the pesticide burden using three different additive methods: (1) the hazard quotient (HQ), an estimate of pesticide exposure risk, (2) the total number of pesticide residues, and (3) the number of relevant residues. Despite being simplistic, these models attempt to summarize potential risk from multiple contaminations in real-world contexts...
2016: Scientific Reports
Johannes M Baveco, Andreas Focks, Dick Belgers, Jozef J M van der Steen, Jos J T I Boesten, Ivo Roessink
Estimating the exposure of honeybees to pesticides on a landscape scale requires models of their spatial foraging behaviour. For this purpose, we developed a mechanistic, energetics-based model for a single day of nectar foraging in complex landscape mosaics. Net energetic efficiency determined resource patch choice. In one version of the model a single optimal patch was selected each hour. In another version, recruitment of foragers was simulated and several patches could be exploited simultaneously. Resource availability changed during the day due to depletion and/or intrinsic properties of the resource (anthesis)...
2016: PeerJ
Quinn S McFrederick, Jason M Thomas, John L Neff, Hoang Q Vuong, Kaleigh A Russell, Amanda R Hale, Ulrich G Mueller
Transmission pathways have fundamental influence on microbial symbiont persistence and evolution. For example, the core gut microbiome of honey bees is transmitted socially and via hive surfaces, but some non-core bacteria associated with honey bees are also found on flowers, and these bacteria may therefore be transmitted indirectly between bees via flowers. Here, we test whether multiple flower and wild megachilid bee species share microbes, which would suggest that flowers may act as hubs of microbial transmission...
September 3, 2016: Microbial Ecology
Joyce de Figueiró Santos, Flávio Codeço Coelho, Pierre-Alexandre Bliman
Colony Collapse Disorder (CCD) has become a global problem for beekeepers and for the crops that depend on bee pollination. While many factors are known to increase the risk of colony collapse, the ectoparasitic mite Varroa destructor is considered to be the most serious one. Although this mite is unlikely to cause the collapse of hives itself, it is the vector for many viral diseases which are among the likely causes for Colony Collapse Disorder. The effects of V. destructor infestation differ from one part of the world to another, with greater morbidity and higher colony losses in European honey bees (EHB) in Europe, Asia and North America...
2016: PloS One
Madhavi L Kakumanu, Alison M Reeves, Troy D Anderson, Richard R Rodrigues, Mark A Williams
Honey bees (Apis mellifera) are the primary pollinators of major horticultural crops. Over the last few decades, a substantial decline in honey bees and their colonies have been reported. While a plethora of factors could contribute to the putative decline, pathogens, and pesticides are common concerns that draw attention. In addition to potential direct effects on honey bees, indirect pesticide effects could include alteration of essential gut microbial communities and symbionts that are important to honey bee health (e...
2016: Frontiers in Microbiology
Claudia Dussaubat, Alban Maisonnasse, Didier Crauser, Sylvie Tchamitchian, Marc Bonnet, Marianne Cousin, André Kretzschmar, Jean-Luc Brunet, Yves Le Conte
Honeybee colony survival strongly relies on the queen to overcome worker losses exposed to combined stressors like pesticides and parasites. Queen's capacity to withstand these stressors is however very little known. The effects of the common neonicotinoid pesticide imidacloprid in a chronic and sublethal exposure together with the wide distributed parasite Nosema ceranae have therefore been investigated on queen's physiology and survivorship in laboratory and field conditions. Early physiological changes were observed on queens, particularly the increase of enzyme activities (catalase [CAT] and glutathione-S-transferase [GST] in the heads) related to protective responses to xenobiotics and oxidative stress against pesticide and parasite alone or combined...
2016: Scientific Reports
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