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https://www.readbyqxmd.com/read/29144440/field-monitoring-of-drosophila-suzukii-and-associated-communities-in-south-eastern-france-as-a-pre-requisite-for-classical-biological-control
#1
Laurent Kremmer, Marcel Thaon, Nicolas Borowiec, Jean David, Marylène Poirié, Jean-Luc Gatti, Nicolas Ris
The spotted wing Drosophila, Drosophila suzukii (Ds), became a major economic pest for fruit production since its establishment in Europe and America. Among potential control methods, only classical biological control appears to be a mean of sustainably regulating Ds in both cultivated and natural habitats. In the frame of risk assessment, pre-release surveys were carried out in a restricted but highly heterogeneous area in the south-east of France using traps and deliberate field exposures of Ds and D. melanogaster larvae/pupae...
November 16, 2017: Insects
https://www.readbyqxmd.com/read/29134050/mental-strategies-predict-performance-and-satisfaction-with-performance-among-soccer-players
#2
Magdalena Kruk, Jan Blecharz, Monika Boberska, Karolina Zarychta, Aleksandra Luszczynska
This study investigated the changes in mental strategies across the season and their effects on performance and satisfaction with individual performance. Data were collected three times: at the pre-season at Time 1 (T1; baseline), in the mid-season at Time 2 (T2; two-month follow-up), and at the end-of-season at Time 3 (T3; nine-month follow-up) among male soccer players (N = 97) aged 16-27. Athletes completed the questionnaires assessing the use of nine psychological strategies in competition and the level of satisfaction with individual performance...
October 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29125954/going-deeper-into-phosphorus-adsorbents-for-lake-restoration-combined-effects-of-magnetic-particles-intraspecific-competition-and-habitat-heterogeneity-pressure-on-daphnia-magna
#3
Ana Del Arco, Gema Parra, Inmaculada de Vicente
Aquatic population responses to chemical exposure may be exacerbated by intraspecific competition pressures, being also shaped by habitat heterogeneity. Magnetic particles (MPs) have been recently proposed as promising phosphorus (P) adsorbents for lake restoration. This study focuses on assessing the effects of MPs on the abundance of the crustacean Daphnia magna under different levels of both intraspecific competition pressure and habitat heterogeneity. The experimental design consisted of two experiments (in homogeneous and heterogeneous habitats) done in glass jars with four concentrations of MPs: controls of 0g MPsL(-1), and treatments of 1, 1...
November 7, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29124507/pre-performance-physiological-state-heart-rate-variability-as-a-predictor-of-shooting-performance
#4
E Ortega, C J K Wang
Heart rate variability (HRV) is commonly used in sport science for monitoring the physiology of athletes but not as an indicator of physiological state from a psychological perspective. Since HRV is established to be an indicator of emotional responding, it could be an objective means of quantifying an athlete's subjective physiological state before competition. A total of 61 sport shooters participated in this study, of which 21 were novice shooters, 19 were intermediate shooters, and 21 were advanced level shooters...
November 10, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/29124017/optimization-of-an-in-vitro-assay-methodology-for-competitive-binding-of-thyroidogenic-xenobiotics-with-thyroxine-on-human-transthyretin-and-albumin
#5
Katie L Hill, Timo Hamers, Jorke H Kamstra, William G Willmore, Robert J Letcher
Thyroid hormones (THs) are involved in the regulation of many physiological processes in vertebrates. Competition for TH binding sites on serum transport proteins can interfere with delivery of THs to target tissues, and this is a potential mechanism of action of exogenous thyroidogenic substances. To date, detailed accounts of in vitro methods for competitive binding with THs on TH transport proteins (human or wildlife) are sparse. In the limited number of published studies on in vitro radio-labelled TH-TH transport protein interactions, method descriptions were brief and with insufficient details for successful replication...
2017: MethodsX
https://www.readbyqxmd.com/read/29119651/supramolecular-polymerization-controlled-through-kinetical-trapping
#6
Hao Chen, Zehuan Huang, Han Wu, Jiang-Fei Xu, Xi Zhang
This communication is aimed to introduce a new method of controllable supramolecular polymerization through kinetic trapping. To this end, two bifunctional monomers with cucurbit[7]uril (CB[7]) and adamantane end groups were synthesized. The CB[7]-containing monomer was pre-saturated with a pH-responsive competitive guest for kinetic control. Then, the kinetics of supramolecular polymerization of the two monomers was easily controlled through the modulation of pH. As a result, supramolecular polymerization was kinetically trapped at certain stages and supramolecular polymers with different molecular weights were obtained...
November 9, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29118716/etiology-and-recovery-of-neuromuscular-fatigue-following-competitive-soccer-match-play
#7
Callum G Brownstein, Jack P Dent, Paul Parker, Kirsty M Hicks, Glyn Howatson, Stuart Goodall, Kevin Thomas
Aim: Previous research into the etiology of neuromuscular fatigue following competitive soccer match-play has primarily focused on peripheral perturbations, with limited research assessing central nervous system function in the days post-match. The aim of the present study was to examine the contribution and time-course of recovery of central and peripheral factors toward neuromuscular fatigue following competitive soccer match-play. Methods: Sixteen male semi-professional soccer players completed a 90-min soccer match...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29116001/high-intensity-short-duration-pulling-in-heavy-horses-physiological-effects-of-competition-and-rapid-weight-change
#8
Persephone Greco-Otto, Shannon Massie, Erin Shields, Marie-France Roy, Edmond Pajor, Renaud Léguillette
BACKGROUND: The Heavy Horse Pull is a competition where teams of two horses pull an increasingly heavy sled for a short distance. Similar to human wrestlers, some horses may undergo rapid weight change in order to enter a lower weight category. The objectives were to study the physiological effects of this practice as well as of the pulling competition in draft horses. RESULTS: Fifty horses were divided into light-, middle- and heavyweight categories based on their arrival weights and competed 1-3 days after...
November 7, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29115284/double-edged-effect-of-electric-field-on-the-mechanical-property-of-water-filled-carbon-nanotubes-with-an-application-to-nanoscale-trigger
#9
Hongfei Ye, Yonggang Zheng, Lili Zhou, Junfei Zhao, Hong Wu Zhang, Zhen Chen
Polar water molecules would exhibit extraordinary phenomena under nanoscale confinement. By means of electric field, the water-filled carbon nanotube (CNT) that has been successfully fabricated in laboratory is expected to make distinct responses to the external electricity. Here, we examine the effect of electric field direction on the mechanical property of water-filled CNTs. It is found that the longitudinal electric field enhances but the transversal electric field reduces the elastic modulus and critical buckling stress of water-filled CNTs...
November 8, 2017: Nanotechnology
https://www.readbyqxmd.com/read/29107209/phkv-a-toxin-isolated-from-the-spider-venom-induces-antinociception-by-inhibition-of-cholinesterase-activating-cholinergic-system
#10
Flavia Karine Rigo, Mateus Fortes Rossato, Gabriela Trevisan, Samira Dal-Toé De Prá, Rafael Porto Ineu, Mariane Bernardo Duarte, Célio José de Castro Junior, Juliano Ferreira, Marcus Vinicius Gomez
BACKGROUND AND AIMS: Cholinergic agents cause antinociception by mimicking the release of acetylcholine (ACh) from spinal cholinergic nerves. PhKv is a peptide isolated from the venom of the armed spider Phoneutria nigriventer. It has an antiarrythmogenic activity that involves the enhanced release of acetylcholine. The aim of this study was to investigate whether PhKv had an antinociceptive action in mice. METHODS: Male albino Swiss mice (25-35g) were used in this study...
October 26, 2017: Scandinavian Journal of Pain
https://www.readbyqxmd.com/read/29105001/design-of-projectrun21-a-14-week-prospective-cohort-study-of-the-influence-of-running-experience-and-running-pace-on-running-related-injury-in-half-marathoners
#11
Camma Damsted, Erik Thorlund Parner, Henrik Sørensen, Laurent Malisoux, Rasmus Oestergaard Nielsen
BACKGROUND: Participation in half-marathon has been steeply increasing during the past decade. In line, a vast number of half-marathon running schedules has surfaced. Unfortunately, the injury incidence proportion for half-marathoners has been found to exceed 30% during 1-year follow-up. The majority of running-related injuries are suggested to develop as overuse injuries, which leads to injury if the cumulative training load over one or more training sessions exceeds the runners' load capacity for adaptive tissue repair...
November 6, 2017: Injury Epidemiology
https://www.readbyqxmd.com/read/29104000/ensemble-based-on-static-classifier-selection-for-automated-diagnosis-of-mild-cognitive-impairment
#12
Loris Nanni, Alessandra Lumini, Nicolò Zaffonato
BACKGROUND: Alzheimer's disease (AD) is the most common cause of neurodegenerative dementia in the elderly population. Scientific research is very active in the challenge of designing automated approaches to achieve an early and certain diagnosis. Recently an international competition among AD predictors has been organized: "A Machine learning neuroimaging challenge for automated diagnosis of Mild Cognitive Impairment" (MLNeCh). This competition is based on pre-processed sets of T1-weighted Magnetic Resonance Images (MRI) to be classified in four categories: stable AD, individuals with MCI who converted to AD, individuals with MCI who did not convert to AD and healthy controls...
November 2, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29098599/factors-contributing-to-disparities-in-baseline-neurocognitive-performance-and-concussion-symptom-scores-between-black-and-white-collegiate-athletes
#13
Jessica Wallace, Tracey Covassin, Ryan Moran, Jamie McAllister Deitrick
BACKGROUND: National Collegiate Athletic Association (NCAA) concussion guidelines state that all NCAA athletes must have a concussion baseline test prior to commencing their competitive season. To date, little research has examined potential racial differences on baseline neurocognitive performance among NCAA athletes. The purpose of this study was to investigate differences between Black and White collegiate athletes on baseline neurocognitive performance and self-reported symptoms. METHODS: A total of 597 collegiate athletes (400 White, 197 Black) participated in this study...
November 2, 2017: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/29095563/the-implications-of-spatially-variable-pre-emergence-herbicide-efficacy-for-weed-management
#14
Helen Metcalfe, Alice E Milne, Richard Hull, Alistair J Murdoch, Jonathan Storkey
BACKGROUND: The efficacy of pre-emergence herbicides within fields is spatially variable due to soil heterogeneity. We quantified the effect of soil organic matter on the efficacy of two pre-emergence herbicides; flufenacet and pendimethalin, against A. myosuroides and investigated the implications of variation in organic matter for weed management using a crop-weed competition model. RESULTS: Soil organic matter played a critical role in determining the level of control achieved...
November 2, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29093189/the-metabolic-costs-of-fighting-and-host-exploitation-in-a-seed-drilling-parasitic-wasp
#15
Romain P Boisseau, H Arthur Woods, Marlène Goubault
Oviposition sites may be challenging and energetically costly to access for females in the presence of competitors contesting that resource. Additionally, oviposition sites may be difficult to reach, and penetrating a hard substrate can raise energy costs. In the seed-drilling parasitic wasp Eupelmus vuilleti, females actively fight with conspecific competitors over access to hosts. They are often observed laying eggs on already parasitized hosts (superparasitism) living inside cowpea seeds despite the resulting larval competition...
November 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29093131/exploring-the-role-of-competition-induced-by-non-vaccine-serotypes-for-herd-protection-following-pneumococcal-vaccination
#16
G L Masala, M Lipsitch, C Bottomley, S Flasche
The competitive pressure from non-vaccine serotypes may have helped pneumococcal conjugate vaccines (PCVs) to limit vaccine-type (VT) serotype prevalence. We aimed to investigate if, consequently, the indirect protection of vaccines targeting most pneumococcal serotypes could fall short of the profound effects of current formulations. We compared three previously described pneumococcal models harmonized to simulate 20 serotypes with a combined pre-vaccination prevalence in children younger than 5-years-old of 40%...
November 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29081732/lar-rptp-clustering-is-modulated-by-competitive-binding-between-synaptic-adhesion-partners-and-heparan-sulfate
#17
Seoung Youn Won, Cha Yeon Kim, Doyoun Kim, Jaewon Ko, Ji Won Um, Sung Bae Lee, Matthias Buck, Eunjoon Kim, Won Do Heo, Jie-Oh Lee, Ho Min Kim
The leukocyte common antigen-related receptor protein tyrosine phosphatases (LAR-RPTPs) are cellular receptors of heparan sulfate (HS) and chondroitin sulfate (CS) proteoglycans that direct axonal growth and neuronal regeneration. LAR-RPTPs are also synaptic adhesion molecules that form trans-synaptic adhesion complexes by binding to various postsynaptic adhesion ligands, such as Slit- and Trk-like family of proteins (Slitrks), IL-1 receptor accessory protein-like 1 (IL1RAPL1), interleukin-1 receptor accessory protein (IL-1RAcP) and neurotrophin receptor tyrosine kinase C (TrkC), to regulate synaptogenesis...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29077731/healthy-competition-drives-success-in-results-based-aid-lessons-from-the-salud-mesoam%C3%A3-rica-initiative
#18
Charbel El Bcheraoui, Erin B Palmisano, Emily Dansereau, Alexandra Schaefer, Alexander Woldeab, Maziar Moradi-Lakeh, Benito Salvatierra, Bernardo Hernandez-Prado, Ali H Mokdad
OBJECTIVES: The Salud Mesoamérica Initiative (SMI) is a three-operation strategy, and is a pioneer in the world of results-based aid (RBA) in terms of the success it has achieved in improving health system inputs following its initial operation. This success in meeting pre-defined targets is rare in the world of financial assistance for health. We investigated the influential aspects of SMI that could have contributed to its effectiveness in improving health systems, with the aim of providing international donors, bilateral organizations, philanthropies, and recipient countries with new perspectives that can help increase the effectiveness of future assistance for health, specifically in the arena of RBA...
2017: PloS One
https://www.readbyqxmd.com/read/29077069/abc-assay-method-development-and-application-to-quantify-the-role-of-three-dwv-master-variants-in-overwinter-colony-losses-of-european-honey-bees
#19
Jessica L Kevill, Andrea Highfield, Gideon J Mordecai, Stephen J Martin, Declan C Schroeder
Deformed wing virus (DWV) is one of the most prevalent honey bee viral pathogens in the world. Typical of many RNA viruses, DWV is a quasi-species, which is comprised of a large number of different variants, currently consisting of three master variants: Type A, B, and C. Little is known about the impact of each variant or combinations of variants upon the biology of individual hosts. Therefore, we have developed a new set of master variant-specific DWV primers and a set of standards that allow for the quantification of each of the master variants...
October 27, 2017: Viruses
https://www.readbyqxmd.com/read/29076959/effects-of-pre-competitive-preparation-period-on-the-isokinetic-muscular-characteristics-in-world-class-handball-players
#20
Olivier Maurelli, Pierre Louis Bernard, Romain Dubois, Said Ahmaidi, Jacques Prioux
The aim of this study was to describe the effects of eight weeks of pre-competitive period preparation (Pc2P) on the isokinetic muscular characteristics in world-class handball players. Nineteen male professional players (age: 26.6 ± 5.4 years) participated in the study. Two bilateral isokinetic tests of knee joint flexors (H; Hamstring) and extensors (Q; Quadriceps) were performed before and after Pc2P to determine the peak torque (PT), the mean power (MP) and the ratios (agonist/antagonist, dominant/non-dominant and combined)...
October 20, 2017: Journal of Strength and Conditioning Research
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