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https://www.readbyqxmd.com/read/28454037/agricultural-expansion-as-risk-to-endangered-wildlife-pesticide-exposure-in-wild-chimpanzees-and-baboons-displaying-facial-dysplasia
#1
Sabrina Krief, Philippe Berny, Francis Gumisiriza, Régine Gross, Barbara Demeneix, Jean Baptiste Fini, Colin A Chapman, Lauren J Chapman, Andrew Seguya, John Wasswa
Prenatal exposure to environmental endocrine disruptors can affect development and induce irreversible abnormalities in both humans and wildlife. The northern part of Kibale National Park, a mid-altitude rainforest in western Uganda, is largely surrounded by industrial tea plantations and wildlife using this area (Sebitoli) must cope with proximity to human populations and their activities. The chimpanzees and baboons in this area raid crops (primarily maize) in neighboring gardens. Sixteen young individuals of the 66 chimpanzees monitored (25%) exhibit abnormalities including reduced nostrils, cleft lip, limb deformities, reproductive problems and hypopigmentation...
April 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28447782/does-waterborne-exposure-explain-effects-caused-by-neonicotinoid-contaminated-plant-material-in-aquatic-systems
#2
Dominic Englert, Jochen Peter Zubrod, Moritz Link, Saskia Mertins, Ralf Schulz, Mirco Bundschuh
Neonicotinoids are increasingly applied on trees as protection measure against insect pests. Consequently, neonicotinoids are inevitably transferred into aquatic environments either via spray drift, surface runoff or - due to neonicotinoids' systemic nature - via senescent leaves. There particularly leaf-shredding invertebrates may be exposed to neonicotinoids through both the water phase and the consumption of contaminated leaves. In 7-d-bioassays (n=30) we examined ecotoxicological differences between these two exposure scenarios for an amphipod and an insect nymph with their feeding rate as the response variable...
April 27, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28446145/genome-wide-analysis-of-atp-binding-cassette-abc-transporters-in-the-sweetpotato-whitefly-bemisia-tabaci
#3
Lixia Tian, Tianxue Song, Rongjun He, Yang Zeng, Wen Xie, Qingjun Wu, Shaoli Wang, Xuguo Zhou, Youjun Zhang
BACKGROUND: ABC transporter superfamily is one of the largest and ubiquitous groups of proteins. Because of their role in detoxification, insect ABC transporters have gained more attention in recent years. In this study, we annotated ABC transporters from a newly sequenced sweetpotato whitefly genome. Bemisia tabaci Q biotype is an emerging global invasive species that has caused extensive damages to field crops as well as ornamental plants. RESULTS: A total of 55 ABC transporters containing all eight described subfamilies (A to H) were identified in the B...
April 26, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28444217/direct-and-indirect-effects-of-pesticides-on-the-insidious-flower-bug-hemiptera-anthocoridae-under-laboratory-conditions
#4
Nathan J Herrick, Raymond A Cloyd
Greenhouse producers are interested in integrating natural enemies along with pesticides to suppress western flower thrips, Frankliniella occidentalis (Pergande), populations. The insidious flower bug, Orius insidiosus (Say), is a commercially available natural enemy of western flower thrips. We conducted a series of laboratory experiments to determine the direct and indirect effects of 28 pesticides (insecticides, miticides, and fungicides), 4 pesticide mixtures, and 4 surfactants (36 total treatments plus a water control) on the adult O...
April 21, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28442004/multi-response-optimization-of-process-parameters-for-imidacloprid-removal-by-reverse-osmosis-using-taguchi-design
#5
Nevim Genç, Esra Can Doğan, Ali Oğuzhan Narcı, Emine Bican
  In this study, a multi-response optimization method using Taguchi's robust design approach is proposed for imidacloprid removal by reverse osmosis. Tests were conducted with different membrane type (BW30, LFC-3, CPA-3), transmembrane pressure (TMP = 20, 25, 30 bar), volume reduction factor (VRF = 2, 3, 4), and pH (3, 7, 11). Quality and quantity of permeate are optimized with the multi-response characteristics of the total dissolved solid (TDS), conductivity, imidacloprid, and total organic carbon (TOC) rejection ratios and flux of permeate...
May 1, 2017: Water Environment Research: a Research Publication of the Water Environment Federation
https://www.readbyqxmd.com/read/28433639/optimization-of-atrazine-and-imidacloprid-removal-from-water-using-biochars-designing-single-or-multi-staged-batch-adsorption-systems
#6
Abhishek Mandal, Neera Singh
BACKGROUND: Contamination of surface and ground water by pesticides from agricultural runoff and industrial discharge is one of the main causes of aqueous contaminations world over. Biochar, agricultural waste derived highly aromatic substance produced after pyrolysis and carbonification of biomass have exhibited good adsorption capacity for pesticides and can be used to develop on-site bio-purification systems for organic contaminant removal from polluted waters. However, high amounts of adsorbent required in single stage-batch sorption plant increases the cost of water treatment; therefore, multistage plant systems were investigated...
April 5, 2017: International Journal of Hygiene and Environmental Health
https://www.readbyqxmd.com/read/28431984/thyroid-disrupting-pesticides-impair-the-hypothalamic-pituitary-testicular-axis-of-a-wildlife-bird-amandava-amandava
#7
Banalata Mohanty, Surya Prakash Pandey, Kazuyoshi Tsutsui
The effect of two thyroid disrupting pesticides (TDPs) mancozeb (MCZ) and imidacloprid (IMI) on the hypothalamic-pituitary-gonadal/testicular (HPG) axis of a seasonally breeding bird, Amandava amandava has been evaluated. Male birds (n=8/group) were exposed to each of the pesticide (0.25% LD50 of respective pesticide) as well as to their two equimixture doses (0.25% of LD50 of each and 0.5% LD50 of each) through food for 30d during pre-breeding stage of the reproductive cycle. Reduction in weight, volume and other histopathological features revealed testicular regression...
April 19, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28428563/a-sublethal-dose-of-a-neonicotinoid-insecticide-disrupts-visual-processing-and-collision-avoidance-behaviour-in-locusta-migratoria
#8
Rachel H Parkinson, Jacelyn M Little, John R Gray
Neonicotinoids are known to affect insect navigation and vision, however the mechanisms of these effects are not fully understood. A visual motion sensitive neuron in the locust, the Descending Contralateral Movement Detector (DCMD), integrates visual information and is involved in eliciting escape behaviours. The DCMD receives coded input from the compound eyes and monosynaptically excites motorneurons involved in flight and jumping. We show that imidacloprid (IMD) impairs neural responses to visual stimuli at sublethal concentrations, and these effects are sustained two and twenty-four hours after treatment...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28406073/rapid-multi-residue-determination-of-pesticides-in-livestock-muscle-and-liver-tissue-via-modified-quechers-sample-preparation-and-lc-ms-ms
#9
K Hamamoto, K Iwatsuki, R Akama, R Koike
Many multi-residue methods for the determination of pesticides in vegetables and fruits have been reported to date. However, few such methods have been employed to investigate pesticide residues in animal tissue. In this study, an LC/MS/MS multi-residue method coupled with modified QuEChERS extraction was developed and validated for the investigation of eight pesticide residues [prallethrin, resmethrin (RMT), imidacloprid, diflubenzuron, cyromazine (CYR), etofenprox, dinotefuran (DNT), and phthalthrin]. This method involves initial extraction in a water/acetone system, the addition of salts and a subsequent extraction/partitioning step, and finally, a clean-up step utilising dispersive SPE...
April 13, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28401732/responses-of-neonicotinoid-resistant-and-susceptible-frankliniella-fusca-life-stages-to-multiple-insecticide-groups-in-cotton
#10
Anders S Huseth, Damon A D'Ambrosio, George G Kennedy
BACKGROUND: Detection of neonicotinoid resistance in populations of tobacco thrips, Frankliniella fusca Hinds, throughout the Southeastern US has motivated an examination of alternative insecticides to control problematic infestations on seedling cotton. The objective of this study was to refine understanding of stage-specific mortality and reduced oviposition of several common insecticides (acephate, abamectin, cyantraniliprole, spinetoram, imidacloprid, imidacloprid + thiodicarb, thiamethoxam) on neonicotinoid-resistant and susceptible F...
April 12, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28395750/efficacy-and-safety-of-a-new-spot-on-formulation-of-selamectin-plus-sarolaner-in-the-treatment-of-naturally-occurring-flea-and-tick-infestations-in-cats-presented-as-veterinary-patients-in-europe
#11
RANDOMIZED CONTROLLED TRIAL
Thomas Geurden, Csilla Becskei, Robert Farkas, Dan Lin, Douglas Rugg
Two randomised, blinded, multi-centre field studies were conducted in Europe (Germany, Italy, France, Hungary) to demonstrate the efficacy and safety of three monthly applications of a new spot-on formulation of selamectin plus sarolaner (Stronghold(®) Plus, Zoetis) against natural flea or tick infestations in cats presented as veterinary patients. The spot-on formulation was administered at the commercial dose range of 6.0-12.0mg selamectin and 1.0-2.0mg sarolaner per kg bodyweight. In the flea study, the improvement in clinical signs associated with flea allergy dermatitis (FAD) was also monitored...
April 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28385489/developmental-neurotoxicity-of-different-pesticides-in-pc-12-cells-in-vitro
#12
Verena Christen, Manuel Rusconi, Pierre Crettaz, Karl Fent
The detection of developmental neurotoxicity (DNT) of chemicals has high relevance for protection of human health. However, DNT of many pesticides is only little known. Furthermore, validated in vitro systems for assessment of DNT are not well established. Here we employed the rat phaeochromocytoma cell line PC-12 to evaluate DNT of 18 frequently used pesticides of different classes, including neonicotinoids, pyrethroids, organophosphates, organochlorines, as well as quaternary ammonium compounds, the organic compound used in pesticides, piperonyl butoxide, as well as the insect repellent diethyltoluamide (DEET)...
April 3, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28376431/validation-of-a-quechers-method-for-analysis-of-neonicotinoids-in-small-volumes-of-blood-and-assessment-of-exposure-in-eurasian-eagle-owl-bubo-bubo-nestlings
#13
A Taliansky-Chamudis, P Gómez-Ramírez, M León-Ortega, A J García-Fernández
Neonicotinoid pesticides have gained great interest in the last years both for agricultural and domestic use. Since the information on their environmental distribution or the effects derived from exposure to ecosystems and biota is scarce, new analytical techniques are being developed for monitoring studies. In this sense, two extraction techniques based on QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) methodology to detect the neonicotinoids authorised in Spain (acetamiprid, clothianidin, dinotefuran, imidacloprid, thiacloprid, nitenpyram and thiamethoxam) were adapted and compared: a) using acetate buffer (AB); and b) using citrate buffer (CB)...
April 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28375120/effect-of-subleathal-concentrtion-of-imidacloprid-on-the-histology-of-heart-liver-and-kidney-in-labeo-rohitr
#14
Shazia Qadir, Furhan Iqbal
Randomly selected 500 fingerlings of Labeo rohita were collected from fish seed hatchery Muzaffar Garh. Six groups of 40 fish each were exposed to subleathal concentration of Imidacloprid (120 mg L(-1)) under short-term (2, 4 and 8 days) and long term (16, 32 and 64 days) conditions to assess the effect of this most extensively used insecticide on the heart, liver and kidney of economically most important fresh water fish, L. rohita, in Pakistan. Separate control groups were used for each Imidacloprid treatment...
November 2016: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28367067/early-life-chemical-exposures-and-risk-of-metabolic-syndrome
#15
REVIEW
Nicole E De Long, Alison C Holloway
The global prevalence of obesity has been increasing at a staggering pace, with few indications of any decline, and is now one of the major public health challenges worldwide. While obesity and metabolic syndrome (MetS) have historically thought to be largely driven by increased caloric intake and lack of exercise, this is insufficient to account for the observed changes in disease trends. There is now increasing evidence to suggest that exposure to synthetic chemicals in our environment may also play a key role in the etiology and pathophysiology of metabolic diseases...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28366004/physicochemical-evidence-on-sublethal-neonicotinoid-imidacloprid-interacting-with-an-odorant-binding-protein-from-the-tea-geometrid-moth-ectropis-obliqua
#16
Hongliang Li, Lei Zhao, Xiaobin Fu, Xinmi Song, Fan Wu, Mingzhu Tang, Hongchun Cui, Jizhong Yu
Nowadays the excessive usage of neonicotinoid insecticides always results in residues in Chinese tea fields. It is not clear whether the insecticide residue at the sublethal level influences the physiological processes of tea pests. Here, we provide evidence of interaction between the neonicotinoid imidacloprid and a general odorant-binding protein, EoblGOBP2, from the tea geometrid moth, Ectropis obliqua. The interacting process was demonstrated through multiple fluorescence spectra, UV absorption spectra, circular dichroism (CD) spectra, molecular docking, etc...
April 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28364194/carbon-treatment-as-a-method-to-remove-imidacloprid-from-agriculture-runoff
#17
Jennifer P Voorhees, Brian S Anderson, Bryn M Phillips, Ron S Tjeerdema
Use of neonicotinoid pesticides is increasing worldwide and there is growing evidence of surface water contamination from this class of insecticide. Due to their high solubility, traditional mitigation practices may be less effective at reducing neonicotinoid concentrations in agricultural runoff. In the current study, laboratory experiments were conducted to determine if granulated activated carbon (GAC) reduces concentrations of the neonicotinoid imidacloprid in water under simulated flow conditions. Imidacloprid was pumped through columns packed with GAC using flow rates scaled to mimic previously reported field studies...
March 31, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28355267/food-consumption-and-food-exchange-of-caged-honey-bees-using-a-radioactive-labelled-sugar-solution
#18
Robert Brodschneider, Anika Libor, Vera Kupelwieser, Karl Crailsheim
We measured the distribution of sugar solution within groups of caged honey bees (Apis mellifera) under standard in vitro laboratory conditions using 14C polyethylene glycol as a radioactive marker to analyze ingestion by individual bees after group feeding. We studied the impact of different experimental setups by varying the number of bees, age of bees, origin of bees, duration of experiment, the amount of available diet, and the influence of the neurotoxic pesticide imidacloprid in the diet on the feeding and food sharing behavior (trophallaxis)...
2017: PloS One
https://www.readbyqxmd.com/read/28345791/trichoscopic-diagnosis-of-cutaneous-pelodera-strongyloides-infestation-in-a-dog
#19
Rareş G M Căpitan, Chiara Noli
BACKGROUND: Pelodera strongyloides infestation has rarely been reported in dogs. It is a saprophytic free-living nematode, found in moist decaying organic matter, whose L3 larval stages occasionally can invade the skin of dogs and humans. Larvae penetrate the follicular infundibula causing an erythematous and pruritic dermatitis. The disease is usually diagnosed by deep skin scraping or histopathology, with large numbers of parasites readily identified in hair follicles. CASE REPORT: Pelodera strongyloides dermatitis was diagnosed in a six-year-old mixed breed dog presenting with alopecia, erythema and severe pruritus on the ventrum and limbs...
March 27, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28342998/field-evaluation-of-cucurbit-yellow-stunting-disorder-virus-transmission-by-bemisia-tabaci
#20
S J Castle, J P Palumbo, P Merten
Cucurbit yellow stunting disorder virus (CYSDV) is a whitefly-transmitted Crinivirus (Closteroviridae) that impacts melon production in many parts of the world including the USA. It has been responsible for melon crop loss in the southwestern U.S. since 2006 when it was first identified. Control strategies have revolved mainly around chemical control, but research to identify suitable products and approaches to implementing them has lagged. The current study investigated the performance of four systemic insecticides in the field while concurrently tracking CYSDV disease progression after controlled and natural whitefly inoculation of young melon plants...
March 22, 2017: Virus Research
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