journal
MENU ▼
Read by QxMD icon Read
search

Pest Management Science

journal
https://www.readbyqxmd.com/read/28321982/susceptibility-of-insecticide-resistant-bed-bugs-cimex-lectularius-to-infection-by-fungal-biopesticide
#1
Alexis M Barbarin, Giovani S Bellicanta, Jason A Osborne, Coby Schal, Nina E Jenkins
BACKGROUND: Bed bugs are a public health concern, and their incidence is increasing worldwide. Bed bug infestations are notoriously difficult to eradicate, further exacerbated by widespread resistance to pyrethroid and neonicotinoid insecticides. This study evaluated the efficacy of the newly developed fungal biopesticide, Aprehend™, containing Beauveria bassiana, against insecticide-resistant bed bugs. RESULTS: Overall mortality for the Harold Harlan (insecticide-susceptible) strain was high (98-100%) following exposure to Aprehend™ or Suspend SC (deltamethrin)...
March 20, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28321974/a-systematic-review-of-the-literature-reveals-trends-and-gaps-in-integrated-pest-management-studies-conducted-in-the-usa
#2
Stephen L Young
Integrated pest management (IPM) is a broad-based approach for addressing pests that negatively affect human and environmental health and economic profitability. Weeds, insects, and disease-causing pathogens (diseases) are the pests most often associated with IPM. A systematic review, widely used in other scientific disciplines, was employed to determine the most commonly studied IPM topics and summarize the reasons for these trends and the gaps. In a field synopsis of the literature, 1,679 relevant published papers were identified and categorized into one of the following five broad areas: IPM and organic (organic), climate change and pests (climate), rural and urban IPM (rural and urban), next generation education (education), and advanced production systems (technology)...
March 20, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28321972/vectorization-of-agrochemicals-via-amino-acid-carriers-influence-of-the-spacer-arm-structure-on-the-phloem-mobility-of-phenylpyrrole-conjugates-in-the-ricinus-system
#3
Sophie Marhadour, Hanxiang Wu, Wen Yang, Cécile Marivingt-Mounir, Jean-Louis Bonnemain, Jean-François Chollet
BACKGROUND: Excessive agrochemical use causes significant threats to environmental safety and human health. Reducing pesticide use without reducing yield is necessary for sustainable agriculture. Therefore we developed a vectorization strategy to enhance agrochemical delivery through plant amino acid carriers. RESULTS: In addition to a fenpiclonil conjugate recently described, three new amino acid conjugates were synthesized by coupling fenpiclonil to an L-α-amino acid...
March 20, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28317250/epsps-gene-amplification-conferring-resistance-to-glyphosate-in-windmill-grass-chloris-truncata-in-australia
#4
The D Ngo, Jenna M Malone, Peter Boutsalis, Gurjeet Gill, Christopher Preston
BACKGROUND: Five glyphosate resistant populations of Chloris truncata originally collected from New South Wales were compared to one susceptible (S) population from South Australia, Australia to confirm glyphosate resistance and elucidate possible mechanisms of resistance. RESULTS: Based on the amounts of glyphosate required to kill 50% of treated plants (LD50 ), glyphosate resistance (GR) was confirmed in five populations of C. truncata (A536, A528, T27, A534 and A535...
March 20, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28299894/insights-on-food-webs-associated-with-the-south-american-tomato-pinworm
#5
Mario Naselli, Antonio Biondi, Giovanna Tropea Garzia, Nicolas Desneux, Agatino Russo, Gaetano Siscaro, Lucia Zappalà
BACKGROUND: Complexity of both natural and managed ecosystems involves various forms of interaction among organisms. Two or more species that exploit the same resource can engage in competitive behaviors, usually referred to as intra-guild interactions. These can be direct, i.e. one species feeds directly upon the competitor (intra-guild predation) or indirect, e.g. when the dominant organism competes for a food source which another organism is feeding on (kleptoparasitism). We investigated the potential for such interactions in a biological model composed by the South American tomato pinworm, Tuta absoluta, and three of its newly associated natural enemies: the zoophytophagous predator Nesidiocoris tenuis, and two idiobiont ectoparasitoids Bracon nigricans, and Necremnus tutae...
March 16, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28296187/lethal-and-sublethal-effects-of-pesticides-in-the-management-of-polyphagotarsonemus-latus-banks-acari-tarsonemidae-on-capsicum-annuum-l
#6
Mariana O Breda, José V Oliveira, Alberto B Esteves Filho, Douglas R S Barbosa, Andrezo A Santos
BACKGROUND: The evaluation of lethal and sublethal effects are of great importance for a complete assessment of the total impact of chemical compounds upon pest populations and the development of management strategies. At this study, the lethal and sublethal effects of different synthetic and botanical products were evaluated upon the broad mite, Polyphagotarsonemus latus (Banks), a major pest of Capsicum annuum L and other crops. RESULTS: Abamectin presented the highest lethal effect to P...
March 15, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28296068/assessment-of-insecticide-risk-to-human-health-in-groundwater-in-northern-china-by-using-the-china-pearl-model
#7
Yue Geng, Jing Ma, Ruize Zhou, Ran Jia, Chongjiu Li, Xiaodong Ma
BACKGROUND: Insecticides are extensively used in China and may leach to groundwater, which is used as a source of drinking water in Northern China. However, the risk of insecticide leaching to groundwater and the subsequent risk to human health caused by the consumption of insecticide-contaminated drinking water remain unclear. RESULTS: A total of 336 predicted environmental concentrations (PECs) were simulated for 32 commonly-used insecticides, and 171 PECs were calculated for 20 metabolites in 6 agricultural dry-land scenario locations of Northern China with 8 target crops...
March 15, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28296046/imidacloprid-is-degraded-by-cyp353d1v2-a-cytochrome-p450-over-expressed-in-resistant-strain-of-laodelphax-striatellus
#8
Mohammed Esmail Abdalla Elzaki, Mohammad Asaduzzaman Miah, Min Wu, Haomiao Zhang, Jian Pu, Ling Jiang, Zhaojun Han
BACKGROUND: Cytochrome P450s are associated with metabolizing of a wide range of compounds including insecticides. CYP353D1v2 has been found over-expressed in the imidacloprid-resistant strain of Laodelphax striatellus. Thus, this study was conducted to express CYP353D1v2 in Sf9 cell as a recombinant protein, to assess its ability in metabolizing imidacloprid. RESULTS: Western blot and carbon monoxide difference spectra analysis indicated that the intact CYP353D1v2 protein has been successfully expressed in insect cell Sf9...
March 10, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28276187/glyphosate-resistance-in-ambrosia-trifida-ii-rapid-response-physiology-and-non-target-site-resistance
#9
Marcelo L Moretti, Christopher R Van Horn, Renae Robertson, Kabelo Segobye, Stephen C Weller, Bryan G Young, William G Johnson, R Douglas Sammons, Dafu Wang, Xia Ge, André d'Avignon, Todd A Gaines, Philip Westra, Amanda C Green, Taylor Jeffery, Mackenzie A Lespérance, François J Tardif, Peter H Sikkema, J Christopher Hall, Michael D McLean, Mark B Lawton, Burkhard Schulz
BACKGROUND: The glyphosate-resistant rapid response (GR RR) resistance mechanism in Ambrosia trifida is not due to target site resistance (TSR) mechanisms. This study explores the physiology of the rapid response and the possibility of reduced translocation and vacuolar sequestration as non-target-site resistance (NTSR) mechanisms. RESULTS: GR RR leaf discs accumulated hydrogen peroxide within minutes of glyphosate exposure, but only in mature leaf tissue. The rapid response required energy either as light or exogenous sucrose...
March 8, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28276138/analysis-of-oilseed-rape-stem-weevils-chemical-control-using-damage-rating-scale
#10
Željko Milovac, Miroslav Zorić, Filip Franeta, Sreten Terzić, Olivera Petrović Obradović, Ana Marjanović Jeromela
BACKGROUND: Rape stem weevil (Ceutorhynchus napi Gyll.) and cabbage stem weevil (C. pallidactylus Marsh.) can cause significant yield losses to oilseed rape (Brassica napus L.), and chemical control is often needed to protect crops from these pests. The efficacy of six insecticides, chlorpyriphos + cypermethrin, bifenthrin, alpha-cypermethrin, pirimiphos-methyl, thiacloprid and tau-fluvalinate, was tested in a four year field trial. Besides the standard efficacy analysis expressed through the number of larvae per stem, a damage rating scale was introduced and modelled using a regression model for ordinal categorical data...
March 8, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28266154/enhanced-atrazine-degradation-is-widespread-across-the-united-states
#11
Thomas C Mueller, Ethan T Parker, Larry Steckel, Sharon A Clay, Micheal D K Owen, William S Curran, Randall Currie, Robert Scott, Christy Sprague, Daniel O Stephenson, Donnie K Miller, Eric P Prostko, W James Grichar, James Martin, L Jason Kruz, Kevin Bradley, Mark L Bernards, Peter Dotray, Stevan Knezevic, Vince Davis, Robert Klein
BACKGROUND: Atrazine (ATZ) has been a key herbicide for annual weed control in corn, with both a soil and postemergence vegetation application period. Although enhanced ATZ degradation in soil with a history of ATZ use has been reported, the extent and rate of degradation in the U.S. Corn Belt is uncertain. We show that enhanced ATZ degradation exists across much of the country. RESULTS: Soils from 15 of 16 surveyed states had enhanced ATZ degradation. The average ATZ half-life was only 2...
March 7, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28266132/glyphosate-resistance-in-ambrosia-trifida-i-novel-rapid-cell-death-response-to-glyphosate
#12
Christopher R Van Horn, Marcelo L Moretti, Renae R Robertson, Kabelo Segobye, Stephen C Weller, Bryan G Young, William G Johnson, Burkhard Schulz, Amanda C Green, Taylor Jeffery, Mackenzie A Lespérance, François J Tardif, Peter H Sikkema, J Christopher Hall, Michael D McLean, Mark B Lawton, R Douglas Sammons, Dafu Wang, Philip Westra, Todd A Gaines
BACKGROUND: Glyphosate-resistant (GR) Ambrosia trifida is now present in the Midwestern US and southwestern, Ontario, Canada. Two distinct GR phenotypes are known, including a rapid response (GR RR) phenotype that exhibits cell death within hours after treatment, and a non-rapid response (GR NRR) phenotype. The mechanisms of resistance in both GR RR and GR NRR remain unknown. Here we present a description of the RR phenotype and investigation of target-site mechanisms on multiple A. trifida accessions...
March 7, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28266104/larvicidal-activity-of-synthetic-tropane-alkaloids-against-ascia-monuste-orseis-lepidoptera-pieridae
#13
Simone Z Mairink, Luiz Ca Barbosa, Eduardo Vv Varejão, Elizeu S Farias, Márcio Lm Santos, Marcelo C Picanço
BACKGROUND: Tropane alkaloids are well known to play a role in plant defense. By blocking acetylcholine receptors, they exert insecticidal and deterrent effects against herbivore insects. Carbamates are an important class of chemical insecticides that also inhibit acetyl cholinesterase. The objective of this work was to synthesize a series of tropane alkaloids bearing a carbamate group, and to evaluate their effects against the pest Ascia monuste. The effects of the most active compounds were evaluated on the A...
March 6, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28261957/concentration-dependent-effects-of-acute-and-chronic-neonicotinoid-exposure-on-the-behaviour-and-development-of-the-nematode-caenorhabditis-elegans
#14
Monika M Kudelska, Lindy Holden-Dye, Vincent O'Connor, Declan A Doyle
BACKGROUND: Neonicotinoid insecticides are under review due to emerging toxicity to non-target species. Interest has focused on biological pollinators whilst their effects on other organisms that are key contributors to the ecosystem remain largely unknown. To advance this we have tested the effects of representatives of three major classes of neonicotinoids, thiacloprid, clothianidin and nitenpyram on the free-living nematode Caenorhabditis elegans (C. elegans), as a representative of the Nematoda, an ecologically important phylum contributing to biomass...
March 6, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28247562/design-synthesis-and-insecticidal-activity-of-novel-hydrocarbylidene-nitrohydrazinecarboximidamides
#15
Yong Xu, Dong-Yan Yang, Xiang-Gao Zou, Chang-Hui Rui, Zi-Yuan Zhou, Yong-Qiang Ma, Zhao-Hai Qin
BACKGROUND: Neonicotinoids, as one of the most important pesticides in recent decades, have played pivotal roles in controlling of agricultural pests. However, the toxicity to some environmental beneficial insects has been alerting people. The development of novel insecticides safer to these insects is increasingly urgent. RESULTS: A novel series of hydrocarbylidene nitrohydrazinecarboximidamides were designed and synthesized starting from S-methylisothiourea sulfate...
March 1, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28247541/sea-lice-infestation-levels-decrease-with-deeper-snorkel-barriers-in-atlantic-salmon-sea-cages
#16
Frode Oppedal, Francisca Samsing, Tim Dempster, Daniel W Wright, Samantha Bui, Lars H Stien
BACKGROUND: Salmon lice (Lepeophtheirus salmonis) are the most important parasite of farmed salmon. Infective larvae position themselves in the upper part of the water column to increase encounter probabilities with potential hosts. Previous studies have shown that a 'snorkel' sea-cage technology protects salmon from infection in surface waters. We tested whether deep snorkels would more effectively reduce lice infestation than shallow snorkels and still uphold adequate conditions for the fish...
March 1, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28247468/discovery-and-quantitative-structure-activity-relationship-study-of-lepidopteran-hmg-coa-reductase-inhibitors-as-selective-insecticides
#17
Yang-Yang Zang, Yuan-Mei Li, Yue Yin, Shan-Shan Chen, Zhen-Peng Kai
BACKGROUND: In the previous study, we have demonstrated that insect 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR) can be a potential selective insecticide target. Three series of inhibitors were designed based on the difference of HMGR structures from Homo sapiens and Manduca sexta with the aim for discovering potent selective insecticide candidate. RESULTS: Bioassay in vitro showed that gem-difluoromethylenated statin analogs have potent effects on JH biosynthesis of M...
March 1, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28233456/comparing-different-techniques-to-assess-the-risk-for-dust-drift-from-pesticide-coated-seeds
#18
Dieter Foque, Bert Beck, Wouter Devarrewaere, Pieter Verboven, David Nuyttens
BACKGROUND: Although considered as a save pesticide application method, treated seeds can pose environmental risks when abraded pesticide-laden seed particles are expelled during sowing. This dust drift risk is clearly linked with the seed coating quality. Seed coating quality is traditionally assessed with Heubach dustmeters and guidelines are established in terms of 'Heubach value'. This technique may, however, not take all drift sensitive particles in to account. In this study, results of the Heubach test are compared to two alternative setups: mechanical sieving and individual sowing element...
February 24, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28233443/novel-nanoscale-pheromone-dispenser-for-more-accurate-evaluation-of-grapholita-molesta-lepidoptera-tortricidae-attract-and-kill-strategies-in-laboratory
#19
Bruna Czarnobai De Jorge, Ricardo Bisotto-de-Oliveira, Cláudio Nunes Pereira, Josué Sant'Ana
BACKGROUND: Nanotechnology has recentlyallowed the production of formulations for controlled release of active ingredients. In the present study, the electrospinning technique was used for nanoscale dispensers production to attract-and-kill strategies. Non-woven nanofibers containing insecticide (cypermethrin) and (E)-8, (Z)-8-dodecenyl acetate and (Z)-8-dodecanol (0.87 mg.L(-1) ), the main components of Grapholita molesta (Lepidoptera:Tortricidae) (Busck) pheromone were evaluated in laboratory experiments...
February 24, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28218818/synthesis-and-in-vivo-fungicidal-activity-of-some-new-quinoline-derivatives-against-rice-blast
#20
Xing-Hai Liu, Yue-Ming Fang, Feng Xie, Rui-Rui Zhang, Zhong-Hua Shen, Chen-Xia Tan, Jian-Quan Weng, Tian-Ming Xu, Hong-Ying Huang
BACKGROUND: Quinoline derivatives possess excellent fungicidal activity against rice blast, but quinoline deruvatuves have not been thoroughly explored as fungicides. In the process of designing new fungicides, the 1,1,1,2,3,3,3-heptafluoropropan-2-yl group was introduced in order to find new structure quinoline derivatives. RESULTS: Seventeen new quinoline derivatives containing 1,1,1,2,3,3,3-heptafluoropropan-2-yl moiety were designed and synthesized. In vivo fungicidal activities of these compounds were tested against rice blast...
February 20, 2017: Pest Management Science
journal
journal
34832
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"