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Pest Management Science

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https://www.readbyqxmd.com/read/28422455/a-decade-of-a-leafminer-invasion-in-china-lessons-learned
#1
REVIEW
Yulin Gao, Stuart Reitz, Zhenlong Xing, Scott Ferguson, Zhongren Lei
Liriomyza trifolii (Burgess) is a highly invasive species that has become established in agricultural and ornamental crops throughout the world. L. trifolii was first recorded in China in 2005 in Guangdong Province. Subsequently, its known distribution in China has rapidly expanded to another 11 provinces (Zhejiang, Jiangsu, Shanghai, Fujian, Guangxi, Shandong, Hainan, Hebei, Henan, Hubei and Anhui), where it is currently causing considerable damage and economic losses. Experimental research and field surveys have contributed to our understanding of the ecology of L...
April 19, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28401732/responses-of-neonicotinoid-resistant-and-susceptible-frankliniella-fusca-life-stages-to-multiple-insecticide-groups-in-cotton
#2
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/28387028/induced-plant-defences-in-biological-control-of-arthropod-pests-a-double-edged-sword
#3
REVIEW
Maria L Pappas, Colette Broekgaarden, George D Broufas, Merijn R Kant, Gerben J Messelink, Anke Steppuhn, Felix Wäckers, Nicole M van Dam
Biological control is an important ecosystem service delivered by natural enemies. Together with breeding for plant defence, it constitutes one of the most promising alternatives to pesticides for controlling herbivores in sustainable crop production. Especially induced plant defences may be promising targets in plant breeding for resistance against arthropod pests. Because they are activated upon herbivore damage, costs only incur when defence is needed. Moreover, they can be more specific than constitutive defences...
April 7, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28382786/sublethal-effects-of-chlorantraniliprole-on-juvenile-hormone-levels-and-mrna-expression-of-jhamt-and-fpps-genes-in-the-rice-stem-borer-chilo-suppressalis
#4
Beibei Xu, Kun Qian, Nan Zhang, Lijun Miao, Jingxuan Cai, Mingxing Lu, Yuzhou Du, Jianjun Wang
BACKGROUND: Juvenile hormone (JH) regulates development and reproduction of insects. The sublethal effects of chlorantraniliprole on JH levels and mRNA expression of JH acid methyltransferase gene (CsJHAMT) and farnesyl diphosphate synthase genes (CsFPPS1 and CsFPPS2 ) in Chilo suppressalis (Walker) were investigated. RESULTS: Exposure of sublethal concentrations of chlorantraniliprole (LC10 and LC30 ) to the third instar larvae of C. suppressalis significantly increased the JH levels in all developmental stages investigated including larvae 72 h after treatment, the first, third and fifth day of female pupae, as well as newly emerged, 12-h-old and 24-h-old female adults...
April 5, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28382747/mass-trapping-is-as-effective-as-ground-bait-sprays-for-the-control-of-anastrepha-diptera-tephritidae-fruit-flies-in-mango-orchards
#5
Jorge Villalobos, Salvador Flores, Pablo Liedo, Edi A Malo
BACKGROUND: Anastrepha fruit flies are considered one of the main phytosanitary problems for the fresh fruit industry in the USA, Caribbean islands and Latin America. Since 1994, the Mexican government implemented the National Fruit Fly Program using an area-wide integrated pest management approach. In this paper, we evaluated the effectiveness of mass trapping and compared it with ground GF-120 spraying against Anastrepha obliqua and Anastrepha ludens populations in mango cv Ataulfo orchards...
April 5, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28374565/three-years-of-banning-neonicotinoid-insecticides-based-on-sub-lethal-effects-can-we-expect-to-see-effects-on-bees
#6
Tjeerd Blacquière, Jozef J M van der Steen
The 2013 EU ban of three neonicotinoids used in seed coating of pollinator attractive crops was put in place because of concern about declining wild pollinator populations and numbers of honeybee colonies. It was also concluded that there is an urgent need of good field data to fill knowledge gaps. In the meantime such data have been generated. Based on recent literature we question the existence of recent pollinator declines and their possible link with the use of neonicotinoids. Because of temporal non-coincidence we conclude that declines of wild pollinators and of honeybees are not likely caused by neonicotinoids...
April 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28374545/identification-of-walnut-husk-juglans-regia-l-volatiles-and-the-behavioral-response-of-the-invasive-walnut-husk-fly-rhagoletis-completa-cresson
#7
Landry Sarles, Antoine Boullis, Bérénice Fassotte, Georges Lognay, Agnès Verhaeghe, Frédéric Francis, François J Verheggen
BACKGROUND: Several European countries are important walnut (Juglans regia L.) producers. However, these countries must contend with the recent introduction of the Walnut Husk Fly, Rhagoletis completa Cresson (Diptera, Tephritidae), which is causing severe economic losses, especially in organic production. Because most Tephritid fruit flies use kairomones in their search for host plants, we hypothesize that this highly specialist species orients toward the volatile blend released by walnut husks...
April 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28374537/genetic-diversity-of-diaphorina-citri-and-its-endosymbionts-across-east-and-southeast-asia
#8
Yanjing Wang, Changbao Xu, Mingyi Tian, Xiaoling Deng, Yijing Cen, Yurong He
BACKGROUND: Diaphorina citri is the vector of 'Candidatus Liberibacter asiaticus', the most widespread pathogen associated huanglongbing, the most serious disease of citrus. To enhance our understanding of the distribution and origin of the psyllid, we investigated the genetic diversity and population structures of 24 populations in Asia and one from Florida based on the mtCOI gene. Simultaneously, genetic diversity and population structures of the primary endosymbiont (P-endosymbiont) 'Candidatus Carsonella ruddii' and secondary endosymbiont (S-endosymbiont) 'Candidatus Profftella armatura' of D...
April 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28370968/two-new-ppx2-mutations-associated-with-resistance-to-ppo-inhibiting-herbicides-in-amaranthus-palmeri
#9
Darci A Giacomini, Alinna M Umphres, Haozhen Nie, Thomas C Mueller, Lawrence E Steckel, Bryan G Young, Robert C Scott, Patrick J Tranel
BACKGROUND: Resistance to herbicides that inhibit protoporphyrinogen oxidase (PPO) is a widespread and growing problem for weed managers across the midwestern and midsouthern United States. In Amaranthus spp., this resistance is known to be conferred by a glycine deletion at the 210(th) amino acid (ΔG210) in PPO2. Preliminary analysis indicated that the ΔG210 mutation did not fully account for observed resistance to PPO inhibitors in two Amaranthus palmeri populations from Tennessee and one from Arkansas...
April 3, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28349672/design-synthesis-antiviral-bioactivity-and-3d-qsar-study-of-novel-ferulic-acid-ester-derivatives-containing-quinazoline-moiety
#10
Zengxue Wu, Jian Zhang, Jixiang Chen, Jianke Pan, Lei Zhao, Dengyue Liu, Awei Zhang, Jin Chen, Deyu Hu, Baoan Song
BACKGROUND: Ferulic acid and quinazoline derivatives possess good antiviral activities. In order to develop novel compounds with high antiviral activities, a series of ferulic acid ester derivatives containing quinazoline were synthesized and evaluated for their antiviral activities. RESULTS: Bioassays indicated that some of compounds exhibited good antiviral activities in vivo against tobacco mosaic virus (TMV) and cucumber mosaic virus (CMV). Compound e27 demonstrated significant curative and protective activities against TMV and CMV, with EC50 values of 162...
March 28, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28349654/piperolein-b-and-piperchabamide-d-isolated-from-black-pepper-piper-nigrum-l-as-larvicidal-compounds-against-the-diamondback-moth-plutella-xylostella
#11
Ki Seon Hwang, Young Kook Kim, Kee Woong Park, Young Tae Kim
BACKGROUND: There is growing demand for the development of alternative pest control agents that are effective as well as non-toxic to human health and the environment. Plant protection products derived from plant extracts are an eco-friendly alternative to synthetic pesticides. The aim of this study was to identify larvicidal compounds isolated from a natural source against Plutella xylostella L. In a larvicidal activity assay, several solvent fractions from the methanol extract of Piper nigrum L...
March 28, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28345196/flupyradifurone-effectively-manages-whitefly-bemisia-tabaci-med-hemiptera-aleyrodidae-and-tomato-yellow-leaf-curl-virus-tylcv-in-tomato
#12
Emmanouil Roditakis, Marianna Stavrakaki, Maria Grispou, Aikaterini Achimastou, Χavier Van Waetermeulen, Ralf Nauen, Anastasia Tsagkarakou
BACKGROUND: The cotton whitefly Bemisia tabaci (Gennadius) is among the most important pests of numerous crops and a vector of >100 plant viruses, causing significant crop losses worldwide. Managing the pest as well as inhibiting the transmission of major viruses such as Tomato yellow leaf curl virus (TYLCV) is of utmost importance for sustainable yields. The efficacy on both whiteflies and virus transmission of the novel systemic butenolide insecticide flupyradifurone, was investigated in this study...
March 27, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28345304/chemical-evidence-for-the-effect-of-urochloa-ruziziensis-on-glyphosate-resistant-soybeans
#13
Mariluce Nepomuceno, Nuria Chinchilla, Rosa M Varela, José M G Molinillo, Rodney Lacret, Pedro L C A Alves, Francisco A Macias
BACKGROUND: Soybean (Glycine max) is an important oleaginous legume that has been cultivated in new areas in Brazil, including pastures. Problems of reduced production yields have been reported by soybean growers when the crop is sown immediately after desiccation of pastures of Urochloa spp. using glyphosate. The objective of this work was to extract, isolate, and identify the major chemicals from U. ruziziensis that have phytotoxic activity and to evaluate the possible relation between this effect and the reduced soybean yield...
March 26, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28321982/susceptibility-of-insecticide-resistant-bed-bugs-cimex-lectularius-to-infection-by-fungal-biopesticide
#14
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
#15
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
#16
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
#17
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-into-food-webs-associated-with-the-south-american-tomato-pinworm
#18
Mario Naselli, Antonio Biondi, Giovanna Tropea Garzia, Nicolas Desneux, Agatino Russo, Gaetano Siscaro, Lucia Zappalà
BACKGROUND: The 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 behaviours, usually referred to as intraguild interactions. These can be direct, i.e. one species feeds directly upon the competitor (intraguild predation) or indirect, e.g. when the dominant organism competes for a food source that another organism is feeding upon (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 the 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
#19
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
#20
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
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