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Integrated Pest Management

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https://www.readbyqxmd.com/read/28937625/one-pot-multi-enzymatic-synthesis-of-the-four-stereoisomers-of-4-methylheptan-3-ol
#1
Elisabetta Brenna, Michele Crotti, Francesco G Gatti, Daniela Monti, Fabio Parmeggiani, Andrea Pugliese
The use of pheromones in the integrated pest management of insects is currently considered a sustainable and environmentally benign alternative to hazardous insecticides. 4-Methylheptan-3-ol is an interesting example of an insect pheromone, because its stereoisomers are active towards different species. All four possible stereoisomers of this compound were prepared from 4-methylhept-4-en-3-one by a one-pot procedure in which the two stereogenic centres were created during two sequential reductions catalysed by an ene-reductase (ER) and an alcohol dehydrogenase (ADH), respectively...
September 22, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28916376/transcriptome-profiling-of-the-plutella-xylostella-lepidoptera-plutellidae-ovary-reveals-genes-involved-in-oogenesis
#2
Lu Peng, Lei Wang, Yi-Fan Yang, Ming-Min Zou, Wei-Yi He, Yue Wang, Qing Wang, Liette Vasseur, Min-Sheng You
BACKGROUND: As a specialized organ, the insect ovary performs valuable functions by ensuring fecundity and population survival. Oogenesis is the complex physiological process resulting in the production of mature eggs, which are involved in epigenetic programming, germ cell behavior, cell cycle regulation, etc. Identification of the genes involved in ovary development and oogenesis is critical to better understand the reproductive biology and screening the potential molecular targets in Plutella xylostella, a worldwide destructive pest of economically major crops...
September 12, 2017: Gene
https://www.readbyqxmd.com/read/28915542/comparative-susceptibility-of-two-neotropical-predators-eriopis-connexa-and-chrysoperla-externa-to-acetamiprid-and-pyriproxyfen-short-and-long-term-effects-after-egg-exposure
#3
Federico Rimoldi, Marilina N Fogel, Alicia E Ronco, Marcela I Schneider
Compatibility assessments between selective insecticides and the natural enemies of pests are essential for integrated-pest-management programs. Chrysoperla externa and Eriopis connexa are two principal Neotropical predators of agricultural pests whose conservation in agroecosystems requires a toxicity evaluation of pesticides to minimize the impact on those beneficial insects on the environment. The objective of this work was to evaluate the toxicity of the insecticides pyriproxyfen and acetamiprid on C. externa and E...
September 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28892483/quality-control-methods-for-aedes-albopictus-sterile-male-production
#4
Fabrizio Balestrino, Arianna Puggioli, Marco Carrieri, Jérémy Bouyer, Romeo Bellini
The capacity of the released sterile males to survive, disperse, compete with wild males and inseminate wild females is an essential prerequisite to be evaluated in any area-wide integrated pest management (AW-IPM) programs including a sterile insect release method. Adequate quality control tests supported by standardized procedures need to be developed to measure these parameters and to identify and correct potential inappropriate rearing or handling methods affecting the overall male quality. In this study, we report results on the creation and validation of the first quality control devices designed to infer the survival and mating capacity of radio-sterilized Aedes albopictus males through the observation of their flight capacity under restricted conditions (flight organ device) and after stress treatment (aspirator device)...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28881954/within-plant-distribution-and-susceptibility-of-hazelnut-cultivars-to-mikomya-coryli-diptera-cecidomyiidae
#5
Ali Güncan, Ebru Gümüs
The Mikomya coryli (Kieffer) (Diptera: Cecidomyiidae) is widespread in Europe and the most important cecidomyiid pest of hazelnut. Within-plant distribution, susceptibility of 18 Turkish hazelnut cultivars ('Acı,' 'Allahverdi,' 'Çakıldak,' 'Cavcava,' 'Foşa,' 'İncekara,' 'Kalınkara,' 'Kan,' 'Karafindık,' 'Kargalak,' 'Kuş,' 'Mincane,' 'Palaz,' 'Sivri,' 'Tombul,' 'Uzunmusa,' 'Yassı Badem,' and 'Yuvarlak Badem'), and the phenology of larvae of this pest in hazelnut leaves and involucres were assessed in 2014 and 2015 in Giresun (Turkey)...
August 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28881953/wireworm-in-quebec-field-crops-specific-community-composition-in-north-america
#6
J Saguez, A Latraverse, J De Almeida, W G van Herk, R S Vernon, J-P Légaré, J Moisan-De Serres, M Fréchette, G Labrie
Wireworms are important economic pests that attack the seeds and roots of numerous vegetable and field crops worldwide. A 5-yr study was conducted in the main agricultural regions of the province of Quebec (Canada), to identify and characterize the wireworm communities (Coleoptera: Elateridae) that occur in fields planted with economically important crops (maize, soybean, cereals, canola, and grasslands). Bait traps were used to collect wireworms each spring from 2011 to 2015. More than 600 sites were sampled in total, involving ca...
August 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28876534/sequential-sampling-plans-and-economic-injury-level-for-empoasca-kraemeri-on-different-technological-levels-of-common-bean-crops
#7
Marcelo Fialho de Moura, Mayara Cristina Lopes, Renata Ramos Pereira, Jorgiane Benevenute Parish, Mateus Chediak, Lucas de Paulo Arcanjo, Daiane das Graças do Carmo, Marcelo Coutinho Picanço
BACKGROUND: Empoasca kraemeri is an important pest of the common bean in the tropics and subtropics. However, economic injury levels and sequential sampling plans for this pest have not yet been determined for this crop. Thus, the objectives of this research were to determine E. kraemeri sequential sampling plans and economic injury levels in the common bean at different crop technological levels. RESULTS: Common bean plants tolerate low attack intensities of this pest (up to 1 adult...
September 6, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28875085/remote-sensing-and-spatial-statistical-techniques-for-modelling-ommatissus-lybicus-hemiptera-tropiduchidae-habitat-and-population-densities
#8
Khalifa M Al-Kindi, Paul Kwan, Nigel R Andrew, Mitchell Welch
In order to understand the distribution and prevalence of Ommatissus lybicus (Hemiptera: Tropiduchidae) as well as analyse their current biographical patterns and predict their future spread, comprehensive and detailed information on the environmental, climatic, and agricultural practices are essential. The spatial analytical techniques such as Remote Sensing and Spatial Statistics Tools, can help detect and model spatial links and correlations between the presence, absence and density of O. lybicus in response to climatic, environmental, and human factors...
2017: PeerJ
https://www.readbyqxmd.com/read/28873552/polyphenol-and-l-ascorbic-acid-content-in-tomato-as-influenced-by-high-lycopene-genotypes-and-organic-farming-at-different-environments
#9
Raúl Martí, Miguel Leiva-Brondo, Inmaculada Lahoz, Carlos Campillo, Jaime Cebolla-Cornejo, Salvador Roselló
The accumulation of polyphenols and l-ascorbic acid was evaluated under conventional (integrated pest management, IPM) and organic farming, as means to increase the accumulation of chemoprotective compounds. The effect of genotype was considerably higher than the growing system, in fact it is determining. 'Kalvert', a high-lycopene cultivar, outstood for the accumulation of most polyphenols, though low-carotenoid cultivars with high accumulation were also detected. Organic farming significantly increased the levels of caffeic acid by 20%, but reduced those of ferulic acid and naringenin by 13% and 15% respectively...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28873472/incorporating-basic-and-applied-approaches-to-evaluate-the-effects-of-invasive-asian-carp-on-native-fishes-a-necessary-first-step-for-integrated-pest-management
#10
Quinton E Phelps, Sara J Tripp, Kyle R Bales, Daniel James, Robert A Hrabik, David P Herzog
Numerous studies throughout North America allege deleterious associations among invasive Asian Carp and native fishes; however, no empirical evidence on a system-wide scale exists. We used Mississippi River Basin fish community data collected by the Long Term Resource Monitoring program and the Missouri Department of Conservation to evaluate possible interaction between Asian Carp and native fishes. Results from two decades of long-term monitoring throughout much of the Mississippi River suggest that Silver Carp relative abundance has increased while relative abundance (Bigmouth Buffalo [F 3, 8240 = 6...
2017: PloS One
https://www.readbyqxmd.com/read/28871265/expression-of-a-chimeric-gene-encoding-insecticidal-crystal-protein-cry1aabc-of-bacillus-thuringiensis-in-chickpea-cicer-arietinum-l-confers-resistance-to-gram-pod-borer-helicoverpa-armigera-hubner
#11
Alok Das, Subhojit Datta, Shallu Thakur, Alok Shukla, Jamal Ansari, G K Sujayanand, Sushil K Chaturvedi, P A Kumar, N P Singh
Domain swapping and generation of chimeric insecticidal crystal protein is an emerging area of insect pest management. The lepidopteran insect pest, gram pod borer (Helicoverpa armigera H.) wreaks havoc to chickpea crop affecting production. Lepidopteran insects were reported to be controlled by Bt (cryI) genes. We designed a plant codon optimized chimeric Bt gene (cry1Aabc) using three domains from three different cry1A genes (domains I, II, and III from cry1Aa, cry1Ab, and cry1Ac, respectively) and expressed it under the control of a constitutive promoter in chickpea (cv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28865796/ph-regulates-pore-formation-of-a-protease-activated-vip3aa-from-bacillus-thuringiensis
#12
Thittaya Kunthic, Hirokazu Watanabe, Ryuji Kawano, Yoshikazu Tanaka, Boonhiang Promdonkoy, Min Yao, Panadda Boonserm
Vip3Aa insecticidal protein is produced from Bacillus thuringiensis and exerts a broad spectrum of toxicity against lepidopteran insect species. Although Vip3Aa has been effectively used as part of integrated pest management strategies, the mechanism of the toxin remains unclear. Here, we investigated the effect of pH in a range from 5.0 to 10.0 on the pore-forming activity of the trypsin activated Vip3Aa (actVip3Aa) by in vitro pore-forming assays. Based on calcein release assay, actVip3Aa could permeabilize the artificial neutral liposomes under all the pH tested, except pH10...
September 1, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28864153/inhibition-coefficient-and-molecular-diversity-of-multi-stress-tolerant-trichoderma-as-potential-biocontrol-agent-against-sclerotium-rolfsii-sacc
#13
Darshna G Hirpara, H P Gajera, Jaydeep G Hirapara, B A Golakiya
Trichoderma is one of the most exploited biocontrol agent for the management of plant diseases. Twenty strains of Trichoderma (six of T. harzianum, four of T. viride, three of T. virens, three of T. koningii, each one of T. hamatum, T. reesei, T. parceramosum and Trichoderma spp.) subjected to in vitro antagonism up to 12days after inoculation against Sclerotium rolfsii Sacc. causing stem rot in groundnut. A new concept was developed to determine inhibition coefficient representing pathogen biology and biocontrol related biophysical variables...
August 31, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28858251/insecticides-for-suppression-of-nylanderia-fulva
#14
Dawn Calibeo, Faith Oi, David Oi, Catharine Mannion
Nylanderia fulva (Mayr) is an invasive ant that is a serious pest in the southern United States. Pest control operators and homeowners are challenged to manage pest populations below acceptable thresholds. Contact and bait insecticides are key components of an Integrated Pest Management (IPM) strategy, however, little is known about their efficacy. In repellency and efficacy bioassays, N. fulva were not completely repelled by any insecticide tested, although fewer ants crossed a surface treated with Temprid(®)...
August 31, 2017: Insects
https://www.readbyqxmd.com/read/28857332/landscape-genomics-of-colorado-potato-beetle-provides-evidence-of-polygenic-adaptation-to-insecticides
#15
Michael S Crossley, Yolanda H Chen, Russell L Groves, Sean D Schoville
The ability of insect pests to rapidly and repeatedly adapt to insecticides has long challenged entomologists and evolutionary biologists. Since Crow's seminal paper on insecticide resistance in 1957, new data and insights continue to emerge that are relevant to the old questions about how insecticide resistance evolves: such as whether it is predominantly mono- or polygenic, and evolving from standing vs. de novo genetic variation. Many studies support the monogenic hypothesis, and current management recommendations assume single- or two-locus models...
August 31, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28855895/the-rhizosphere-bacterial-microbiota-of-vitis-vinifera-cv-pinot-noir-in-an-integrated-pest-management-vineyard
#16
Giorgia Novello, Elisa Gamalero, Elisa Bona, Lara Boatti, Flavio Mignone, Nadia Massa, Patrizia Cesaro, Guido Lingua, Graziella Berta
Microorganisms associated with Vitis vinifera (grapevine) can affect its growth, health and grape quality. The aim of this study was to unravel the biodiversity of the bacterial rhizosphere microbiota of grapevine in an integrated pest management vineyard located in Piedmont, Italy. Comparison between the microbial community structure in the bulk and rhizosphere soil (variable: space) were performed. Moreover, the possible shifts of the bulk and rhizosphere soil microbiota according to two phenological stages such as flowering and early fruit development (variable: time) were characterized...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28855720/side-effects-of-pesticides-on-the-generalist-endoparasitoid-palmistichus-elaeisis-hymenoptera-eulophidae
#17
Ricardo Alcántara-de la Cruz, José Cola Zanuncio, Mabio Chrisley Lacerda, Carlos Frederico Wilcken, Flávio Lemes Fernandes, Wagner de Souza Tavares, Marcus Alvarenga Soares, Carlos Sigueyuki Sediyama
New plant protection strategies focus on minimizing chemical pesticide use and increasing their compatibility with biological control agents. The objective was to evaluate the side-effects of glyphosate, diflubenzuron, malathion, tebuconazole and triflumuron (at 720, 45, 400, 150 and 20 g ai ha(-1), respectively), pesticides authorized for soybean crops in Brazil, on the parasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae) reared on Anticarsia gemmatalis (Lepidoptera: Noctuidae). The emergence and female numbers produced per P...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28852987/drosophila-suzukii-in-southern-neotropical-region-current-status-and-future-perspectives
#18
REVIEW
F Andreazza, D Bernardi, R S S Dos Santos, F R M Garcia, E E Oliveira, M Botton, D E Nava
Non-native insect pests are often responsible for important damage to native and agricultural plant hosts. Since Drosophila suzukii Matsumura (Diptera: Drosophilidae) has become an important pest in North America and Europe (i.e., in 2008), the global production of soft thin-skinned fruits has faced severe production losses. In the southern Neotropical region, however, the first record of D. suzukii occurred in 2013 in the south of Brazil. It has also been recorded in Uruguay, Argentina, and Chile. Despite its recent occurrence in the southern Neotropical region, the fast dispersion of D...
August 30, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28841712/characterization-of-the-pollen-beetle-brassicogethes-aeneus-dispersal-from-woodlands-to-winter-oilseed-rape-fields
#19
Amandine Suzanne Juhel, Corentin Mario Barbu, Pierre Franck, Jean Roger-Estrade, Arnaud Butier, Mathieu Bazot, Muriel Valantin-Morison
Many crop pests rely on resources out of crop fields; understanding how they colonize the fields is an important factor to develop integrated pest management. In particular, the time of crop colonization and damage severity might be determined by pest movements between fields and non-crop areas. Notably, the pollen beetle, Brassicogethes aeneus, previously named Meligethes aeneus, one of the most important pests of winter oilseed rape, overwinters in woodlands. As a result, its abundance increases in oilseed rape fields near wooded areas...
2017: PloS One
https://www.readbyqxmd.com/read/28819698/sublethal-effects-of-pyrethroid-and-neonicotinoid-insecticides-on-iphiseiodes-zuluagai-denmark-and-muma-mesostigmata-phytoseiidae
#20
Odimar Zanuzo Zanardi, Gabriela Pavan Bordini, Aline Aparecida Franco, Cynthia Renata Oliveira Jacob, Pedro Takao Yamamoto
The predator mite Iphiseiodes zuluagai Denmark & Muma is an important biological-control agent of mite pests, and it is one of the most common species found in citrus orchards. This study assessed, under laboratory conditions, the toxicity and duration of the harmful effects of five insecticides, the three pyrethroids deltamethrin, esfenvalerate and lambda-cyhalothrin, and the two neonicotinoids imidacloprid and thiamethoxam on I. zuluagai. Furthermore, we estimated the life-table parameters of the predator...
August 17, 2017: Ecotoxicology
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