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https://www.readbyqxmd.com/read/29243884/dynamics-of-bed-bug-infestations-in-three-low-income-housing-communities-with-various-bed-bug-management-programs
#1
Changlu Wang, Amanda Eiden, Narinderpal Singh, Chen Zha, Desen Wang, Richard Cooper
BACKGROUND: Infestations of the common bed bug, Cimex lectularius L., have become common in low-income communities in the United States over the last 15 years. We evaluated community-based integrated pest management (IPM) programs for reducing bed bug infestations. Two housing authorities (Bayonne and Hackensack) implemented bed bug IPM programs. A third housing authority (Paterson) was used as the control site. Building-wide surveys were conducted in all communities, three times, to evaluate the effectiveness of the IPM programs...
December 15, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29243306/pest-management-science-in-2017
#2
EDITORIAL
Stephen O Duke
No abstract text is available yet for this article.
January 2018: Pest Management Science
https://www.readbyqxmd.com/read/29241845/crispr-cas9-mediated-knockout-of-two-eye-pigmentation-genes-in-the-brown-planthopper-nilaparvata-lugens-hemiptera-delphacidae
#3
Wen-Hua Xue, Nan Xu, Xiao-Bo Yuan, Hao-Hao Chen, Jin-Li Zhang, Sheng-Jie Fu, Chuan-Xi Zhang, Hai-Jun Xu
The brown planthopper Nilaparvata lugens is one of the most destructive insect pests in Asia, demonstrating high fertility and causing huge crop losses by sucking sap of rice as well as transmitting viruses. However, functional genomic studies on N. lugens are seriously constrained by lack of genetic tools. Here, we employed two eye pigmentation genes to generate germ-line mutations in N. lugens using the CRISPR/Cas9 (clustered regularly interspaced palindromic repeats/CRISPR-associated) system. We showed that injection of single guide RNA of the cinnabar gene of N...
December 11, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29241663/model-selection-for-integrated-pest-management-with-stochasticity
#4
Olcay Akman, Timothy D Comar, Daniel Hrozencik
In [X. Song and Z. Xiang, 2006. The prey-dependent consumption two-prey one-predator models with stage structure for the predator and impulsive effects. Journal of Theoretical Biology, 242, 683-698.], an integrated pest management model with periodically varying climatic conditions was introduced. In order to address a wider range of environmental effects, the authors here have embarked upon a series of studies resulting in a more flexible modeling approach. In [O. Akman, T.D. Comar, and D. Hrozencik, 2013...
December 11, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29241315/natural-antioxidant-extracts-as-food-preservatives
#5
Norma F Santos-Sánchez, Raúl Salas-Coronado, Rogelio Valadez-Blanco, Beatriz Hernández-Carlos, Paula C Guadarrama-Mendoza
The food industry is becoming more specialized and processing methods are continuously being developed to meet consumer needs. Consumers demand products that are safe and preferably free of synthetic additives. These additives are associated with health effects, in most cases without reasonable justification. Consequently, consumers are looking for clearly labelled products that guarantee the absence of synthetic additives. This has led to the need to search for natural additives, which the food industry claims arenatural antioxidant preservatives...
October 2017: Acta Scientiarum Polonorum. Technologia Alimentaria
https://www.readbyqxmd.com/read/29240921/cry1-bt-susceptibilities-of-fall-armyworm-lepidoptera-noctuidae-host-strains
#6
David A Ingber, Charles E Mason, Lindsey Flexner
The fall armyworm, Spodoptera frugiperda (Smith; Lepidoptera: Noctuidae), is a highly polyphagous, multivoltine pest of commercial crops including corn (Zea mays L.), cotton (Gossypium spp. L.), rice (Oryza sativa L.), and pasture grasses. Fall armyworm has become a growing concern in agricultural communities across the Americas as field populations in many locales have evolved resistance to several Cry1 toxins derived from the bacterium Bacillus thuringiensis Berliner (Bt). An often overlooked aspect of fall armyworm biology is the existence of two host strains, the 'rice' and 'corn' strains...
December 12, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29240906/differential-inhibition-of-helicoverpa-armigera-lep-noctuidae-gut-digestive-trypsin-by-extracted-and-purified-inhibitor-of-datura-metel-solanales-solanaceae
#7
Reza Navaei-Bonab, Majid Kazzazi, Moosa Saber, Mohammad Vatanparast
The cotton bollworm, Helicoverpa armigera Hubner (Lep: Noctuidae), is an economically important pest of numerous major food crops worldwide. Protease inhibitors from plants, expressed constitutively in transgenic crops, have potential for pest management as an alternative to chemical pesticides. In this study, a protease inhibitor was isolated, purified, and characterized from Datura metel L. seeds. The purity of the isolated inhibitor was confirmed by reverse-phase high-performance liquid chromatography, and activity staining showed one major peak and one clear activity band for the protein...
December 12, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29240843/behavior-of-bacteriome-symbionts-during-transovarial-transmission-and-development-of-the-asian-citrus-psyllid
#8
Hiroki Dan, Naoya Ikeda, Masaya Fujikami, Atsushi Nakabachi
The Asian citrus psyllid Diaphorina citri Kuwayama (Hemiptera: Liviidae) is a serious pest worldwide, transmitting Candidatus Liberibacter spp. (Alphaproteobacteria), the causative agents of a devastating citrus disease known as huanglongbing or greening disease. In a symbiotic organ called the bacteriome, D. citri possesses an organelle-like defensive symbiont, Candidatus Profftella armatura (Betaproteobacteria), and a nutritional symbiont, Ca. Carsonella ruddii (Gammaproteobacteria). Drastically reduced symbiont genomes and metabolic complementarity among the symbionts and D...
2017: PloS One
https://www.readbyqxmd.com/read/29239611/a-novel-peptidase-kunitz-inhibitor-from-platypodium-elegans-seeds-is-active-against-spodoptera-frugiperda-larvae
#9
Suellen Rodrigues Ramalho, Cezar da Silva Bezerra, Daniella Gorete Lourenço de Oliveira, Letícia Souza Lima, Simone Maria Neto, Caio Fernando Ramalho de Oliveira, Newton Valério Verbisck, Maria Lígia Rodrigues Macedo
A novel Kunitz-type inhibitor from Platypodium elegans seeds (PeTI) was purified and characterized. The mass spectrometry analyses of PeTI indicated an intact mass of 19,701 Da, and a partial sequence homologous to Kunitz inhibitors. PeTI was purified by ion exchange and affinity chromatographies. A complex with a 1:1 ratio was obtained only for bovine trypsin, showing a Ki = 0.16 nM. Stability studies showed that PeTI was stable over a wide range of temperature (37-80 °C) and pH (2-10). The inhibitory activity of PeTI was affected by dithiothreitol (DTT)...
December 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29239513/without-or-without-pheromone-habituation-possible-differences-between-insect-orders
#10
David Maxwell Suckling, Lloyd D Stringer, Alfredo Jiménez-Pérez, Gimme H Walter, Nicola Sullivan, Ashraf M El-Sayed
BACKGROUND: Habituation to sex pheromones is one of the key mechanisms in mating disruption, an insect control tactic. Male moths often show reduced sexual response after pre-exposure to female sex pheromone. Mating disruption is relatively rare in insect orders other than Lepidoptera. RESULTS: As a positive control we confirmed habituation in a moth (Epiphyas postvittana) using 24 h pre-exposure to sex pheromone to reduce subsequent activation behaviour. We then tested the impact of pre-exposure to sex or trail pheromone on subsequent behavioural response with insects from three other orders...
December 14, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29239512/inheritance-and-fitness-costs-of-spodoptera-frugiperda-lepidoptera-noctuidae-resistance-to-spinosad-in-brazil
#11
Daniela M Okuma, Daniel Bernardi, Renato J Horikoshi, Oderlei Bernardi, Aline P Silva, Celso Omoto
BACKGROUND: Spodoptera frugiperda is a pest of economically important crops in the South America. In Brazil, this species is considered the most destructive pest of maize. The use of spinosyn insecticides in Insect Resistance Management (IRM) has been one of the strategies to control this pest. In this study, we selected a resistant strain of S. frugiperda to spinosad and evaluated the inheritance and fitness costs of the resistance. RESULTS: The estimated LC50 values were 0...
December 14, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29238278/role-of-metcalfa-pruinosa-as-a-vector-for-pseudomonas-syringae-pv-actinidiae
#12
Irene Donati, Sofia Mauri, Giampaolo Buriani, Antonio Cellini, Francesco Spinelli
After 20 years of steady increase, kiwifruit industry faced a severe arrest due to the pandemic spread of the bacterial canker, caused by Pseudomonas syringae pv. actinidiae (Psa). The bacterium penetrates the host plant primarily via natural openings or wounds, and its spread is mainly mediated by atmospheric events and cultural activities. Since the role of sucking insects as vectors of bacterial pathogens is widely documented, we investigated the ability of Metcalfa pruinosa Say (1830), one of the most common kiwifruit pests, to transmit Psa to healthy plants in laboratory conditions...
December 2017: Plant Pathology Journal
https://www.readbyqxmd.com/read/29238078/the-genetic-architecture-of-ecological-adaptation-intraspecific-variation-in-host-plant-use-by-the-lepidopteran-crop-pest-chloridea-virescens
#13
Sara J Oppenheim, Fred Gould, Keith R Hopper
Intraspecific variation in ecologically important traits is a cornerstone of Darwin's theory of evolution by natural selection. The evolution and maintenance of this variation depends on genetic architecture, which in turn determines responses to natural selection. Some models suggest that traits with complex architectures are less likely to respond to selection than those with simple architectures, yet rapid divergence has been observed in such traits. The simultaneous evolutionary lability and genetic complexity of host plant use in the Lepidopteran subfamily Heliothinae suggest that architecture may not constrain ecological adaptation in this group...
December 14, 2017: Heredity
https://www.readbyqxmd.com/read/29237851/micrornas-regulate-the-sesquiterpenoid-hormonal-pathway-in-drosophila-and-other-arthropods
#14
Zhe Qu, William G Bendena, Wenyan Nong, Kenneth W Siggens, Fernando G Noriega, Zhen-Peng Kai, Yang-Yang Zang, Alex C Koon, Ho Yin Edwin Chan, Ting Fung Chan, Ka Hou Chu, Hon Ming Lam, Michael Akam, Stephen S Tobe, Jerome Ho Lam Hui
Arthropods comprise the majority of all described animal species, and understanding their evolution is a central question in biology. Their developmental processes are under the precise control of distinct hormonal regulators, including the sesquiterpenoids juvenile hormone (JH) and methyl farnesoate. The control of the synthesis and mode of action of these hormones played important roles in the evolution of arthropods and their adaptation to diverse habitats. However, the precise roles of non-coding RNAs, such as microRNAs (miRNAs), controlling arthropod hormonal pathways are unknown...
December 20, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29236860/scale-insects-hemiptera-coccoidea-associated-with-arabica-coffee-and-geographical-distribution-in-the-neotropical-region
#15
Maurício J Fornazier, David S Martins, Maria Cristina G DE Willink, Victor D Pirovani, Paulo S F Ferreira, José C Zanuncio
Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21), Putoidae (2) and Rhizoecidae (19) have been associated with roots, branches, leaves, flowers and fruits of Arabica coffee in the Neotropics. Eight species were found associated with Arabica coffee in Minas Gerais and Espírito Santo States in this study, and Coccidae was the most frequent family...
December 11, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29236858/effects-of-temperature-on-the-feeding-behavior-of-alabama-argillacea-h%C3%A3-bner-lepidoptera-noctuidae-on-bt-and-non-bt-cotton-plants
#16
Francisco S Ramalho, Jéssica K S Pachú, Aline C S Lira, José B Malaquias, Bárbara D S Brito, José C Zanuncio, Francisco S Fernandes
The host acceptance behavior and environmental factors as temperature affect the feeding behavior of Lepidoptera pests. Thus, they must be considered in studies about the risk potential of resistance evolution. The current study sets the differences in the feeding behavior of neonate Alabama argillacea (Hübner) (Lepidoptera: Noctuidae) larvae exposed to Bt and non-Bt cotton plants, under different temperatures and time gap after hatching. Two cotton cultivars were used: the Bt (DP 404 BG - bollgard) and the non-transformed isoline, DP 4049...
December 7, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29236776/an-adenylyl-cyclase-like-9-gene-nlac9-influences-growth-and-fecundity-in-the-brown-planthopper-nilaparvata-lugens-st%C3%A3-l-hemiptera-delphacidae
#17
LinQuan Ge, HaoTian Gu, Bo Huang, Qisheng Song, David Stanley, Fang Liu, Guo-Qing Yang, Jin-Cai Wu
The cAMP/PKA intracellular signaling pathway is launched by adenylyl cyclase (AC) conversion of adenosine triphosphate (ATP) to 3', 5'-cyclic AMP (cAMP) and cAMP-dependent activation of PKA. Although this pathway is very well known in insect physiology, there is little to no information on it in some very small pest insects, such as the brown planthopper (BPH), Nilaparvata lugens Stål. BPH is a destructive pest responsible for tremendous crop losses in rice cropping systems. We are investigating the potentials of novel pest management technologies from RNA interference perspective...
2017: PloS One
https://www.readbyqxmd.com/read/29236697/performance-of-dna-metabarcoding-standard-barcoding-and-morphological-approach-in-the-identification-of-host-parasitoid-interactions
#18
Martin Šigut, Martin Kostovčík, Hana Šigutová, Jiří Hulcr, Pavel Drozd, Jan Hrček
Understanding interactions between herbivores and parasitoids is essential for successful biodiversity protection and monitoring and for biological pest control. Morphological identifications employ insect rearing and are complicated by insects' high diversity and crypsis. DNA barcoding has been successfully used in studies of host-parasitoid interactions as it can substantially increase the recovered real host-parasitoid diversity distorted by overlooked species complexes, or by species with slight morphological differences...
2017: PloS One
https://www.readbyqxmd.com/read/29236312/hazard-assessment-of-the-pesticides-kraft%C3%A2-36-ec-and-score%C3%A2-in-a-tropical-natural-soil-using-an-ecotoxicological-test-battery
#19
Vanessa Bezerra De Menezes Oliveira, Miriam De Oliveira Bianchi, Evaldo Luiz Gaeta Espíndola
Pesticides are widely used in agricultural fields to control plant diseases, weeds and pests, however, the unforeseeable consequences of releasing these compounds into the soil and their effects on terrestrial invertebrates are a matter of grave concern. The aim of this study was to determine the direct impact of two pesticides, KRAFT® 36 EC (an insecticide; a.i abamectin) and SCORE® (a fungicide; a.i. difenoconazole), on non-target terrestrial invertebrates. Ecotoxicological tests were performed to evaluate the chronic and acute toxicity of these compounds to a potworm (Enchytraeus crypticus), a collembolan (Folsomia candida) and a mite (Hypoaspis aculeifer)...
December 13, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29235708/chlorantraniliprole-resistance-and-its-biochemical-and-new-molecular-target-mechanisms-in-laboratory-and-field-strains-of-chilo-suppressalis-walker
#20
Sun Yang, Lu Xu, Chen Qiong, Wenjing Qin, Huang Shuijin, Houguo Qin
BACKGROUND: The rice striped stem borer (SSB), Chilo suppressalis (Walker), is one of the most economically important and destructive rice pests in China. To date, the efficiency of conventional insecticides has decreased greatly because of the development of high resistance. Since the introduction of chlorantraniliprole in 2008, SSB has presented resistance issues. RESULTS: In this study, lab resistant strains R1 and R2 (RR of 38.8 and 110.4, respectively) were established and a field population HR (RR of 249...
December 13, 2017: Pest Management Science
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