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https://www.readbyqxmd.com/read/29666188/extracellular-loop-structures-in-silkworm-abcc-transporters-determine-their-specificities-for-bacillus-thuringiensis-cry-toxins
#1
Haruka Endo, Shiho Tanaka, Satomi Adegawa, Fumika Ichino, Hiroko Tabunoki, Shingo Kikuta, Ryoichi Sato
Bacillus thuringiensis Cry toxins are insecticidal proteins used widely for pest control. They are lethal to a restricted range of insects via specific interactions with insect receptors such as the ATP-binding cassette transporter subfamily members C2 (ABCC2) and C3 (ABCC3). It is unclear how these different receptors contribute to insect susceptibility to Cry1A toxins. Here, we investigated the differences between the silkworm (Bombyx mori) ABCC2 (BmABCC2_S) and ABCC3 (BmABCC3) receptors in mediating Cry toxicity...
April 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29665888/survival-ability-of-mexican-fruit-fly-males-from-different-strains-in-presence-of-the-predatory-orb-weaving-spider-argiope-argentata-araneae-araneidae
#2
A Dor, P Liedo
The sterile insect technique (SIT) is a key element for the integrated management of pest populations of the Mexican fruit fly, Anastrepha ludens, in Mexico. Its success depends on the survival of mass-reared sterile males and their ability to mate with wild females. However, colonization and mass-rearing conditions can adversely affect their ability to avoid predators. To test if colony management strategies could contribute to improve field survival abilities of mass-reared flies, we compared the survival of males exposed to the orb-weaver spider Argiope argentata...
April 18, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29665868/the-potential-distribution-of-the-russian-wheat-aphid-diuraphis-noxia-an-updated-distribution-model-including-irrigation-improves-model-fit-for-predicting-potential-spread
#3
G A Avila, M Davidson, M van Helden, L Fagan
Diuraphis noxia (Kurdjumov), Russian wheat aphid, is one of the world's most invasive and economically important agricultural pests of wheat and barley. In May 2016, it was found for the first time in Australia, with further sampling confirming it was widespread throughout south-eastern regions. Russian wheat aphid is not yet present in New Zealand. The impacts of this pest if it establishes in New Zealand, could result in serious control problems in wheat- and barley-growing regions. To evaluate whether D...
April 18, 2018: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/29659915/temperature-alters-the-response-to-insecticides-in-drosophila-suzukii-diptera-drosophilidae
#4
Nadia Saeed, Lorenzo Tonina, Andrea Battisti, Nicola Mori
Drosophila suzukii Matsumura (Diptera: Drosophilidae) is an invasive pest in Europe and is a major threat to the soft fruit industry. Because of an ample temperature range, the pest spans from low to high elevation crops in mountain areas of the Southern Alps. Starting from field observations on the variable efficacy of insecticides under different temperatures, experiments were designed to test the efficacy of chemical families of insecticides available against this pest. Pyrethroids and spynosins proved to be the most effective under all temperature conditions (14, 22, and 30°C) in all assays...
April 5, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29659907/effect-of-cold-storage-on-biological-traits-of-psix-saccharicola-hymenoptera-platygastridae-an-egg-parasitoid-of-acrosternum-arabicum-hemiptera-pentatomidae
#5
Farzane Forouzan, Mohammad Amin Jalali, Mahdi Ziaaddini, Hamid Hashemi Rad
Psix saccharicola (Mani) (Hymenoptera: Platygastridae) is a solitary egg parasitoid of the pistachio green stink bug, Acrosternum arabicum (Wagner) (Hemiptera: Pentatomidae), which is one of the most important pests of pistachio in Iran. Augmentation of P. saccharicola field populations using mass-reared individuals may provide an alternative to conventional pesticide use for pistachio green stink bug control. Cold storage is an important component of mass-rearing protocols for optimum timing of host egg parasitization and potentially extended storage of P...
April 5, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29659892/effect-of-physiological-state-on-female-melon-fly-diptera-tephritidae-attraction-to-host-and-food-odor-in-the-field
#6
Roger I Vargas, Jaime C Piñero, Neil W Miller
Foraging behavior of wild female melon fly, Bactrocera (Zeugodacus) cucurbitae Coquillett, a worldwide pest of economically important cucurbit crops, was examined through mark and recapture studies in both wild (Kona: dominated by the invasive weed ivy gourd, Coccinea grandis [L.] Voigt [Cucurbitaceae]), and cultivated (Kapoho: dominated by papaya, Carica papaya L. [Caricaceae] orchards) habitats on Hawaii Island. In particular, the extent to which wild melon flies and color-marked F2 females responded to cucumber odor and Solulys yeast hydrolysate laced with ammonium acetate (1%, wt/vol) according to sexual maturity stage and degree of protein hunger was documented...
April 12, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29659890/postharvest-irradiation-treatment-for-quarantine-control-of-western-flower-thrips-thysanoptera-thripidae
#7
Adrian H Nicholas, Peter A Follett
The western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is an important pest of fresh horticultural produce and as such is considered a biosecurity risk in many countries from which it is absent. Information is needed on the radiation tolerance of important surface pests of quarantine importance such as F. occidentalis so that phytosanitary irradiation treatments for exported fresh commodities can be lowered to below the 400 Gy generic treatment currently approved for most insects in the United States and Australia...
April 5, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29659772/interaction-between-two-leafminer-parasitoids-halticoptera-arduine-hymenoptera-pteromalidae-and-diglyphus-isaea-hymenoptera-eulophidae-in-the-management-of-liriomyza-huidobrensis-diptera-agromyzidae
#8
Samuel K Muchemi, Claus P W Zebitz, Christian Borgemeister, Komivi S Akutse, Caroline N Foba, Sunday Ekesi, Komi K M Fiaboe
Liriomyza spp., leafminer flies (Mik; Diptera: Agromyzidae), are economically important quarantine pests that puncture and mine leaves and fruits of various horticultural crops worldwide, affecting yield and trade. Halticoptera arduine (Walker; Hymenoptera: Pteromalidae), a key parasitoid from the pests' areas of origin in South America, was introduced as a potential alternative management strategy. Prior to H. arduine release, its potential interactions with the dominant local ectoparasitoid, Diglyphus isaea (Walker; Hymenoptera: Eulophidae), were assessed...
April 11, 2018: Environmental Entomology
https://www.readbyqxmd.com/read/29659769/landscape-context-affects-aphid-parasitism-by-lysiphlebus-testaceipes-hymenoptera-aphidiinae-in-wheat-fields
#9
Norman C Elliott, Michael J Brewer, Kristopher L Giles
Winter wheat is Oklahoma's most widely grown crop, and is planted during September and October, grows from fall through spring, and is harvested in June. Winter wheat fields are typically interspersed in a mosaic of habitats in other uses, and we hypothesized that the spatial and temporal composition and configuration of landscape elements, which contribute to agroecosystem diversity also influence biological control of common aphid pests. The parasitoid Lysiphlebus testaceipes (Cresson; Hymenoptera: Aphidiinae) is highly effective at reducing aphid populations in wheat in Oklahoma, and though a great deal is known about the biology and ecology of L...
April 12, 2018: Environmental Entomology
https://www.readbyqxmd.com/read/29657396/projected-economic-losses-due-to-vector-and-vector-borne-parasitic-diseases-in-livestock-of-india-and-its-significance-in-implementing-the-concept-of-integrated-practices-for-vector-management
#10
REVIEW
B W Narladkar
Broadly, species of arthropods infesting livestock are grouped into flies (biting and non-biting), fleas, lice (biting and sucking), ticks (soft and hard), and mites (burrowing, non-burrowing, and follicular). Among which, biting and non-biting flies and ticks are the potent vectors for many bacterial, viral, rickettsial, and protozoan diseases. Vectors of livestock are having economic significance on three points (1) direct losses from their bite and annoyance, worries, and psychological disturbances produced during the act of biting and feeding, (2) diseases they transmit, and (3) expenditure incurred for their control...
February 2018: Veterinary World
https://www.readbyqxmd.com/read/29656551/efficacy-of-three-different-steamers-for-control-of-bed-bugs-cimex-lectularius-l
#11
Desen Wang, Changlu Wang, Guohong Wang, Chen Zha, Amanda L Eiden, Richard Cooper
BACKGROUND: Bed bugs, Cimex lectularius L., have become one of the most difficult urban pests to control. Steam treatment is reported to be an effective method to kill bed bugs and is considered to be an important component of bed bug integrated pest management (IPM). We evaluated and compared the efficacy of two affordable consumer-grade commercial steamers to a commonly used professional-grade steamer for killing bed bugs. RESULTS: In laboratory experiments, the consumer-grade steamer at an affordable price achieved the same high control efficacy as the professional-grade steamer for treating bed bugs exposed on mattresses (100% bed bug mortality), located beneath a fabric cover (>89% bed bug mortality), or hiding in cracks (100% bed bug mortality)...
April 15, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29656190/effect-of-titanium-dioxide-nanoparticles-on-the-bioavailability-and-neurotoxicity-of-cypermethrin-in-zebrafish-larvae
#12
Meng Li, Qiong Wu, Qiangwei Wang, Dandan Xiang, Guonian Zhu
In aquatic environment, the presence of nanoparticles (NPs) has been reported to modify the bioavailability and toxicity of the organic toxicants. Nevertheless, the combined toxicity of NPs and the pesticides that were used world-widely still remains unclear. Cypermethrin (CYP), a synthetic pyrethroid insecticide, is commonly used for controlling agricultural and indoor pests. Therefore, the effects of titanium dioxide NPs (nTiO2 ) on CYP bioconcentration and its effects on the neuronal development in zebrafish were investigated in our study...
March 31, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29655593/investigating-the-potential-of-an-autodissemination-system-for-managing-populations-of-vine-weevil-otiorhynchus-sulcatus-coleoptera-curculionidae-with-entomopathogenic-fungi
#13
Tom W Pope, Gemma Hough, Charlotte Arbona, Harriet Roberts, Jude Bennison, John Buxton, Gill Prince, Dave Chandler
Vine weevil, also known as black vine weevil, (Otiorhynchus sulcatus) is an economically important pest affecting soft fruit and nursery stock in temperate regions. We used laboratory and polytunnel experiments to investigate a novel control system based on autodissemination of spores of an entomopathogenic fungus to populations of adult vine weevils. The fungus was applied as a conidial powder, used on its own or formulated with talc, to a simple plastic refuge for vine weevils. The potential for adult weevils to disseminate the fungus was investigated first in polytunnel experiments using fluorescent powders applied to the refuge in lieu of fungal conidia...
April 12, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29651727/biological-control-of-meloidogyne-javanica-on-tomato-with-dazitol%C3%A2-and-soil-solarization
#14
Lobna Hajji-Hedfi, Emna Rebai, Asma Larayedh, Hajer Regaieg, Najet Horrigue-Raouani
Pot and greenhouse trials were conducted for the management of root-knot nematode, Meloidogyne javanica, infestation in tomato. Growth parameters, gall index, soil, and root nematode populations were measured to assess the effect of a novel bio-pesticide (Dazitol®), made from mustard oil and oleoresin of Capsicum, on plant growth and nematode reproduction. Data generated within the pot experiment showed that the tested bio-pesticide did not improve plant growth, but it reduced significantly root-knot nematode damage resulting in a decrease in gall index and root (91%) and soil (62%) population of M...
April 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29648624/evaluation-of-light-attraction-for-the-stored-product-psocids-liposcelis-entomophila-liposcelis-paeta-and-liposcelis-brunnea
#15
John Diaz-Montano, James F Campbell, Thomas W Phillips, James E Throne
Psocids have become global pests of stored commodities as they can cause considerable economic losses. These insects are difficult to control because they have developed resistance to many chemical insecticides. Therefore, it is crucial to investigate alternative integrated pest management (IPM) approaches, such as the use of light attraction for monitoring and/or controlling psocids. Light attraction has been studied for Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelididae) but not for other psocid species...
April 10, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29644772/-2r-5s-theaspirane-identified-as-the-kairomone-for-the-banana-weevil-cosmopolites-sordidus-from-senesced-leaves-of-the-host-banana-musa-spp
#16
Samson Abagale, Christine Woodcock, Antony Hooper, John Caulfield, David Withall, Keith Chamberlain, Samuel Osafo-Acquaah, Helmut van Emden, Haruna Braimah, John Pickett, Michael A Birkett
The principal active component produced by highly attractive senesced host banana leaves, Musa spp., for the banana weevil, Cosmopolites sordidus, is shown by coupled gas chromatography-electroantennography (GC-EAG), coupled GC-mass spectrometry (GC-MS), chemical synthesis and coupled enantioselective (chiral) GC-EAG to be (2R,5S)-theaspirane. In laboratory behaviour tests, the synthetic compound is as attractive as natural host leaf material and presents a new opportunity for pest control.
April 12, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29644569/evaluation-and-breeding-application-of-six-brown-planthopper-resistance-genes-in-rice-maintainer-line-jin-23b
#17
Haichao Jiang, Jie Hu, Zhi Li, Jia Liu, Guanjun Gao, Qinglu Zhang, Jinghua Xiao, Yuqing He
BACKGROUND: The brown planthopper (BPH), an insect species that feeds on rice plants (Oryza sativa L.), is one of the most destructive insect pests of rice. BPH can be controlled with chemical pesticides, but they are expensive in terms of the cost and environmental hazards. Hence, utilization of resistance genes in resistant varieties is considered as a more economical and eco-friendly effective method for control. RESULTS: In this study, six dominant BPH-resistance genes (Bph3, Bph14, Bph15, Bph18, Bph20 and Bph21) were introduced into an elite indica rice cultivar Jin 23B using the marker-assisted selection (MAS) method of breeding...
April 11, 2018: Rice
https://www.readbyqxmd.com/read/29644097/the-virome-of-drosophila-suzukii-an-invasive-pest-of-soft-fruit
#18
Nathan C Medd, Simon Fellous, Fergal M Waldron, Anne Xuéreb, Madoka Nakai, Jerry V Cross, Darren J Obbard
Drosophila suzukii (Matsumura) is one of the most damaging and costly pests to invade temperate horticultural regions in recent history. Conventional control of this pest is challenging, and an environmentally benign microbial biopesticide is highly desirable. A thorough exploration of the pathogens infecting this pest is not only the first step on the road to the development of an effective biopesticide, but also provides a valuable comparative dataset for the study of viruses in the model family Drosophilidae ...
January 2018: Virus Evolution
https://www.readbyqxmd.com/read/29626726/identification-and-evolution-of-olfactory-genes-in-the-small-poplar-longhorn-beetle-saperda-populnea
#19
Yinliang Wang, Jian Zhang, Qi Chen, Hanbo Zhao, Jiatong Wang, Ming Wen, Jinghui Xi, Bingzhong Ren
Saperda populnea is a serious pest of poplar and willow trees in the Palaearctic region, causing extensive damage to forests and the lumber industry. Until recently, there is no safe and effective chemical method to control this pest due to the lack of sufficient knowledge on the molecular basis of its olfactory genes, moreover, the evolutionary history of the olfactory gene family in subfamily Lamiinae is still fully unknown. Our RNA sequencing of the antennae of S. populnea identified 43 odorant binding proteins (OBPs), 15 chemosensory proteins (CSPs), 56 odorant receptors (ORs) and 24 inotropic receptors (IRs) in S...
March 21, 2018: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/29625217/the-expression-of-three-opsin-genes-and-phototactic-behavior-of-spodoptera-exigua-lepidoptera-noctuidae-evidence-for-visual-function-of-opsin-in-phototaxis
#20
Yan-Jun Liu, Shuo Yan, Zhong-Jian Shen, Zhen Li, Xin-Fang Zhang, Xiao-Ming Liu, Qing-Wen Zhang, Xiao-Xia Liu
Phototaxis in nocturnal moths is widely utilized to control pest populations in practical production. However, as an elusive behavior, phototactic behavior is still not well understood. Determination of whether the opsin gene plays a key role in phototaxis is an interesting topic. This study was conducted to analyze expression levels and biological importance of three opsin genes (Se-uv, Se-bl, and Se-lw) and phototactic behavior of Spodoptera exigua. The three opsin genes exhibited higher expression levels during daytime, excluding Se-bl in females, whose expression tended to increase at night...
April 3, 2018: Insect Biochemistry and Molecular Biology
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