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https://www.readbyqxmd.com/read/29352393/eco-friendly-pheromone-dispensers-a-green-route-to-manage-the-european-grapevine-moth
#1
Andrea Lucchi, Edith Ladurner, Andrea Iodice, Francesco Savino, Renato Ricciardi, Francesca Cosci, Giuseppe Conte, Giovanni Benelli
The development of environmentally sustainable control strategies to fight insect pests is a key challenge nowadays. Pheromone-mediated mating disruption (MD) is based on the release of synthetic sex attractants into a crop, interfering with mate finding of a given pest species. However, a limited number of research items have been published on the optimization of MD strategies against the European grapevine moth, Lobesia botrana, as well as on the use of biodegradable dispensers to reduce waste production in vineyards, despite the high economic importance of this pest...
January 19, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29351741/risk-factors-for-mycobacterium-ulcerans-infection-buruli-ulcer-in-togo-%C3%A2-a-case-control-study-in-zio-and-yoto-districts-of-the-maritime-region
#2
Issaka Maman, Tchadjobo Tchacondo, Abiba Banla Kere, Ebekalisai Piten, Marcus Beissner, Yiragnima Kobara, Komlan Kossi, Kossi Badziklou, Franz Xaver Wiedemann, Komi Amekuse, Gisela Bretzel, Damintoti Simplice Karou
BACKGROUND: Buruli ulcer (BU) is a neglected mycobacterial skin infection caused by Mycobacterium ulcerans. This disease mostly affects poor rural populations, especially in areas with low hygiene standards and sanitation coverage. The objective of this study was to identify these risk factors in the districts of Zio and Yoto of the Maritime Region in Togo. METHODS: We conducted a case-control study in Zio and Yoto, two districts proved BU endemic from November 2014 to May 2015...
January 19, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29351731/a-chelicerate-specific-burst-of-nonclassical-dscam-diversity
#3
Guozheng Cao, Yang Shi, Jian Zhang, Hongru Ma, Shouqing Hou, Haiyang Dong, Weiling Hong, Shuo Chen, Hao Li, Yandan Wu, Pengjuan Guo, Xu Shao, Bingbing Xu, Feng Shi, Yijun Meng, Yongfeng Jin
BACKGROUND: The immunoglobulin (Ig) superfamily receptor Down syndrome cell adhesion molecule (Dscam) gene can generate tens of thousands of isoforms via alternative splicing, which is essential for both nervous and immune systems in insects. However, further information is required to develop a comprehensive view of Dscam diversification across the broad spectrum of Chelicerata clades, a basal branch of arthropods and the second largest group of terrestrial animals. RESULTS: In this study, a genome-wide comprehensive analysis of Dscam genes across Chelicerata species revealed a burst of nonclassical Dscams, categorised into four types-mDscam, sDscamα, sDscamβ, and sDscamγ-based on their size and structure...
January 19, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29351552/in-situ-recording-of-ionic-currents-in-projection-neurons-and-kenyon-cells-in-the-olfactory-pathway-of-the-honeybee
#4
Jan Kropf, Wolfgang Rössler
The honeybee olfactory pathway comprises an intriguing pattern of convergence and divergence: ~60.000 olfactory sensory neurons (OSN) convey olfactory information on ~900 projection neurons (PN) in the antennal lobe (AL). To transmit this information reliably, PNs employ relatively high spiking frequencies with complex patterns. PNs project via a dual olfactory pathway to the mushroom bodies (MB). This pathway comprises the medial (m-ALT) and the lateral antennal lobe tract (l-ALT). PNs from both tracts transmit information from a wide range of similar odors, but with distinct differences in coding properties...
2018: PloS One
https://www.readbyqxmd.com/read/29351362/analysis-of-the-effect-of-cyclophosphamide-and-methotrexate-on-chrysomya-megacephala-diptera-calliphoridae
#5
Ana Letícia Trivia, Carlos José de Carvalho Pinto
Forensic entomotoxicology investigates the effects of chemical substances in the development of scavenger insects and the reflection on estimating the minimum postmortem interval (PMI). To evaluate the impact of the chemotherapeutic drugs cyclophosphamide (CF) and methotrexate (MTX) on the postembryonic development of Chrysomya megacephala, controlled experiments were performed by rearing the larvae on spiked minced beef with different concentrations of these drugs. The results indicated that CF significantly decreased their developmental rate up to 28 h but had no significant effect on larval and adult sizes, survival rate, and sex ratio, whereas MTX decreased larval and adult sizes, survival rate, and there was a deviation in the expected sex ratio toward females in MTX-exposed larvae but had no significant impact on developmental rate...
January 19, 2018: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/29351230/comparison-of-antioxidative-effects-of-insect-tea-and-its-raw-tea-kuding-tea-polyphenols-in-kunming-mice
#6
Xin Zhao, Jia-Le Song, Ruokun Yi, Guijie Li, Peng Sun, Kun-Young Park, Huayi Suo
Kudingcha is a traditional Chinese tea, and insect tea is a special drink produced by the metabolism of insect larvae using the raw Kuding tea. Insect tea polyphenols (ITP) and its raw tea (Kuding tea) polyphenols (KTP) are high-purity polyphenols extracted by centrifuge precipitation. The present study was designed to compare the antioxidative effects of insect tea polyphenols (ITP) and its raw tea (Kuding tea) polyphenols (KTP) on d-galactose-induced oxidation in Kunming (KM) mice. KM mice were treated with ITP (200 mg/kg) and KTP (200 mg/kg) by gavage, and vitamin C (VC, 200 mg/kg) was also used as a positive control by gavage...
January 19, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29351213/cyclin-b3-deficiency-impairs-germline-stem-cell-maintenance-and-its-overexpression-delays-cystoblast-differentiation-in-drosophila-ovary
#7
Dongsheng Chen, Lijuan Zhou, Fuling Sun, Mingzhong Sun, Xiaoqian Tao
It is well known that cyclinB3 (cycB3) plays a key role in the control of cell cycle progression. However, whether cycB3 is involved in stem cell fate determination remains unknown. The Drosophila ovary provides an exclusive model for studying the intrinsic and extrinsic factors that modulate the fate of germline stem cells (GSCs). Here, using this model, we show that DrosophilacycB3 plays a new role in controlling the fate of germline stem cells (GSC). Results from cycB3 genetic analyses demonstrate that cycB3 is intrinsically required for GSC maintenance...
January 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29350763/molecular-allergen-profiling-in-horses-by-microarray-reveals-fag-e-2-from-buckwheat-as-a-frequent-sensitizer
#8
L Einhorn, G Hofstetter, S Brandt, E K Hainisch, I Fukuda, K Kusano, A Scheynius, I Mittermann, Y Resch-Marat, S Vrtala, R Valenta, E Marti, C Rhyner, R Crameri, R Satoh, R Teshima, A Tanaka, H Sato, H Matsuda, I Pali-Schöll, E Jensen-Jarolim
BACKGROUND: Companion animals are also affected by IgE-mediated allergies, but the eliciting molecules are largely unknown. We aimed at refining an allergen microarray to explore sensitization in horses and compare it to the human IgE reactivity profiles. METHODS: Custom-designed allergen microarray was produced on the basis of the IimmunoCAP ISAC technology containing 131 allergens. Sera from 51 horses derived from Europe or Japan were tested for specific IgE reactivity...
January 19, 2018: Allergy
https://www.readbyqxmd.com/read/29350623/exploring-the-role-of-genome-and-structural-ions-in-preventing-viral-capsid-collapse-during-dehydration
#9
Natalia Martín-González, Sofía Guérin, Aritz Durana, Gerardo Martí, Diego M Guérin, Pedro Jose J De Pablo Gomez
Even though viruses evolve mainly in liquid milieu, their horizontal transmission routes often include episodes of dry environment. Along their life cycle, some insect viruses, such as viruses from Dicistroviridae family, withstand dehydrated conditions with yet unknown consequences in their structural stability. Here we use Atomic Force Microscopy to monitor the structural changes of viral particles of Triatoma virus (TrV) after desiccation. Our results demonstrate that TrV capsids preserve their genome inside, conserving their height after exposure to dehydrating conditions, that is in stark contrast with other viruses that expel their genome when desiccated...
January 19, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29350584/developing-standard-operating-procedures-for-gene-drive-research-in-disease-vector-mosquitoes
#10
Zach N Adelman, David Pledger, Kevin M Myles
The biosafety landscape for studies involving gene drive in arthropods is at a critical juncture. Numerous arthropod species represent potential targets for gene-drive-based population suppression or replacement, due to the large number of arthropods that transmit diseases, damage crops, or act as deleterious invasive species. Containment measures for gene drive research in arthropods have been discussed in the literature, but the importance of developing safe and effective standard operating procedures (SOPs) for these types of experiments has not been adequately addressed...
January 19, 2018: Pathogens and Global Health
https://www.readbyqxmd.com/read/29350452/anatomical-and-phenological-implications-between-schinus-polygama-cav-cabrera-anacardiaceae-and-the-galling-insect-calophya-rubra-blanchard-hemiptera-psylloidea
#11
Lubia M Guedes, Narciso Aguilera, Bruno G Ferreira, José Becerra, Victor Hernández, Rosy Ms Isaias
The success of galling insects could be determined by synchronization with host plant phenology and climatic conditions, ensuring suitable oviposition sites for gall induction and food resources for their survivorship. The anatomical, histochemical and phenological synchronization strategies between Calophya rubra (Blanchard) (Hemiptera: Psylloidea) and its host, the evergreen plant Schinus polygama (Cav.) (Cabrera) (Anacardiaceae), in the Mediterranean climate of southern Chile was herein evaluated, and was compared to that of the congeneric C...
January 19, 2018: Plant Biology
https://www.readbyqxmd.com/read/29350346/chemical-characterization-of-young-virgin-queens-and-mated-egg-laying-queens-in-the-ant-cataglyphis-cursor-random-forest-classification-analysis-for-multivariate-datasets
#12
Thibaud Monnin, Florence Helft, Chloé Leroy, Patrizia d'Ettorre, Claudie Doums
Social insects are well known for their extremely rich chemical communication, yet their sex pheromones remain poorly studied. In the thermophilic and thelytokous ant, Cataglyphis cursor, we analyzed the cuticular hydrocarbon profiles and Dufour's gland contents of queens of different age and reproductive status (sexually immature gynes, sexually mature gynes, mated and egg-laying queens) and of workers. Random forest classification analyses showed that the four groups of individuals were well separated for both chemical sources, except mature gynes that clustered with queens for cuticular hydrocarbons and with immature gynes for Dufour's gland secretions...
January 19, 2018: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/29350147/fly-reservoir-associated-with-wohlfahrtiimonas-bacteremia-in-a-human
#13
Jesse H Bonwitt, Michael Tran, Elizabeth A Dykstra, Kaye Eckmann, Melissa E Bell, Michael Leadon, Melissa Sixberry, William A Glover
Wohlfahrtiimonas species bacteria were isolated from the bloodstream of a patient with septicemia and wound myiasis. Environmental investigations identified a Wohlfahrtiimonas sp. among insects in the Americas and in a previously undescribed vector, the green bottle fly (Lucilia sericata). The isolates possibly represent a new species within the genus Wohlfahrtiimonas.
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29349295/a-triassic-jurassic-window-into-the-evolution-of-lepidoptera
#14
Timo J B van Eldijk, Torsten Wappler, Paul K Strother, Carolien M H van der Weijst, Hossein Rajaei, Henk Visscher, Bas van de Schootbrugge
On the basis of an assemblage of fossilized wing scales recovered from latest Triassic and earliest Jurassic sediments from northern Germany, we provide the earliest evidence for Lepidoptera (moths and butterflies). The diverse scales confirm a (Late) Triassic radiation of lepidopteran lineages, including the divergence of the Glossata, the clade that comprises the vast multitude of extant moths and butterflies that have a sucking proboscis. The microfossils extend the minimum calibrated age of glossatan moths by ca...
January 2018: Science Advances
https://www.readbyqxmd.com/read/29348592/stingless-bee-larvae-require-fungal-steroid-to-pupate
#15
Camila R Paludo, Cristiano Menezes, Eduardo A Silva-Junior, Ayrton Vollet-Neto, Andres Andrade-Dominguez, Gleb Pishchany, Lily Khadempour, Fabio S do Nascimento, Cameron R Currie, Roberto Kolter, Jon Clardy, Mônica T Pupo
The larval stage of the stingless bee Scaptotrigona depilis must consume a specific brood cell fungus in order to continue development. Here we show that this fungus is a member of the genus Zygosaccharomyces and provides essential steroid precursors to the developing bee. Insect pupation requires ecdysteroid hormones, and as insects cannot synthesize sterols de novo, they must obtain steroids in their diet. Larval in vitro culturing assays demonstrated that consuming ergosterol recapitulates the developmental effects on S...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348510/genome-and-secretome-analysis-of-pochonia-chlamydosporia-provide-new-insight-into-egg-parasitic-mechanisms
#16
Runmao Lin, Feifei Qin, Baoming Shen, Qianqian Shi, Chichuan Liu, Xi Zhang, Yang Jiao, Jun Lu, Yaoyao Gao, Marta Suarez-Fernandez, Federico Lopez-Moya, Luis Vicente Lopez-Llorca, Gang Wang, Zhenchuan Mao, Jian Ling, Yuhong Yang, Xinyue Cheng, Bingyan Xie
Pochonia chlamydosporia infects eggs and females of economically important plant-parasitic nematodes. The fungal isolates parasitizing different nematodes are genetically distinct. To understand their intraspecific genetic differentiation, parasitic mechanisms, and adaptive evolution, we assembled seven putative chromosomes of P. chlamydosporia strain 170 isolated from root-knot nematode eggs (~44 Mb, including 7.19% of transposable elements) and compared them with the genome of the strain 123 (~41 Mb) isolated from cereal cyst nematode...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348442/a-neutral-ceramidase-nlncdase-is-involved-in-the-stress-responses-of-brown-planthopper-nilaparvata-lugens-st%C3%A3-l
#17
Xiao-Xiao Shi, Yuan-Jie Huang, Mahfuj-Ara Begum, Mu-Fei Zhu, Fei-Qiang Li, Min-Jing Zhang, Wen-Wu Zhou, Cungui Mao, Zeng-Rong Zhu
Ceramidases (CDases) are vital enzymes involved in the biosynthesis of sphingolipids, which are essential components of eukaryotic membranes. The function of these enzymes in insects, however, is poorly understood. We identified a neutral ceramidase (NlnCDase) from the brown planthopper, Nilaparvata lugens, one of the most destructive hemipteran pests of rice. The C12-ceramide was the most preferred substrate for the NlnCDase enzyme. The activity of the NlnCDase enzyme was highest in the neutral-pH range (pH 6...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29348295/tuning%C3%A2-crispr-cas9-gene-drives-in-saccharomyces-cerevisiae
#18
Emily Roggenkamp, Rachael M Giersch, Madison N Schrock, Emily Turnquist, Megan Halloran, Gregory C Finnigan
Control of biological populations is an ongoing challenge in many fields including agriculture, biodiversity, ecological preservation, pest control, and the spread of disease. In some cases, such as insects that harbor human pathogens (e.g. malaria), elimination or reduction of a small number of species would have a dramatic impact across the globe. Given the recent discovery and development of the CRISPR/Cas9 gene editing technology, a unique arrangement of this system-a nuclease based "gene drive"-allows for the Super-Mendelian spread and forced propagation of a genetic element through a population...
January 18, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29347977/expansion-of-cytochrome-p450-and-cathepsin-genes-in-the-generalist-herbivore-brown-marmorated-stink-bug
#19
Raman Bansal, Andy Michel
BACKGROUND: The brown marmorated stink bug (Halyomorpha halys) is an invasive pest in North America which causes severe economic losses on tree fruits, ornamentals, vegetables, and field crops. The H. halys is an extreme generalist and this feeding behaviour may have been a major contributor behind its establishment and successful adaptation in invasive habitats of North America. To develop an understanding into the mechanism of H. halys' generalist herbivory, here we specifically focused on genes putatively facilitating its adaptation on diverse host plants...
January 18, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29347954/a-reverse-vaccinology-approach-to-the-identification-and-characterization-of-ctenocephalides-felis-candidate-protective-antigens-for-the-control-of-cat-flea-infestations
#20
Marinela Contreras, Margarita Villar, Sara Artigas-Jerónimo, Lidiia Kornieieva, Sergіі Mуtrofanov, José de la Fuente
BACKGROUND: Despite the abundance of the domestic cat flea, Ctenocephalides felis (Bouché, 1835) and disease risks associated with them, flea control is difficult and requires the development of new control interventions such as vaccines. In this study, a reverse vaccinology approach was designed to achieve a rational selection of cat flea candidate protective antigens. METHODS: Based on transcriptomics and proteomics data from unfed adult fleas it was possible to select more specific candidate protective antigens based on highly represented and functionally relevant proteins present in the predicted exoproteome...
January 18, 2018: Parasites & Vectors
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