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https://www.readbyqxmd.com/read/28765729/new-species-records-of-culicoides-biting-midges-diptera-ceratopogonidae-for-the-state-of-rond%C3%A3-nia-in-brazilian-amazon
#1
Luis Paulo Costa Carvalho, Emanuelle de Sousa Farias, Luiz Herman Soares Gil, Felipe Arley Costa Pessoa, Jansen Fernandes Medeiros
BACKGROUND: Culicoides biting midges are small insects that are proven vectors of pathogens that cause disease in animals and humans. There are 1,368 species of Culicoides in the world, including 149 species in Brazil and 122 species in the Brazilian Amazon Basin. This study documents specimens that were collected between 2013 and 2015 in the municipalities of Alvorada d'Oeste, Buritis, Cacoal, Costa Marques, Espigão d'Oeste, Guajará-Mirim, Pimenta Bueno, Porto Velho and São Francisco Guaporé...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28763029/an-opto-electronic-sensor-for-detecting-soil-microarthropods-and-estimating-their-size-in-field-conditions
#2
Csongor I Gedeon, Norbert Flórián, Péter Liszli, Beáta Hambek-Oláh, Oxána Bánszegi, Judit Schellenberger, Miklós Dombos
Methods to estimate density of soil-dwelling arthropods efficiently, accurately and continuously are critical for investigating soil biological activity and evaluating soil management practices. Soil-dwelling arthropods are currently monitored manually. This method is invasive, and time- and labor-consuming. Here we describe an infrared opto-electronic sensor for detection of soil microarthropods in the size range of 0.4-10 mm. The sensor is built in a novel microarthropod trap designed for field conditions...
August 1, 2017: Sensors
https://www.readbyqxmd.com/read/28748632/first-molecular-identification-of-the-vertebrate-hosts-of-culicoides-imicola-in-europe-and-a-review-of-its-blood-feeding-patterns-worldwide-implications-for-the-transmission-of-bluetongue-disease-and-african-horse-sickness
#3
J Martínez-DE LA Puente, J Navarro, M Ferraguti, R Soriguer, J Figuerola
Culicoides (Diptera: Ceratopogonidae) are vectors of pathogens that affect wildlife, livestock and, occasionally, humans. Culicoides imicola (Kieffer, 1913) is considered to be the main vector of the pathogens that cause bluetongue disease (BT) and African horse sickness (AHS) in southern Europe. The study of blood-feeding patterns in Culicoides is an essential step towards understanding the epidemiology of these pathogens. Molecular tools that increase the accuracy and sensitivity of traditional methods have been developed to identify the hosts of potential insect vectors...
July 27, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28747507/roles-of-cellular-nsf-protein-in-entry-and-nuclear-egress-of-budded-virions-of-autographa-californica-multiple-nucleopolyhedrovirus
#4
Ya Guo, Qi Yue, Jinli Gao, Zhe Wang, Yun-Ru Chen, Gary W Blissard, Tong-Xian Liu, Zhaofei Li
In eukaryotic cells, the soluble N-ethylmaleimide-sensitive factor (NSF) attachment protein receptor (SNARE) proteins comprise the minimal machinery that triggers fusion of transport vesicles with their target membranes. Comparative studies revealed that genes encoding the components of the SNARE system are highly conserved in yeast, insect, and human genomes. Upon infection of insect cells by the virus AcMNPV, the transcript levels of most SNARE genes were initially up-regulated. We found that overexpression of dominant-negative (DN) forms of NSF or knock-down of the expression of NSF, the key regulator of the SNARE system, significantly affected the infectious AcMNPV production...
July 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28741611/an-antimicrobial-peptide-that-inhibits-translation-by-trapping-release-factors-on-the-ribosome
#5
Tanja Florin, Cristina Maracci, Michael Graf, Prajwal Karki, Dorota Klepacki, Otto Berninghausen, Roland Beckmann, Nora Vázquez-Laslop, Daniel N Wilson, Marina V Rodnina, Alexander S Mankin
Many antibiotics stop bacterial growth by inhibiting different steps of protein synthesis. However, no specific inhibitors of translation termination are known. Proline-rich antimicrobial peptides, a component of the antibacterial defense system of multicellular organisms, interfere with bacterial growth by inhibiting translation. Here we show that Api137, a derivative of the insect-produced antimicrobial peptide apidaecin, arrests terminating ribosomes using a unique mechanism of action. Api137 binds to the Escherichia coli ribosome and traps release factor (RF) RF1 or RF2 subsequent to the release of the nascent polypeptide chain...
July 24, 2017: Nature Structural & Molecular Biology
https://www.readbyqxmd.com/read/28741205/one-more-step-toward-a-push-pull-strategy-combining-both-a-trap-crop-and-plant-volatile-organic-compounds-against-the-cabbage-root-fly-delia-radicum
#6
Fabrice Lamy, Sébastien Dugravot, Anne Marie Cortesero, Valérie Chaminade, Vincent Faloya, Denis Poinsot
The "push-pull" strategy aims at manipulating insect pest behavior using a combination of attractive and repulsive stimuli using either plants derived volatile organic compounds or insect host plant preferences. In a field experiment using broccoli as a crop, we combined in a "push-pull" context the oviposition deterrent effect of dimethyl disulfide and the attractive effect of a Chinese cabbage strip enhanced with Z-3-hexenyl-acetate. The push component dimethyl disulfide reduced Delia radicum L. (Diptera: Anthomyiidae) oviposition on broccoli by nearly 30%, and applying Z-3-hexenyl-acetate in the pull component of Chinese cabbage increased it by 40%...
July 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28727249/dynamics-of-amino-acid-redistribution-in-the-carnivorous-venus-flytrap-dionaea-muscipula-after-digestion-of-13-c-15-n-labeled-prey
#7
Jörg Kruse, Peng Gao, Monika Eibelmeier, Saleh Alfarraj, Heinz Rennenberg
Amino acids represent an important component in the diet of the Venus flytrap (Dionaea muscipula), and supply plants with much needed nitrogen resources upon capture of insect prey. Little is known about the significance of prey-derived carbon backbones of amino acids for the success of Dionaea's carnivorous life-style. The present study tracked changes in plant amino acid pools and their δ(13) C- and δ(15) N-signatures, after half of all traps per plant had been fed with contrasting amounts of double-labeled insect powder (0, 5, 10 and 20 mg per trap)...
July 20, 2017: Plant Biology
https://www.readbyqxmd.com/read/28721608/a-new-light-trap-model-as-an-alternative-for-controlling-pests-in-eucalyptus-plantations
#8
R G Mafia, E B Loureiro, J B Silva, J A C Simões, T G Zarpelon, N S Bezerra Junior, M B Damacena
Eucalyptus plantations can be affected by species of defoliating caterpillars. The integrated management of this group primarily involves a monitoring system, natural enemies, and biological products. Alternative control methods, including the use of conventional light traps, have not been adopted, mostly because of their low efficiency. Therefore, a more efficient light trap model was developed. The new model allowed the capture of 3.6 times as many insects as the conventional model, with a 261% gain in control efficiency...
July 18, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28713403/time-dependent-trapping-of-pollinators-driven-by-the-alignment-of-floral-phenology-with-insect-circadian-rhythms
#9
Jenny Y Y Lau, Xing Guo, Chun-Chiu Pang, Chin Cheung Tang, Daniel C Thomas, Richard M K Saunders
Several evolutionary lineages in the early divergent angiosperm family Annonaceae possess flowers with a distinctive pollinator trapping mechanism, in which floral phenological events are very precisely timed in relation with pollinator activity patterns. This contrasts with previously described angiosperm pollinator traps, which predominantly function as pitfall traps. We assess the circadian rhythms of pollinators independently of their interactions with flowers, and correlate these data with detailed assessments of floral phenology...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28710446/the-movement-of-small-insects-in-the-convective-boundary-layer-linking-patterns-to-processes
#10
Charlotte E Wainwright, Phillip M Stepanian, Don R Reynolds, Andy M Reynolds
In fine warm weather, the daytime convective atmosphere over land areas is full of small migrant insects, among them serious pests (e.g. some species of aphid), but also many beneficial species (e.g. natural enemies of pests). For many years intensive aerial trapping studies were the only way of determining the density profiles of these small insects, and for taxon-specific studies trapping is still necessary. However, if we wish to determine generic behavioural responses to air movements shown by small day-migrating insects as a whole, the combination of millimetre-wavelength 'cloud radars' and Doppler lidar now provides virtually ideal instrumentation...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28692174/effects-of-pyriproxifen-on-wild-populations-of-the-house-fly-musca-domestica-and-compatibility-with-its-principal-parasitoids
#11
Haim Biale, Christopher J Geden, Elad Chiel
BACKGROUND: The house fly, Musca domestica L., is an important pest of animal agriculture. Effective fly management requires integration of manure management, mass trapping, biological control, and selective insecticide use. Insecticidal control of house flies is difficult due to the rapidity of resistance development, yet the insect growth regulator pyriproxyfen (PPF) is one of few insecticides that may still be effective. Here, we tested the susceptibility of four wild house fly populations in the USA and in Israel to PPF, as well as the effect of PPF on house fly parasitoids of the genera Muscidifurax and Spalangia...
July 10, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28689277/identification-of-the-aggregation-sex-pheromone-produced-by-male-monochamus-saltuarius-a-major-insect-vector-of-the-pine-wood-nematode
#12
Hyo-Rim Lee, Sung-Chan Lee, Dong Ha Lee, Won-Sil Choi, Chan-Sik Jung, Jae-Ho Jeon, Jeong-Eun Kim, Il-Kwon Park
In this study, we isolated and identified an aggregation-sex pheromone from Monochamus saltuarius, the major insect vector of the pine wood nematode in Korea. Adult males of M. saltuarius produce 2-undecyloxy-1-ethanol, which is known as an aggregation-sex pheromone in other Monochamus species. We performed field experiments to determine the attractiveness of the pheromone and other synergists. More M. saltuarius adult beetles were attracted to traps baited with the pheromone than to unbaited traps. Ethanol and (-)-α-pinene interacted synergistically with the pheromone...
July 8, 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28672808/ecosystem-based-incorporation-of-nectar-producing-plants-for-stink-bug-parasitoids
#13
REVIEW
Glynn Tillman
Adult parasitoids of pest insects rely on floral resources for survival and reproduction, but can be food-deprived in intensively managed agricultural systems lacking these resources. Stink bugs are serious pests for crops in southwest Georgia. Provisioning nectar-producing plants for parasitoids of stink bugs potentially can enhance biocontrol of these pests. Knowledge of spatial and temporal availability and distribution of stink bugs in host plants is necessary for appropriate timing and placement of flowering plants in agroecosystems...
June 24, 2017: Insects
https://www.readbyqxmd.com/read/28647127/infrared-light-detection-by-the-haller-s-organ-of-adult-american-dog-ticks-dermacentor-variabilis-ixodida-ixodidae
#14
Robert D Mitchell, Jiwei Zhu, Ann L Carr, Anirudh Dhammi, Grayson Cave, Daniel E Sonenshine, R Michael Roe
The Haller's organ (HO), unique to ticks and mites, is found only on the first tarsus of the front pair of legs. The organ has an unusual morphology consisting of an anterior pit (AP) with protruding sensilla and a posterior capsule (Cp). The current thinking is that the HO's main function is chemosensation analogous to the insect antennae, but the functionality of its atypical structure (exclusive to the Acari) is unexplained. We provide the first evidence that the HO allows the American dog tick, Dermacentor variabilis, to respond to infrared (IR) light...
August 2017: Ticks and Tick-borne Diseases
https://www.readbyqxmd.com/read/28640580/a-bioinspired-alginate-gum-arabic-hydrogel-with-micro-nanoscale-structures-for-controlled-drug-release-in-chronic-wound-healing
#15
Mi Li, Haichang Li, Xiangguang Li, Hua Zhu, Zihui Xu, Lianqing Liu, Jianjie Ma, Mingjun Zhang
Biopolymeric hydrogels have drawn increasing research interest in biomaterials due to their tunable physical and chemical properties for both creating bioactive cellular microenvironment and serving as sustainable therapeutic reagents. Inspired by a naturally occurring hydrogel secreted from the carnivorous Sundew plant for trapping insects, here we have developed a bioinspired hydrogel to deliver mitsugumin 53 (MG53), an important protein in cell membrane repair, for chronic wound healing. Both chemical compositions and micro-/nanomorphological properties inherent from the natural Sundew hydrogel were mimicked using sodium alginate and gum arabic with calcium ion-mediated cross-linking...
July 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28612699/coffee-berry-borer-in-conilon-coffee-in-the-brazilian-cerrado-an-ancient-pest-in-a-new-environment
#16
C M Oliveira, M J Santos, R F Amabile, M R Frizzas, G F Bartholo
The aim of this study was to verify the occurrence of the coffee berry borer, Hypothenemus hampei (Ferrari), and to evaluate the population fluctuation of the pest in the Brazilian Cerrado (Federal District). The study was conducted, between November 2014 and October 2015, at Embrapa Cerrados (Planaltina/DF, Brazil) in an irrigated conilon coffee production area. In November 2014, 120 samples (ten berries/sample) were collected from berries that had fallen on the ground from the previous harvest. Between November 2014 and October 2015, insects were collected weekly, using traps (polyethylene terephthalate bottles) baited with ethyl alcohol (98 GL), ethyl alcohol (98 GL) with coffee powder, or molasses...
June 14, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28610183/melittofauna-and-other-potential-pollinators-in-wetland-and-uplands-in-south-central-nebraska-insecta-apoidea
#17
Cynthia N Park, Lisa M Overall, Loren M Smith, Ted Lagrange, Scott McMurry
Our objective was to document potential wild pollinating insects in south central Nebraska. This intensively cultivated region is known as the Rainwater Basin and contains some of the most endangered wetland systems in North America. We used blue vane traps to passively collect insects and insect nets to actively collect on flowering plants from April through October in 2014 and 2015. Habitat types included playa wetlands, adjacent mixed and tallgrass prairies, and agricultural fields. Over 112,000 insects were collected; Hymenoptera represented 78% of the total, and the families Apidae and Halictidae comprised 99% of the total melittofauna...
March 10, 2017: Zootaxa
https://www.readbyqxmd.com/read/28605128/tiny-insects-against-the-weather-flight-and-foraging-patterns-of-frankliniella-schultzei-thripidae-not-altered-by-onset-of-rainfall
#18
Lachlan C Jones, Brodie J Foster, Michelle A Rafter, Gimme H Walter
To survive in nature, organisms may need to take direct action to mitigate specific dangers from their environmental surroundings. Tiny flying insects are thought to be at particular risk from rainfall that would be of negligible concern to larger animals. The study species Frankliniella schultzei is a thrips that inhabits flowers and feeds mostly on petal tissue and pollen. While found to respond in the laboratory to decreases in atmospheric pressure associated with cyclonic conditions (rather than merely heavy rainfall), their responses to conditions preceding rainfall have not been tested in the field...
June 12, 2017: Insect Science
https://www.readbyqxmd.com/read/28601940/the-male-produced-aggregation-pheromone-of-a-strawberry-sap-beetle-lobiopa-insularis-coleoptera-nitidulidae
#19
Antonioni A C Moliterno, Camila B C Martins, Daiane Szczerbowski, Maria Aparecida C Zawadneak, Paulo H G Zarbin
The nitidulid beetle Lobiopa insularis is an important pest of strawberry crops in the United States and Brazil. Both larvae and adults feed on ripe strawberries, causing 20-70% loss in production during serious infestations. Aiming at the development of efficient, clean, and highly specific pest management systems, semiochemicals, especially pheromones, are particularly useful. Analyses of the extracts of both males and females obtained from aeration of live beetles showed the presence of three male specific compounds, 2-nonanone, 2-undecanone, and 2-undecanol (in an enantiomeric ratio of S:R = 3...
June 2017: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/28593838/attractiveness-of-black-and-white-modified-shannon-traps-to-phlebotomine-sandflies-diptera-psychodidae-in-the-brazilian-amazon-basin-an-area-of-intense-transmission-of-american-cutaneous-leishmaniasis
#20
Andreia Fernandes Brilhante, Márcia Moreira de Ávila, Jailson Ferreira de Souza, Antônio Ralph Medeiros-Sousa, Priscila Bassan Sábio, Marcia Bicudo de Paula, Rodrigo Espindola Godoy, Leonardo Augusto Kohara Melchior, Vânia Lúcia Brandão Nunes, Cristiane de Oliveira Cardoso, Eunice Aparecida Bianchi Galati
In the Amazon region the phlebotomine fauna is considered one of the most diverse in the world. The use of Shannon traps may provide information on the anthropophily of the species and improve the traps' performance in terms of diversity and quantity of insects collected when white and black colored traps are used together. This study sought to verify the attractiveness of the traps to the phlebotomine species of the Brazilian Amazon basin using Shannon traps under these conditions. The insects were collected using two Shannon traps installed side by side, one white and the other black, in a primary forest area of the municipality of Xapuri, Acre, Brazil...
2017: Parasite: Journal de la Société Française de Parasitologie
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