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https://www.readbyqxmd.com/read/29049958/sublethal-exposure-to-deltamethrin-reduces-the-abilities-of-giant-water-bugs-to-prey-upon-aedes-aegypti-larvae
#1
Wilson R Valbon, Franciele M Cruz, Gabryele S Ramos, Hudson V V Tomé, Eugênio E Oliveira
Freshwater ecosystems provide environmental conditions for many arthropod species, including pests like mosquitoes and beneficial insects. Giant water bugs, Belostoma anurum (Hemiptera: Belostomatidae), are aquatic insects that provide biological control of mosquitoes and small vertebrates in freshwater environments. However, the application of insecticides aiming to control mosquitoes can lead to insecticide exposures of aquatic predators that can result in their death or significant reductions in their behavioral abilities...
October 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/29049279/knowledge-attitudes-and-practices-related-to-ebola-virus-disease-at-the-end-of-a-national-epidemic-guinea-august-2015
#2
Mohamed F Jalloh, Susan J Robinson, Jamaica Corker, Wenshu Li, Kathleen Irwin, Alpha M Barry, Paulyne Ngalame Ntuba, Alpha A Diallo, Mohammad B Jalloh, James Nyuma, Musa Sellu, Amanda VanSteelandt, Megan Ramsden, LaRee Tracy, Pratima L Raghunathan, John T Redd, Lise Martel, Barbara Marston, Rebecca Bunnell
Health communication and social mobilization efforts to improve the public's knowledge, attitudes, and practices (KAP) regarding Ebola virus disease (Ebola) were important in controlling the 2014-2016 Ebola epidemic in Guinea (1), which resulted in 3,814 reported Ebola cases and 2,544 deaths.* Most Ebola cases in Guinea resulted from the washing and touching of persons and corpses infected with Ebola without adequate infection control precautions at home, at funerals, and in health facilities (2,3). As the 18-month epidemic waned in August 2015, Ebola KAP were assessed in a survey among residents of Guinea recruited through multistage cluster sampling procedures in the nation's eight administrative regions (Boké, Conakry, Faranah, Kankan, Kindia, Labé, Mamou, and Nzérékoré)...
October 20, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29048583/comparative-efficacy-of-commercial-mosquito-coils-against-aedes-aegypti-diptera-culicidae-in-malaysia-a-nationwide-report
#3
A C Chin, C D Chen, V L Low, H L Lee, A A Azidah, K W Lau, M Sofian-Azirun
This study was conducted using the glass chamber method to determine the susceptibility status of the dengue vector, Aedes aegypti (L.) from 11 states in Malaysia to commercial mosquito coils containing four different active ingredients, namely metofluthrin, d-allethrin, d-trans allethrin, and prallethrin. Aedes aegypti exhibited various knockdown rates, ranging from 14.44% to 100.00%, 0.00% to 61.67%, 0.00% to 90.00%, and 0.00% to 13.33% for metofluthrin, d-allethrin, d-trans allethrin, and prallethrin, respectively...
October 1, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29048274/isolation-and-characterization-of-a-new-iflavirus-from-armigeres-spp-mosquitoes-in-the-philippines
#4
Daisuke Kobayashi, Haruhiko Isawa, Ryosuke Fujita, Katsunori Murota, Kentaro Itokawa, Yukiko Higa, Yukie Katayama, Toshinori Sasaki, Tetsuya Mizutani, Shiroh Iwanaga, Nobuo Ohta, Arlene Garcia-Bertuso, Kyoko Sawabe
During an entomological surveillance for arthropod-borne viruses in the Philippines, we isolated a previously unrecognized virus from female Armigeres spp. mosquitoes. Whole-genome sequencing, genetic characterization and phylogenetic analysis revealed that the isolated virus, designated Armigeres iflavirus (ArIFV), is a novel member of the iflaviruses (genus Iflavirus, family Iflaviridae) and phylogenetically related to Moku virus, Hubei odonate virus 4, slow bee paralysis virus and Graminella nigrifrons virus 1...
October 19, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/29047412/wetland-characteristics-linked-to-broad-scale-patterns-in-culiseta-melanura-abundance-and-eastern-equine-encephalitis-virus-infection
#5
Nicholas K Skaff, Philip M Armstrong, Theodore G Andreadis, Kendra S Cheruvelil
BACKGROUND: Eastern equine encephalitis virus (EEEV) is an expanding mosquito-borne threat to humans and domestic animal populations in the northeastern United States. Outbreaks of EEEV are challenging to predict due to spatial and temporal uncertainty in the abundance and viral infection of Cs. melanura, the principal enzootic vector. EEEV activity may be closely linked to wetlands because they provide essential habitat for mosquito vectors and avian reservoir hosts. However, wetlands are not homogeneous and can vary by vegetation, connectivity, size, and inundation patterns...
October 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29046610/molecular-epidemiology-of-mosquitoes-for-the-transmission-of-forest-malaria-in-south-central-vietnam
#6
REVIEW
Yoshimasa Maeno
Human infection caused by non-human primate malarial parasites, such as Plasmodium knowlesi and Plasmodium cynomolgi, occurs naturally in Southeast Asian countries, including Vietnam. Members of the Anopheles dirus species complex are known to be important vectors of human malarial parasites in the forested areas of southern and central Vietnam, including those in Khanh Phu commune and Khanh Hoa Province. Recent molecular epidemiological studies in Vietnam have reported cases of co-infection with Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, and P...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/29046418/escaping-blood-fed-malaria-mosquitoes-minimize-tactile-detection-without-compromising-on-take-off-speed
#7
F T Muijres, S W Chang, W G van Veen, J Spitzen, B T Biemans, M A R Koehl, R Dudley
To escape after taking a blood meal, a mosquito must exert forces sufficiently high to take off when carrying a load roughly equal to its body weight, while simultaneously avoiding detection by minimizing tactile signals exerted on the host's skin. We studied this trade-off between escape speed and stealth in the malaria mosquito Anopheles coluzzii using 3D motion analysis of high-speed stereoscopic videos of mosquito take-offs and aerodynamic modeling. We found that during the push-off phase, mosquitoes enhanced take-off speed using aerodynamic forces generated by the beating wings in addition to leg-based push-off forces, whereby wing forces contributed 61% of the total push-off force...
October 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29045737/comparative-analysis-of-gut-microbiota-of-culex-restuans-diptera-culicidae-females-from-different-parents
#8
Ephantus J Muturi, Jose L Ramirez, Alejandro P Rooney, Chang-Hyun Kim, Brenda Beerntsen
The potential for gut microbiota to impede or enhance pathogen transmission is well-documented but the factors that shape this microbiota in mosquito vectors are poorly understood. We characterized and compared the gut microbiota of adult females of Culex restuans (Theobald; Diptera: Culicidae) from different parents. Cx. restuans larvae from nine field-collected egg rafts were reared on a common diet and gut microbiota of newly emerged adult females characterized by MiSeq sequencing of the V4 hypervariable region of the 16S rRNA gene...
October 17, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/29045484/semi-field-assessment-of-the-bg-malaria-trap-for-monitoring-the-african-malaria-vector-anopheles-arabiensis
#9
Elis P A Batista, Halfan S Ngowo, Mercy Opiyo, Gasper K Shubis, Felician C Meza, Fredros O Okumu, Alvaro E Eiras
Odour-baited technologies are increasingly considered for effective monitoring of mosquito populations and for the evaluation of vector control interventions. The BG-Malaria trap (BGM), which is an upside-down variant of the widely used BG-Sentinel trap (BGS), has been demonstrated to be effective to sample the Brazilian malaria vector, Anopheles darlingi. We evaluated the BGM as an improved method for sampling the African malaria vectors, Anopheles arabiensis. Experiments were conducted inside a large semi-field cage to compare trapping efficiencies of BGM and BGS traps, both baited with the synthetic attractant, Ifakara blend, supplemented with CO2...
2017: PloS One
https://www.readbyqxmd.com/read/29045479/perception-of-climate-change-in-patients-with-chronic-lung-disease
#10
Jeremias Götschke, Pontus Mertsch, Michael Bischof, Nikolaus Kneidinger, Sandhya Matthes, Ellen D Renner, Konrad Schultz, Claudia Traidl-Hoffmann, Hans-Werner Duchna, Jürgen Behr, Jürgen Schmude, Rudolf M Huber, Katrin Milger
BACKGROUND: Climate change affects human health. The respective consequences are predicted to increase in the future. Patients with chronic lung disease are particularly vulnerable to the involved environmental alterations. However, their subjective perception and reactions to these alterations remain unknown. METHODS: In this pilot study, we surveyed 172 adult patients who underwent pulmonary rehabilitation and 832 adult tourists without lung disease in the alpine region about their perception of being affected by climate change and their potential reaction to specific consequences...
2017: PloS One
https://www.readbyqxmd.com/read/29045401/genome-wide-snps-reveal-the-drivers-of-gene-flow-in-an-urban-population-of-the-asian-tiger-mosquito-aedes-albopictus
#11
Thomas L Schmidt, Gordana Rašić, Dongjing Zhang, Xiaoying Zheng, Zhiyong Xi, Ary A Hoffmann
Aedes albopictus is a highly invasive disease vector with an expanding worldwide distribution. Genetic assays using low to medium resolution markers have found little evidence of spatial genetic structure even at broad geographic scales, suggesting frequent passive movement along human transportation networks. Here we analysed genetic structure of Aedes albopictus collected from 12 sample sites in Guangzhou, China, using thousands of genome-wide single nucleotide polymorphisms (SNPs). We found evidence for passive gene flow, with distance from shipping terminals being the strongest predictor of genetic distance among mosquitoes...
October 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29044858/pharmacological-and-chemical-features-of-nepeta-l-genus-its-importance-as-a-therapeutic-agent
#12
REVIEW
Ipek Süntar, Seyed Mohammad Nabavi, Davide Barreca, Nicolas Fischer, Thomas Efferth
Medicinal plants have always had great value for the human population due to their valuable constituents and potential bioactivities. The objective of this review is to present an updated overview of an important medicinal plant genus Nepeta L., from the family Lamiaceae, revealing its traditional utilization, biological activity, phytoconstituents, and mechanisms of action. For this purpose, a literature survey was carried out by using SciFinder, ScienceDirect, Scopus, PubMed, and Web of Science followed by a revision of the bibliographies of the related articles...
October 18, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/29044370/the-ecology-and-epidemiology-of-ross-river-and-murray-valley-encephalitis-viruses-in-western-australia-examples-of-one-health-in-action
#13
John S Mackenzie, Michael D A Lindsay, David W Smith, Allison Imrie
Arboviruses are maintained and transmitted through an alternating biological cycle in arthropods and vertebrates, with largely incidental disease in humans and animals. As such, they provide excellent examples of One Health, as their health impact is inextricably linked to their vertebrate hosts, their arthropod vectors and the environment. Prevention and control requires a comprehensive understanding of these interactions, and how they may be effectively and safely modified. This review concentrates on human disease due to Ross River and Murray Valley encephalitis viruses, the two major arboviral pathogens in Australia...
June 1, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29044195/lack-of-evidence-for-zika-virus-transmission-by-culex-mosquitoes
#14
Christopher M Roundy, Sasha R Azar, Aaron C Brault, Gregory D Ebel, Anna-Bella Failloux, Ildefonso Fernandez-Salas, Uriel Kitron, Laura D Kramer, Ricardo Lourenço-de-Oliveira, Jorge E Osorio, Igor D Paploski, Gonzalo M Vazquez-Prokopec, Guilherme S Ribeiro, Scott A Ritchie, Laura B Tauro, Nikos Vasilakis, Scott C Weaver
No abstract text is available yet for this article.
October 18, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29044194/response-to-lack-of-evidence-for-zika-virus-transmission-by-culex-mosquitoes
#15
Constância Ayres, Duschinka Guedes, Marcelo Paiva, Mariana Donato, Priscilla Barbosa, Larissa Krokovsky, Sura Rocha, Karina Saraiva, Mônica Crespo, Tatiana Rezende, Gabriel Wallau, Rosângela Barbosa, Cláudia Oliveira, Maria Alice Melo-Santos, Lindomar Pena, Marli Cordeiro, Rafael Franca, André Oliveira, Christina Peixoto, Walter S Leal
No abstract text is available yet for this article.
October 18, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29043960/surveillance-of-zika-virus-infection-in-the-eu-eea-june-2015-to-january-2017
#16
G Spiteri, B Sudre, A Septfons, J Beauté, On Behalf Of The European Zika Surveillance Network
Surveillance of Zika virus (ZIKV) infection in the European Union/European Economic Area (EU/EEA) was implemented in 2016 in response to the large outbreak reported in the Americas in 2015 associated with an increased number of infants born with microcephaly. Between June 2015 and January 2017, 21 EU/EEA countries reported 2,133 confirmed cases of ZIKV infection, of whom 106 were pregnant women. Cases infected in the Caribbean constituted 71% of reported cases. Almost all cases (99%) were most probably infected by mosquito bite during travel outside continental Europe, while only 1% were transmitted sexually...
October 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29043055/seasonal-dynamics-in-mosquito-abundance-and-temperature-do-not-influence-avian-malaria-prevalence-in-the-himalayan-foothills
#17
Farah Ishtiaq, Christopher G R Bowden, Yadvendradev V Jhala
We examined seasonal prevalence in avian haemosporidians (Plasmodium and Haemoproteus) in migrant and resident birds in western Himalaya, India. We investigated how infection with haemosporidians in avian hosts is associated with temporal changes in temperature and mosquito abundance along with host abundance and life-history traits (body mass). Using molecular methods for parasite detection and sequencing partial cytochrome b gene, 12 Plasmodium and 27 Haemoproteus lineages were isolated. Our 1-year study from December 2008 to December 2009 in tropical Himalayan foothills revealed a lack of seasonal variation in Plasmodium spp...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29043015/-show-me-which-parasites-you-carry-and-i-will-tell-you-what-you-eat-or-how-to-infer-the-trophic-behavior-of-hematophagous-arthropods-feeding-on-wildlife
#18
Boris Makanga, Carlo Costantini, Nil Rahola, Patrick Yangari, Virginie Rougeron, Diego Ayala, Franck Prugnolle, Christophe Paupy
Most emerging infectious diseases are zoonoses originating from wildlife among which vector-borne diseases constitute a major risk for global human health. Understanding the transmission routes of mosquito-borne pathogens in wildlife crucially depends on recording mosquito blood-feeding patterns. During an extensive longitudinal survey to study sylvatic anophelines in two wildlife reserves in Gabon, we collected 2,415 mosquitoes of which only 0.3% were blood-fed. The molecular analysis of the blood meals contained in guts indicated that all the engorged mosquitoes fed on wild ungulates...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29042501/plasmodium-falciparum-calcium-dependent-protein-kinase-2-is-critical-for-male-gametocyte-exflagellation-but-not-essential-for-asexual-proliferation
#19
Abhisheka Bansal, Alvaro Molina-Cruz, Joseph Brzostowski, Jianbing Mu, Louis H Miller
Drug development efforts have focused mostly on the asexual blood stages of the malaria parasite Plasmodium falciparum Except for primaquine, which has its own limitations, there are no available drugs that target the transmission of the parasite to mosquitoes. Therefore, there is a need to validate new parasite proteins that can be targeted for blocking transmission. P. falciparum calcium-dependent protein kinases (PfCDPKs) play critical roles at various stages of the parasite life cycle and, importantly, are absent in the human host...
October 17, 2017: MBio
https://www.readbyqxmd.com/read/29042500/immune-regulation-of-plasmodium-is-anopheles-species-specific-and-infection-intensity-dependent
#20
Maria L Simões, Godfree Mlambo, Abhai Tripathi, Yuemei Dong, George Dimopoulos
Malaria parasite ookinetes must traverse the vector mosquito midgut epithelium to transform into sporozoite-producing oocysts. The Anopheles innate immune system is a key regulator of this process, thereby determining vector competence and disease transmission. The role of Anopheles innate immunity factors as agonists or antagonists of malaria parasite infection has been previously determined using specific single Anopheles-Plasmodium species combinations. Here we show that the two C-type lectins CTL4 and CTLMA2 exert differential agonistic and antagonistic regulation of parasite killing in African and South American Anopheles species...
October 17, 2017: MBio
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