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https://www.readbyqxmd.com/read/28549173/incidental-mosquitocidal-effect-of-an-ivermectin-mass-drug-administration-on-anopheles-farauti-conducted-for-scabies-control-in-the-solomon-islands
#1
Christian Kositz, Jeptah Talina, Jason Diau, Rowena Asugeni, Cheryl Whitehorn, David Mabey, Carlos Chaccour, Michael Marks
Background: The Solomon Islands is targeting elimination of malaria by 2030. The dominant vector is the predominantly exophagic, exophilic Anopheles farauti sensu strictu. This biting behaviour limits the efficacy of conventional vector control tools and highlights the need for new strategies. When administered to humans ivermectin has been shown to have a mosquitocidal effect. Mass drug administration (MDA) with ivermectin is an emerging strategy in the control of scabies. In this study we explored any incidental effect of ivermectin MDA conducted for scabies control on mosquitoes...
May 26, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28545061/microbiota-induced-peritrophic-matrix-regulates-midgut-homeostasis-and-prevents-systemic-infection-of-malaria-vector-mosquitoes
#2
Faye H Rodgers, Mathilde Gendrin, Claudia A S Wyer, George K Christophides
Manipulation of the mosquito gut microbiota can lay the foundations for novel methods for disease transmission control. Mosquito blood feeding triggers a significant, transient increase of the gut microbiota, but little is known about the mechanisms by which the mosquito controls this bacterial growth whilst limiting inflammation of the gut epithelium. Here, we investigate the gut epithelial response to the changing microbiota load upon blood feeding in the malaria vector Anopheles coluzzii. We show that the synthesis and integrity of the peritrophic matrix, which physically separates the gut epithelium from its luminal contents, is microbiota dependent...
May 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28544438/genome-wide-identification-characterization-and-evolution-of-cuticular-protein-genes-in-the-malaria-vector-anopheles-sinensis-diptera-culicidae
#3
Bai-Qi Liu, Liang Qiao, Qi-Yi He, Yong Zhou, Shuang Ren, Bin Chen
Thirteen cuticular proteins (CPs) families have been recognized in arthropods. In this study, 250 Anopheles sinensis CP genes were identified and named based on genome and transcriptome sequences. They were classified into 10 families based on motifs and phylogenetic analyses. In 11 other insect species, 9 had CP numbers > 150 while Apis mellifera and Tribolium castaneum had CP numbers less than 52. The CPs of 8 species occupied > 1.4% of the total genomic gene number whereas in 3 species the CPs occupied < 1%...
May 24, 2017: Insect Science
https://www.readbyqxmd.com/read/28542484/simulating-within-vector-generation-of-the-malaria-parasite-diversity
#4
Lauren M Childs, Olivia F Prosper
Plasmodium falciparum, the most virulent human malaria parasite, undergoes asexual reproduction within the human host, but reproduces sexually within its vector host, the Anopheles mosquito. Consequently, the mosquito stage of the parasite life cycle provides an opportunity to create genetically novel parasites in multiply-infected mosquitoes, potentially increasing parasite population diversity. Despite the important implications for disease transmission and malaria control, a quantitative mapping of how parasite diversity entering a mosquito relates to diversity of the parasite exiting, has not been undertaken...
2017: PloS One
https://www.readbyqxmd.com/read/28542335/interventions-that-effectively-target-anopheles-funestus-mosquitoes-could-significantly-improve-control-of-persistent-malaria-transmission-in-south-eastern-tanzania
#5
Emmanuel W Kaindoa, Nancy S Matowo, Halfan S Ngowo, Gustav Mkandawile, Arnold Mmbando, Marcelina Finda, Fredros O Okumu
Malaria is transmitted by many Anopheles species whose proportionate contributions vary across settings. We re-assessed the roles of Anopheles arabiensis and Anopheles funestus, and examined potential benefits of species-specific interventions in an area in south-eastern Tanzania, where malaria transmission persists, four years after mass distribution of long-lasting insecticide-treated nets (LLINs). Monthly mosquito sampling was done in randomly selected households in three villages using CDC light traps and back-pack aspirators, between January-2015 and January-2016, four years after the last mass distribution of LLINs in 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28542123/malaria-surveillance-united-states-2014
#6
Kimberly E Mace, Paul M Arguin
PROBLEM/CONDITION: Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission...
May 26, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28533429/fibrinogen-domain-of-frep1-is-a-broad-spectrum-malaria-transmission-blocking-vaccine-antigen
#7
Guodong Niu, Caio Franca, Genwei Zhang, Wanlapa Roobsoong, Wang Nguitragool, Xiaohong Wang, Jetsumon Prachumsri, Noah S Butler, Jun Li
FREP1 in mosquito midguts facilitates P. falciparum parasite transmission. Fibrinogen-like (FBG) domain of FREP1 is highly conserved (>90% identical) among Anopheles species from different continents, suggesting that anti-FBG antibodies may block malaria transmission to all anopheline mosquitoes. Using standard membrane-feeding assays, anti-FREP1 polyclonal antibodies significantly blocked transmission of P. berghei and P. vivax to An. gambiae and An. dirus respectively. Furthermore, in vivo studies of mice immunized with FBG achieved >75% blocking efficacy of P...
May 22, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28526032/multiplex-dnase-free-one-step-reverse-transcription-pcr-for-plasmodium-18s-rrna-and-spliced-gametocyte-specific-mrnas
#8
Amelia E Hanron, Zachary P Billman, Annette M Seilie, Tayla M Olsen, Matthew Fishbaugher, Ming Chang, Thomas Rueckle, Nicole Andenmatten, Bryan Greenhouse, Emmanuel Arinaitwe, John Rek, Smita Das, Gonzalo J Domingo, Kelly Shipman, Stefan H Kappe, James G Kublin, Sean C Murphy
BACKGROUND: Plasmodium gametocytes are sexual stages transmitted to female Anopheles mosquitoes. While Plasmodium parasites can be differentiated microscopically on Giemsa-stained blood smears, molecular methods are increasingly used because of their increased sensitivity. Molecular detection of gametocytes requires methods that discriminate between asexual and sexual stage parasites. Commonly tested gametocyte-specific mRNAs are pfs25 and pfs230 detected by reverse transcription polymerase chain reaction (RT-PCR)...
May 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28523613/eco-friendly-and-cost-effective-ag-nanocrystals-fabricated-using-the-leaf-extract-of-habenaria-plantaginea-toxicity-on-six-mosquito-vectors-and-four-non-target-species
#9
Chinnadurai Aarthi, Marimuthu Govindarajan, Pichaimuthu Rajaraman, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Ramzi A Mothana, Nasir A Siddiqui, Giovanni Benelli
Recently, the biofabrication of metal nanoparticles has gained wide interest owing to its inherent features such as swift, simplicity, eco-friendliness, and cheaper costs. Different green-reducing agents led to the production of nanoparticles with varying toxicity on insects. In the current study, silver nanoparticles (AgNPs) were successfully synthesized using Habenaria plantaginea leaf extract. Ag nanoparticles were studied by UV-Vis spectroscopy (UV-Vis), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM), scanning electron microscopy (SEM) coupled with energy-dispersive spectroscopy (EDS), and transmission electron microscopy (TEM)...
May 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28515777/experimental-evolution-to-increase-the-efficacy-of-the-entomopathogenic-fungus-beauveria-bassiana-against-malaria-mosquitoes-effects-on-mycelial-growth-and-virulence
#10
Claudio A Valero-Jiménez, Jan A L van Kan, Constantianus J M Koenraadt, Bas J Zwaan, Sijmen E Schoustra
Entomopathogenic fungi such as Beauveria bassiana are currently considered as a potential control agent for malaria mosquitoes. The success of such strategies depends among others on the efficacy of the fungus to kill its hosts. As B. bassiana can use various resources for growth and reproduction, increasing the dependency on mosquitoes as a nutritional source may be instrumental for reaching this goal. Passage of entomopathogenic fungi through an insect host has been shown to increase its virulence. We evaluated the virulence, fungal outgrowth, mycelial growth rate, and sporulation rate of two B...
June 2017: Evolutionary Applications
https://www.readbyqxmd.com/read/28511277/operational-mosquito-and-vector-borne-diseases-surveillance-at-incirlik-air-base-turkey
#11
Will K Reeves, Myrna M Miller, Orhan Bayik, Leah Chapman
Arboviruses on Incirlik Air Base, Turkey, pose a threat to military personnel and civilians, but might also be relevant for understanding the threats in neighboring conflict zones such as Syria. We reviewed 6 years of mosquito and arbovirus surveillance at Incirlik Air Base. Over 6,000 mosquitoes were identified as Aedes caspius, Anopheles claviger, Culex mimeticus, Cx. perexiguus, Cx. pipiens, Cx. sinaiticus, and Culiseta longiareolata. Almost all of the mosquitoes (more than 90%) were Cx. perexiguus or Cx...
January 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28511273/biosurveillance-and-morphological-variations-of-larvae-and-pupae-of-common-malaria-vectors-anopheles-anopheles-hyrcanus-group-species-in-the-republic-of-korea
#12
Leopoldo M Rueda, Heung-Chul Kim, Sung-Tae Chong, Terry A Klein, Mustapha Debboun
A total of 4,576 Anopheles (Anopheles) Hyrcanus Group larvae belonging to 6 species (An. belenrae, An. kleini, An. sinensis, An. pullus, An. lesteri, and An. sineroides) were collected from 7 different habitat types in 3 provinces of the Republic of Korea. The occurrence and relative abundance of 6 Anopheles species were noted. The descriptions in the article of the waxy body ornamentations or patterns of An. (Ano.) Hyrcanus Group larvae and pupae may be useful for rapid field species identification when conducting larval mosquito surveillance...
January 2017: U.S. Army Medical Department Journal
https://www.readbyqxmd.com/read/28504452/effect-of-co2-concentration-on-mosquito-collection-rate-using-odor-baited-suction-traps
#13
Lee McPhatter, Alec C Gerry
Carbon dioxide (CO2 ) has been used for decades to enhance capture of host-seeking mosquitoes when released in association with traps commonly used by mosquito and vector control agencies. However, there is little published work evaluating the effect of altering CO2 release rates relative to the number of mosquitoes captured in these traps. This study investigated how varying CO2 concentration altered the mosquito collection rate at a freshwater wetlands in southern California. Host-seeking mosquitoes were captured in CDC-style traps baited with one of six CO2 release rates ranging from 0-1,495 ml/min from gas cylinders...
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28504445/first-record-of-anopheles-daciae-linton-nicolescu-harbach-2004-in-poland
#14
Katarzyna Rydzanicz, Aleksandra Czułowska, Christina Manz, Piotr Jawień
No abstract text is available yet for this article.
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28504441/vector-bionomics-and-malaria-transmission-along-the-thailand-myanmar-border-a-baseline-entomological-survey
#15
N Kwansomboon, V Chaumeau, P Kittiphanakun, D Cerqueira, V Corbel, T Chareonviriyaphap
Baseline entomological surveys were conducted in four sentinel sites along the Thailand-Myanmar border to address vector bionomics and malaria transmission in the context of a study on malaria elimination. Adult Anopheles mosquitoes were collected using human-landing catch and cow-bait collection in four villages during the rainy season from May-June, 2013. Mosquitoes were identified to species level by morphological characters and by AS-PCR. Sporozoite indexes were determined on head/thoraces of primary and secondary malaria vectors using real-time PCR...
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28504435/an-updated-checklist-of-the-culicidae-diptera-of-morocco-with-notes-on-species-of-historical-and-current-medical-importance
#16
Bouchra Trari, Mohamed Dakki, Ralph E Harbach
An updated checklist of the mosquito species (Diptera: Culicidae) recorded in Morocco from 1916 to 2016 is provided, including synonyms and synonymous usage for each species. Forty-three species belonging to seven genera are recorded so far: Anopheles (9), Aedes (12) Coquillettidia (2), Culex (12), Culiseta (5), Orthopodomyia (1) and Uranotaenia (2). Traditional and equivalent names in the polyphyletic concept of Aedes are provided for the aedine species. The historical importance and current potential threat of mosquitoes to human health in Morocco is reviewed...
June 2017: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/28502740/isolation-of-an-insulin-like-peptide-from-the-asian-malaria-mosquito-anopheles-stephensi-that-acts-as-a-steroidogenic-gonadotropin-across-diverse-mosquito-taxa
#17
Andrew B Nuss, Mark R Brown
Many insulin-like peptides (ILPs) have been identified in insects, yet only a few were isolated in their native form for structural and functional studies. Antiserum produced to ILP3 in Aedes aegypti was used in a radioimmunoassay to monitor the purification of an ILP from heads of adult An. stephensi and recognized the ILP in other immunoassays. The structure of the purified peptide matched that predicted for the ILP3 in this species. The native form stimulated ecdysteroid production by ovaries isolated from non-blood fed females...
May 11, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28497875/comparison-of-the-tracheal-systems-of-anopheles-sinensis-and-aedes-togoi-larvae-using-synchrotron-x-ray-microscopic-computed-tomography-respiratory-system-of-mosquito-larvae-using-sr-%C3%AE-ct
#18
Young-Ran Ha, Jeongeun Ryu, Eunseop Yeom, Sang-Joon Lee
Mosquito-borne diseases, such as malaria, dengue fever, and Zika virus, are serious global health issues. Vector control may be an important strategy in reducing the mortality caused by these diseases. The respiratory system of mosquito larvae in the water has to inhale atmospheric oxygen as aquatic organisms. In this study, the three-dimensional (3D) structures of the dorsal longitudinal trunks (DLTs) of the tracheal systems of Anopheles sinensis and Aedes togoi were compared using synchrotron X-ray microscopic computed tomography...
May 12, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28497331/zingiber-cernuum-zingiberaceae-essential-oil-as-effective-larvicide-and-oviposition-deterrent-on-six-mosquito-vectors-with-little-non-target-toxicity-on-four-aquatic-mosquito-predators
#19
Mohan Rajeswary, Marimuthu Govindarajan, Naiyf S Alharbi, Shine Kadaikunnan, Jamal M Khaled, Giovanni Benelli
Mosquitoes are responsible for the transmission of many pathogens and parasites, which cause serious diseases in humans and animals. Currently, botanical products have been suggested as alternative tools in the fight against arthropod vectors. In this study, the essential oil (EO) extracted from Zingiber cernuum was tested as larvicide and oviposition deterrent on six mosquito species of public health relevance, including malaria and Zika virus vectors. The EO showed high toxicity on third instar larvae of Anopheles stephensi (LC50 = 41...
May 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28495403/effect-of-insecticide-treated-bed-nets-on-house-entry-by-malaria-mosquitoes-the-flight-response-recorded-in-a-semi-field-study-in-kenya
#20
Jeroen Spitzen, Teun Koelewijn, W Richard Mukabana, Willem Takken
Insecticide-treated nets are currently a major tool to reduce malaria transmission. Their level of repellency affects contact of the mosquito with the net, but may also influence the mosquito's entry into the house. The response of host-seeking malaria mosquitoes approaching the eave of an experimental house was recorded within a large screen house. We compared entry- and exit rates in relation to the presence in the house of different insecticide-treated bed nets (ITNs) with an untreated net. Mosquitoes were lured towards the house by dispensing a synthetic host-odour blend from within the net in the house...
May 8, 2017: Acta Tropica
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