what does heat tell a mosquito? characterization of the orientation behaviour of aedes aegypti towards heat sources.the use of heat as a cue for the orientation of haematophagous insects towards hot-blooded hosts has been acknowledged for many decades. in mosquitoes, thermoreception has been studied at the molecular, physiological and behavioural levels, and the response to heat has been evaluated in multimodal contexts. however, a direct characterization of how these insects evaluate thermal sources is still lacking. in this study we characterize aedes aegypti thermal orientation using a simple dual choice p ...201728479122
eco-friendly synthesis of silver nanoparticles and its larvicidal property against fourth instar larvae of aedes this study, larvicidal activity of silver nanoparticles (agnps) synthesised using apple extract against fourth instar larvae of aedes aegypti was determined. as a result, the agnps showed moderate larvicidal effects against ae. aegypti larvae (lc50 = 15.76 ppm and lc90 = 27.7 ppm). in addition, comparison of larvicidal activity performance of agnps at high concentration prepared using two different methods showed that ae. aegypti larvae was fully eliminated within the duration of 2.5 h. from ...201728476997
photo-induced and phytomediated synthesis of silver nanoparticles using derris trifoliata leaf extract and its larvicidal activity against aedes aegypti.due to the increased development of resistance of vectors against synthetic insecticides and chemical drugs, plant based insecticides serve as promising biocontrol agents for effective vector control. green approach for the synthesis of nanoparticles has been attained using environmentally safe, non-toxic plant extracts. the present study was aimed to investigate the potent larvicidal activity of silver nanoparticles (agnps) produced by derris trifoliata leaf extract in relation to the various c ...201728460330
allergens involved in the cross-reactivity of aedes aegypti with other arthropods.cross-reactivity between aedes aegypti and mites, cockroaches, and shrimp has been previously suggested, but the involved molecular components have not been fully described.201728434865
n-aryl-n'-ethyleneaminothioureas effectively inhibit acetylcholinesterase 1 from disease-transmitting mosquitoes.vector control of disease-transmitting mosquitoes by insecticides has a central role in reducing the number of parasitic- and viral infection cases. the currently used insecticides are efficient, but safety concerns and the development of insecticide-resistant mosquito strains warrant the search for alternative compound classes for vector control. here, we have designed and synthesized thiourea-based compounds as non-covalent inhibitors of acetylcholinesterase 1 (ache1) from the mosquitoes anoph ...201728433681
identification of the septate junction protein gliotactin in the mosquito aedes aegypti: evidence for a role in increased paracellular permeability in larvae.septate junctions (sjs) regulate paracellular permeability across invertebrate epithelia. however, little is known about the function of sj proteins in aquatic invertebrates. in this study, a role for the transmembrane sj protein gliotactin (gli) in the osmoregulatory strategies of larval mosquito (aedes aegypti) was examined. differences in gli transcript abundance were observed between the midgut, malpighian tubules, hindgut and anal papillae of a. aegypti, which are epithelia that participate ...201728432154
allatotropin: a pleiotropic neuropeptide that elicits mosquito immune responses.allatotropins (at) are neuropeptides with pleotropic functions on a variety of insect tissues. they affect processes such as juvenile hormone biosynthesis, cardiac rhythm, oviduct and hindgut contractions, nutrient absorption and circadian cycle. the present work provides experimental evidence that at elicits immune responses in two important mosquito disease vectors, anopheles albimanus and aedes aegypti. hemocytes and an immune-competent mosquito cell line responded to at by showing strong mor ...201728426765
efficacy of some wearable devices compared with spray-on insect repellents for the yellow fever mosquito, aedes aegypti (l.) (diptera: culicidae).the current zika health crisis in the americas has created an intense interest in mosquito control methods and products. mosquito vectors of zika are of the genus aedes, mainly the yellow fever mosquito, aedes aegypti. l. the use of repellents to alter mosquito host seeking behavior is an effective method for the prevention of mosquito-borne diseases. a large number of different spray-on repellents and wearable repellent devices are commercially available. the efficacies of many repellents are u ...201728423421
habitat and density of oviposition opportunity influences aedes aegypti (diptera: culicidae) flight distance.understanding the dispersal of aedes (aegypti (l.) diptera: culicidae) after consuming a potentially infectious bloodmeal is an important part of controlling the spread of the arboviruses it transmits. because of the impact on abundance, removal of oviposition sites is a key component of vector control. however, source reduction around a case may encourage dispersal of potentially infected vectors. we compare the effect of oviposition site availability on ae. aegypti dispersal behavior within 30 ...201728419273
the impact of temperature and body size on fundamental flight tone variation in the mosquito vector aedes aegypti (diptera: culicidae): implications for acoustic lures.aedes aegypti (l.) males use female flight tone as a means of mate localization. by playing the sound of a flying female, males can be attracted to a trap to monitor mosquito populations and the progress of transgenic male releases. however, the female flight tone used to attract males needs to be optimized to maximize trap effectiveness. the fundamental frequency of female flight tone could be influenced by both body size and ambient temperature. however, no analysis yet has considered both the ...201728402550
immunohistochemical mapping and transcript expression of the gpa2/gpb5 receptor in tissues of the adult mosquito, aedes aegypti.gpa2/gpb5 is a glycoprotein hormone found in most bilateral metazoans including the mosquito, aedes aegypti. to elucidate physiological roles and functions of gpa2/gpb5, we aim to identify prospective target tissues by examining the tissue- and sex-specific expression profile of its receptor, the leucine-rich repeat-containing g protein-coupled receptor 1 (lgr1) in the adult mosquito. western analyses using a heterologous system with cho-k1 cells, transiently expressing a. aegypti lgr1, yielded ...201728401307
dengue fever outbreaks in eritrea, 2005-2015: a case for strengthening surveillance, control and reporting.the geographic distribution and burden of dengue is increasing globally. this study aims to evaluate dengue outbreaks and to substantiate the need for strengthened surveillance, reporting and control in eritrea.201629202065
phylogenetic analysis of aedes aegypti based on mitochondrial nd4 gene sequences in almadinah, saudi arabia.aedes aegypti is the main vector of the yellow fever and dengue virus. this mosquito has become the major indirect cause of morbidity and mortality of the human worldwide. dengue virus activity has been reported recently in the western areas of saudi arabia. there is no vaccine for dengue virus until now, and the control of the disease depends on the control of the vector.201628959327
knowledge, attitudes, and practices regarding dengue infection among public sector healthcare providers in machala, ecuador.dengue fever is a rapidly emerging infection throughout the tropics and subtropics with extensive public health burden. adequate training of healthcare providers is crucial to reducing infection incidence through patient education and collaboration with public health authorities. we examined how public sector healthcare providers in a dengue-endemic region of ecuador view and manage dengue infections, with a focus on the 2009 world health organization (who) dengue guidelines.201628883952
new state records of mosquitoes for colorado.the 1967 treatment of the mosquitoes of colorado by harmston and lawson and subsequent publications have recorded 46 culicid species from colorado. as part of a study to create an updated synopsis of the mosquitoes of colorado, adult trapping at numerous localities was conducted in colorado during the summers of 2013 and 2014. this review also included an examination of mosquito specimens in various relevant museum collections. aedes (ochlerotatus) niphadopsis and ae. (och.) spencerii spencerii ...201526181688
bioassay and biochemical studies of the status of pirimiphos-methyl and cypermethrin resistance in aedes (stegomyia) aegypti and aedes (stegomyia) albopictus (diptera: culicidae) in singapore.aedes (stegomyia) aegypti (linnaeus) and ae. (stegomyia) albopictus (skuse) were sampled from five regions of singapore (central, north east, north west, south east and south west) and tested with diagnostic concentrations of the technical grade insecticides, pirimiphos-methyl and cypermethrin. biochemical assays were performed on the same populations of ae. aegypti and ae. albopictus to determine activities of detoxifying enzymes, including non-specific esterase (est), monooxygenase (mfo) and a ...201425776592
pre-treatment of stegomyia aegypti mosquitoes with a sublethal dose of imidacloprid impairs behavioural avoidance induced by lemon oil and deet.the present study was conducted to determine whether imidacloprid can impair the avoidance behaviour of the mosquito stegomyia aegypti. laboratory investigations using a t-maze apparatus showed that st. aegypti mosquitoes present long term avoidance behaviour when they are exposed to repetitive trials with lemon oil and deet. the present study tested the effect of a sublethal dose of imidacloprid on the avoidance behaviour of st. aegypti mosquitoes over a 48 h period. data suggest that 0.5 ng of ...201525155403
intra-annual changes in abundance of aedes (stegomyia) aegypti and aedes (ochlerotatus) epactius (diptera: culicidae) in high-elevation communities in mexico.we examined temporal changes in the abundance of the mosquitoes aedes (stegomyia) aegypti (l.) and aedes (ochlerotatus) epactius dyar & knab from june to october 2012 in one reference community at lower elevation (rio blanco; approximately 1,270 m) and three high-elevation communities (acultzingo, maltrata, and puebla city; 1,670-2,150 m) in veracruz and puebla states, méxico. the combination of surveys for pupae in water-filled containers and trapping of adults, using bg-sentinel traps baited w ...201425118405
the importance of oxidases in the tolerance of deciduous leaf infusions by aedes (stegomyia) aegypti and aedes (stegomyia) albopictus (diptera: culicidae).aedes (stegomyia) aegypti (l.) and aedes (stegomyia) albopictus (skuse) larvae rely on oxidases to reduce toxicity of water soluble toxins from some senescent tree leaf infusions. the mortality of third instar ae. aegypti larvae in live oak and pin oak leaf infusions increased significantly in the presence of piperonyl butoxide (pbo), a broad inhibitor of cytochrome p450s (cyps). in contrast, pbo treatment did not increase mortality in water controls or infusions of northern red oak or sugar map ...201424605455
[distribution of aedes (stegomyia) aegypti l. and aedes (stegomyia) albopictus skus. mosquitoes on the black sea coast of the caucasus].there is evidence that in the black sea coastal area, ae.albopictus mosquitoes are encountered everywhere from n. afon to dzhubga over a length of 250 km of the coast and ae.aegypti ones are from n. afon to agoi, tuapse district (215 km). the ae.albopictus mosquitoes have extended 44 km in length and 600 m in height in the eastern part of the coast (krasnaya polyana).201323805493
laboratory and field evaluation of the effects of the neonicotinoid imidacloprid on the oviposition response of aedes (stegomyia) aegypti linnaeus (diptera: culicidae).in this paper, we assessed the suitability of using the neonicotinoid imidacloprid with standard ovitraps by evaluating the ovicidal properties of imidacloprid and its influence on the oviposition response of gravid females of aedes (stegomyia) aegypti linnaeus (diptera: culicidae). first, we calculated the imidacloprid lethal dose 99 (ld(99)) by exposing third instar larvae of the target species to different concentrations of the insecticide. next, ae. aegypti eggs were exposed to the imidaclop ...201122241123
[compared biology of populations of aedes (stegomyia) aegypti (l.) (diptera: culicidae) of paraíba state, brazil].the present work aims at comparing the life cycle and estimating, based on life tables, the patterns of fertility of populations of a. aegypti (l.). the life cycles were studied at the temperature of 26 +/- 2 degrees c, and 12h photophase. the development period, egg viability and larval and pupal survival were evaluated daily as well as adult longevity and fecundity. tables of fertility life were built. the durations of egg, larva and pupa stages varied from 3,9 to 4,5 days, from 6,4 to 8,3 day ...200818368254
the geometry of the wing of aedes (stegomyia) aegypti in isofemale lines through successive generations.under a common laboratory environment, three isofemale lines of aedes (stegomyia) aegypti were used to score metric properties (size and shape) of the wings during 10 generations. since the number of generations was much higher than the number of founders in each line, genetic drift was expected to occur. size tended to slightly increase with time, but its variation among the successive generations did not show any detectable information specific to each line. shape could discriminate among line ...200817600773
biochemical studies of insecticide resistance in aedes (stegomyia) aegypti and aedes (stegomyia) albopictus (diptera: culicidae) in thailand.biochemical analysis was performed on field caught aedes (stegomyia) aegypti and aedes (stegomyia) albopictus (diptera: culicidae) mosquitoes to determine activities of enzymes including mixed function oxidases (mfo), nonspecific esterases (alpha- and beta-), glutathione-s-transferases (gst), and insensitive acetylcholinesterase (ache). biochemical tests were performed on f1 generation of ae. aegypti field caught mosquitoes, while in ae. albopictus f2 progenies were used. twenty-six samples of a ...200717568372
a new larvicidal lignan from piper fimbriulatum.a new lignan, 3,4,5'-trimethoxy-3',4'-methylenedioxy-7,9':7',9 diepoxylignan (1) (6-[4-(3,4-dimethoxy-phenyl)-tetrahydro-furo[3,4-c.]furan-1-yl]-4-methoxy-benzo[ ] dioxole) together with two known lignans, 7'-epi.-sesartemin (2) and diayangambin (3), and a known flavonoid, 5-hydroxy-7,4'-dimethoxyflavone (4), were isolated from the leaves of piper fimbriulatum. c. dc. their structures were assigned by a combination of one- and two-dimensional nmr techniques. 7'-epi.-sesartemin (2) showed the hig ...200528925841
[new and unusual locations of aedes (stegomyia) aegypti, linné 1762 (diptera, culicidae) in madagascar].the author situates and comments three new aedes aegypti's locations in madagascar; one of which is in the international tananarive's airport's control area.19863802312
[the filaria breinlia booliati in the adedes togoi adipose tissue; comparison with the couple dipetalonema dessetae-a. aegypti (author's transl)].in the couple filaria-vector breinlia (breinlia) booliati-aedes (finlaya) togoi, the changs observed in the parasited adipose tissue display large similarities with those recently observed in dipetalonemia (molinema) dessetae-aedes (stegomyia) aegypti: same syncitium organisation of parasited adipocytes, and local stimulation of protein synthesis. however, there is an essential difference between the two coules studied: the parasited adipous syncitium is not any more induced by a blood uptake in ...2007575875
genetic distinctness of sympatric forms of aedes aegypti in east africa. 197928568173
evolutionary strategies in life table characteristics among feral and urban strains of aedes aegypti (l.). 197228555736
reproductive isolation in stegomyia mosquitoes. ii. hybrid breakdown between aedes aegypti and a. mascarensis. 197028564933
the influence of the blood meal type on the fecundity of aedes (stegomyia) aegypti l. (diptera: culicidae). 19705448824
studies on arboviruses and bats (chiroptera) in east africa. i. experimental infection of bats and virus transssion attempts in aedes (stegomyia) aegypti (linnaeus). 19685729255
artificial infection of aedes (stegomyia) aegypti (linnaeus) with five african arboviruses. 19674964631
barriers to hybridization between aedes aegypti and aedes albopictus (diptera: culicidae). 196728556103
laboratory observations on the oviposition habits of aedes (stegomyia) aegypti (linnaeus). 196414212893
[are certain morphological characteristics sufficient to differenciate the varieties of aedes (stegomyia) aegypti linnaeus 1762?importance of the morphological characteristics]. 200614220591
observations on the oviposition-cycle of aedes (stegomyia) aegypti (linnaeus). vi. 196113898644
observations on the oviposition-cycle of aedes (stegomyia) aegypti (linnaeus), v. 196113903448
notes on the mosquitoes and mosquito borne infections of sierra leone. 1. the breeding places of aedes (stegomyia) aegypti in and around freetown. 196013838027
observations on the oviposition-cycle of aedes (stegomyia) aegypti (linnaeus), iv. 196013811896
studies on the biting habits of the mosquito aedes (stegomyia) aegypti, linn., in a west african village. 196013802671
observations on the feeding habits of the mosquito aedes (stegomyia) aegypti (linnaeus): the loss of fluid after a blood-meal and the amount of blood taken during feeding. 196013802674
[appearance of rhythmic contractions on explants of thoracic imaginal disks of larvae of aedes (stegomyia) aegypti (l.) cultivated in vitro]. 201313692106
observations on the oviposition-cycle of aedes (stegomyia) aegypti (linnaeus). iii. 195913850105
laboratory observations on pupation and emergence in the mosquito aedes (stegomyia) aegypti (linnaeus). 195913830752
observations on the ovipositioncycle of aëdes (stegomyia) aegypti (linnaeus), ii. 195913650486
the production of ddt resistance in a southern nigerian strain of aedes (stegomyia) aegypti under laboratory. 195813570011
laboratory studies on the survival of the eggs of aedes (stegomyia) aegypti under adverse conditions. 195813530920
observations on the oviposition-cycle of aëdes (stegomyia) aegypti (linnaeus). 195713445076
initiation and promotion of ovarian development in the mosquito aëdes (stegomyia) aegypti (linnaeus). 195613395327
genetic differences affecting egg-laying in the mosquito aëdes (stegomyia) aegypti (linnaeus). 195613395326
the laboratory transmission of yellow fever by aëdes (stegomyia) aegypti (linnaeus) from malaya. 195514362420
experiments in crossing aedes (stegomyia) aegypti linnaeus and aedes (stegomyia) albopictus skuse. 194917800955
control of stegomyia fasciata (ædes ægypti) mosquitoes in indian country craft by a mosquito-proof metal cap (bennett pattern) for drinking-water receptacles. 193829014217
a practical way of dealing with ædes ægypti (stegomyia fasciata) mosquito breeding in country craft. 193629013069
a practical way of dealing with ædes ægypti (stegomyia fasciata) mosquito breeding in country craft. 193629012997
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