| results of insecticide susceptibility tests with culex gelidus in bangalore city. | | 1979 | 231574 |
| arbovirus infections in sarawak, october 1968--february 1970 tembusu and sindbis virus isolations from mosquitoes. | thirty isolations of tembusu virus and four of sindbis virus were obtained from approximately 280 000 mosquitoes collected between october 1968 and february 1970 in sarawak, particularly from k. tijirak, a land dyak village 19 miles south of kuching. twenty-two isolations of tembusu virus and two of sindbis virus were from culex tritaeniorhynchus; two of tembusu virus and two of sindbis virus came from culex gelidus. tembusu virus was active throughout the year at k. tijirak, the highest infecti ... | 1975 | 235907 |
| isolation of japanese encephalitis virus from mosquitoes collected in karnataka state, india from 1985 to 1987. | detection and isolation of japanese encephalitis (je) virus using mosquito inoculation and immunofluorescence techniques were attempted from female mosquitoes collected in je endemic areas of kolar and mandya districts of karnataka state, india, from 1985 to 1987. 65,388 mosquitoes consisting of 19 species in 1541 pools were processed. of these, 18 pools showed the presence of je virus antigen. je virus was isolated from 9 pools, 3 of culex gelidus, 2 of c. tritaeniorhynchus, and one each of c. ... | 1989 | 2575809 |
| a longitudinal study of japanese encephalitis in suburban bangkok, thailand. | a one-year study of japanese encephalitis (je) in a small focus of transmission was conducted in suburban bangkok in 1985. monthly data were collected on weather, vector density, sentinel pig and chick je antibody seroconversions, and epidemiology as related to human je cases. the primary vector species were found to be culex gelidus and culex tritaeniorhynchus; from which one isolate each was obtained in march and june, respectively. pig je antibody seroconversion peaked in april (the hottest m ... | 1987 | 2896391 |
| effectiveness of soap formulations containing deet and permethrin as personal protection against outdoor mosquitoes in malaysia. | two soap formulations, both containing 20% deet and one each containing permethrin at 0.5 and 1.0%, respectively, were applied to exposed arms and legs of volunteers as personal protection against outdoor human biting mosquitoes in six locations on penang island, malaysia. the predominant mosquito species collected from these locations were aedes albopictus, mansonia uniformis, culex gelidus, anopheles lesteri and armigeres subalbatus. efficacy and residual effects up to 4 hours indicated good p ... | 1986 | 2906963 |
| studies on japanese encephalitis vector mosquitoes in selangor, malaysia. | mosquito collections were carried out from may to june 1992 and from september to december 1992 in an area where a case of japanese encephalitis was confirmed. a total of 40,072 mosquitoes belonging to 35 species and 8 genera were collected. the dominant species in that locality were culex vishnui, culex tritaeniorhynchus, culex pseudovishnui, culex gelidus, aedes butleri, and mansonia uniformis. | 1993 | 8126485 |
| abundance, parity, and japanese encephalitis virus infection of mosquitoes (diptera:culicidae) in sepang district, malaysia. | a 2-yr study of japanese encephalitis (je) virus in sepang district, selangor, malaysia, was carried out to identify the mosquito vectors and to determine their seasonal abundance, parity, and infection rates. in total, 81,889 mosquitoes belonging to 9 genera and > 50 species were identified from cdc trap collections augmented with dry ice during 1992 and 1993. culex tritaeniorhynchus giles and culex gelidus giles were the most abundant species, and both increased in numbers with increases in ra ... | 1997 | 9151487 |
| japanese encephalitis in south arcot district, tamil nadu, india: a three-year longitudinal study of vector abundance and infection frequency. | in the south arcot district, an area endemic for japanese encephalitis in tamil nadu, culex tritaeniorhynchus giles, culex vishnui theobald, culex gelidus theobald and culex fuscocephala theobald constituted 93.6% of 422,621 adult females representing 27 culicine species collected between august 1991 and july 1994. vector abundance was lowest in the hot and dry season (april-june) and highest in the cool and wet season (october-december). overall, 285,531 adult female mosquitoes (5,710 pools) we ... | 1997 | 9439119 |
| comparisons of rice field mosquito (diptera: culicidae) abundance among areas with different agricultural practices in northern thailand. | adult mosquitoes were collected from 3 areas in northern thailand with different availabilities of rice fields for larval habitats by using blacklight, truck, and pig-baited traps. culex tritaeniorhynchus giles and culex gelidus theobald were dominant in all samples. significant study-area differences were found in light and truck trap collections for cx. tritaeniorhynchus and cx. gelidus, but not for culex vishnui theobald + culex pseudovishnui colless. in pig-baited sample area differences wer ... | 1998 | 9775619 |
| mosquito and aquatic predator communities in ground pools on lands deforested for rice field development in central sulawesi, indonesia. | aquatic habitats, mosquitoes, and larvivorous predators were studied on deforested lands in central sulawesi, indonesia. open ground pools, mainly in depressions made by the treads of bulldozers and other heavy equipment, were numerous but because of their small size, comprised ca. 1% or less of the total area of the deforested lands studied. the dominant mosquitoes in these pools were anopheles vagus, culex vishnui, culex tritaeniorhynchus, and culex gelidus. the 1st 2 species were dominant in ... | 1999 | 10412104 |
| detection of the exotic mosquito culex gelidus in the northern territory. | | 2000 | 10846817 |
| a polymerase chain reaction based method for the detection of culex quinquefasciatus (diptera: culicidae). | culex quinquefasciatus say is the major vector of the filarial parasite wuchereria bancrofti (cobbold) which causes lymphatic filariasis in humans. a repetitive dna sequence from the genome of c. quinquefasciatus has been cloned and completely sequenced. the 693 bp cloned fragment had an a+t content of 72%. dot matrix analysis of the fragment did not reveal any direct or inverted repeats within it. southern blot analysis using a variety of restriction enzymes appeared to indicate that the cloned ... | 2000 | 10948365 |
| mosquito isolates of ross river virus from cairns, queensland, australia. | during 1996-1998 60,619 mosquitoes were collected around cairns, australia and processed for alphavirus isolation. thirty-three isolates of ross river (rr) virus were made from 9 species, aedes imprimens, aedes kochi, aedes notoscriptus, aedes vigilax, culex annulirostris, culex gelidus, mansonia septempunctata, verrallina (formerly aedes) carmenti, and verrallina lineatus. attempts to isolate rr virus from 121 aedes aegypti were unsuccessful. twenty-six (79%) of the isolates came from within 1 ... | 2000 | 11289664 |
| the appearance of a second genotype of japanese encephalitis virus in the australasian region. | in mid-january 2000, the reappearance of japanese encephalitis (je) virus activity in the australasian region was first demonstrated by the isolation of je virus from 3 sentinel pigs on badu island in the torres strait. further evidence of je virus activity was revealed through the isolation of je virus from culex gelidus mosquitoes collected on badu island and the detection of specific je virus neutralizing antibodies in 3 pigs from saint pauls community on moa island. nucleotide sequencing and ... | 2001 | 11791969 |
| japanese encephalitis on badu island, australia: the first isolation of japanese encephalitis virus from culex gelidus in the australasian region and the role of mosquito host-feeding patterns in virus transmission cycles. | during investigation of an outbreak of japanese encephalitis (je) in the torres strait, australia, in 2000, mosquitoes were collected in badu island community and at a newly established communal piggery about 3 km from the community. a total of 94,285 mosquitoes, comprising 91,240 (96.8%) unengorged females, 1630 (1.7%) blood-engorged females and 1415 (1.5%) males, were processed for virus isolation. one isolate of je virus was obtained from culex gelidus, with a minimum infection rate of 12.4:1 ... | 2001 | 11816428 |
| vector competence of australian mosquitoes (diptera: culicidae) for japanese encephalitis virus. | australian mosquitoes were evaluated for their ability to become infected with and transmit a torres strait strain of japanese encephalitis virus. mosquitoes, which were obtained from either laboratory colonies and collected using centers for disease control and prevention light traps baited with co2 and octenol or reared from larvae, were infected by feeding on a blood/sucrose solution containing 10(4.5 +/- 0.1) porcine stable-equine kidney (ps-ek) tissue culture infectious dose50/mosquito of t ... | 2003 | 12597658 |
| transmission of japanese encephalitis virus by culex gelidus theobald. | | 1962 | 13949551 |
| repellent properties of celery, apium graveolens l., compared with commercial repellents, against mosquitoes under laboratory and field conditions. | in our search for new bioactive products against mosquito vectors, we reported the slightly larvicidal and adulticidal potency, but remarkable repellency of apium graveolens both in laboratory and field conditions. repellency of the ethanolic preparation of hexane-extracted a. graveolens was, therefore, investigated and compared with those of 15 commercial mosquito repellents including the most widely used, deet. hexane-extracted a. graveolens showed a significant degree of repellency in a dose- ... | 2005 | 16262746 |
| effectiveness of zanthoxylum piperitum-derived essential oil as an alternative repellent under laboratory and field applications. | recently, there were considerable efforts made to promote the use of environmentally friendly and biodegradable natural insecticides and repellents, particularly from botanical sources. in this study, zanthoxylum piperitum-derived essential oil isolated by steam distillation was investigated and compared to the standard synthetic repellent, n,n-diethyl-3-methylbenzamide (deet), for repellency against mosquitoes under laboratory and field conditions. the oil of z. piperitum alone and also with 5% ... | 2007 | 16896651 |
| experimental infection of culex annulirostris, culex gelidus, and aedes vigilax with a yellow fever/japanese encephalitis virus vaccine chimera (chimerivax-je). | australian mosquitoes from which japanese encephalitis virus (jev) has been recovered (culex annulirostris, culex gelidus, and aedes vigilax) were assessed for their ability to be infected with the chimerivax-je vaccine, with yellow fever vaccine virus 17d (yf 17d) from which the backbone of chimerivax-je vaccine is derived and with jev-nakayama. none of the mosquitoes became infected after being fed orally with 6.1 log(10) plaque-forming units (pfu)/ml of chimerivax-je vaccine, which is greater ... | 2006 | 17038690 |
| expectoration of flaviviruses during sugar feeding by mosquitoes (diptera: culicidae). | biological transmission of arboviruses to a vertebrate host occurs when virions are expelled along with saliva during blood feeding by a hematophagous arthropod. we undertook experiments to determine whether mosquitoes expectorate flaviviruses in their saliva while sugar feeding. batches of culex annulirostris skuse and culex gelidus theobald (diptera: culicidae) were orally infected with japanese encephalitis (family flaviviridae, genus flavivirus, jev), kunjin (family flaviviridae, genus flavi ... | 2007 | 17915518 |
| distribution of mosquito (diptera: culicidae) species and wolbachia (rickettsiales: rickettsiaceae) infections during the bird immigration season in pathumthani province, central thailand. | mosquito distribution in the immigration bird-nested area, pathumthani province, was investigated from august to december in 2006. mosquitoes were collected by using co2-baited centers for disease control light traps in which dry ice was used as a source of co2 to attract mosquitoes. six traps were operated from 4 p.m. until 7 a.m. on each study day. four genera, which were anopheles, armigeres, culex, and mansonia with 14 species of mosquitoes were collected. culex gelidus (13.94-59.41%) and cu ... | 2008 | 18066693 |
| experimental infection of aedes sollicitans and aedes taeniorhynchus with two chimeric sindbis/eastern equine encephalitis virus vaccine candidates. | two chimeric vaccine candidates for eastern equine encephalitis virus (eeev) were developed by inserting the structural protein genes of either a north american (na) or south american (sa) eeev into a sindbis virus (sinv) backbone. to assess the effect of chimerization on mosquito infectivity, experimental infections of two potential north american bridge vectors of eeev, aedes sollicitans and ae. taeniorhynchus, were attempted. both species were susceptible to oral infection with all viruses af ... | 2008 | 18187790 |
| influence of the distribution of host species on adult abundance of japanese encephalitis vectors culex vishnui subgroup and culex gelidus in a rice-cultivating village in northern vietnam. | a field study was conducted in a village in northern vietnam to investigate how host distribution influences japanese encephalitis (je) vector abundance. indoor and outdoor collections were conducted from 50 compounds. we collected three je vector species--culex tritaeniorhynchus and culex vishnui that comprised the culex vishnui group, and culex gelidus. spatial autocorrelation was not observed in the mosquito assemblies at any scale larger than the house compounds. multivariate analyses reveal ... | 2008 | 18187800 |
| host feeding pattern of japanese encephalitis virus vector mosquitoes (diptera: culicidae) from kuttanadu, kerala, india. | identification of blood meals of vector mosquitoes is an important tool in the epidemiological investigations of vector-borne diseases. the blood meals of three mosquito species involved in the transmission of japanese encephalitis virus (jev) from the kuttanadu area, kerala, were determined using the agarose gel diffusion technique. a total of 4959 blood smears belonging to culex (culex) tritaeniorhynchus giles (3273), cx. (culex) gelidus theobald (64), mansonia (mnd.) indiana edwards (735) ,an ... | 2008 | 18826037 |
| domestic pigs and japanese encephalitis virus infection, australia. | to determine whether relocating domestic pigs, the amplifying host of japanese encephalitis virus (jev), decreased the risk for jev transmission to humans in northern australia, we collected mosquitoes for virus detection. detection of jev in mosquitoes after pig relocation indicates that pig relocation did not eliminate jev risk. | 2008 | 18976557 |
| longitudinal studies of japanese encephalitis virus infection in vector mosquitoes in kurnool district, andhra pradesh, south india. | a 4-yr (2002-2006) entomological study was carried out in kurnool district, andhra pradesh state, south india, to identify the mosquito vectors of japanese encephalitis virus (family flaviviridae, genus flavivirus, jev). in total, 37,139 female mosquitoes belonging five genera and 18 species resting on vegetation were collected in villages and periurban areas at dusk. mosquito species composition and pattern of jev infection in mosquitoes varied in periurban and rural areas. in periurban area, c ... | 2009 | 19496437 |
| mosquito distribution and japanese encephalitis virus infection in the immigration bird (asian open-billed stork) nested area in pathum thani province, central thailand. | japanese encephalitis virus infection is a mosquito-borne emerging or re-emerging infectious disease in several countries. the ecology of this virus in nature includes amplifying avian or mammal hosts and mosquito vectors. infected immigration birds from epidemic areas may play important roles in the outbreak of the disease. the prevalence is high during the raining season in thailand and human cases have been reported from several provinces including bangkok suburbs. this study was conducted to ... | 2010 | 20155371 |
| the effects of climatic factors on the distribution and abundance of japanese encephalitis vectors in kurnool district of andhra pradesh, india. | climatic attributes have been associated with relative mosquito abundance and transmission of mosquito borne infections in many parts of the world, especially in warm and tropical climatic regions. the main objectives of this study were to assess the change in seasonal pattern of japanese encephalitis (je) vectors, their density, to elucidate whether the lagged climate variables (precipitation, temperature and humidity) are associated with je vector density, and to determine if temperature and p ... | 2010 | 20231770 |
| insecticidal and larvicidal activities of medicinal plant extracts against mosquitoes. | in recent years, use of environment friendly and biodegradable natural insecticides of plant origin have received renewed attention as agents for vector control because they are rich in bioactive chemicals, active against a limited number of species including specific target insects, and biodegradable. the present study was carried out to evaluate the adulticidal, repellent, and larvicidal activity of crude hexane, ethyl acetate, and methanol extracts of eight plants, viz. aristolochia indica l. ... | 2010 | 20689968 |
| larvicidal, repellent, and ovicidal activity of marine actinobacteria extracts against culex tritaeniorhynchus and culex gelidus. | the purpose of the present study was to assess the effect of crude extracts of marine actinobacteria on larvicidal, repellent, and ovicidal activities against culex tritaeniorhynchus and culex gelidus (diptera: culicidae). the early fourth instar larvae of c. tritaeniorhynchus and c. gelidus, reared in the laboratory, were used for larvicidal, ovicidal, and repellent assay with crude extracts of actinobacteria. saccharomonospora spp. (lk-1), streptomyces roseiscleroticus (lk-2), and streptomyces ... | 2010 | 21153420 |
| breeding patterns of the je vector culex gelidus and its insect predators in rice cultivation areas of northern peninsular malaysia. | japanese encephalitis (je) virus activity is an important cause of viral encephalitis in southeast asia. in malaysia, jev activity has been first detected in culex gelidus in 1976. since then, no study has fully addressed the seasonal dynamics of this mosquito. as irrigated rice production expands, the incidence of jev vectors, particularly cx. gelidus is expected to increase. we surveyed penang island to determine the breeding patterns of cx. gelidus and their potential insect predators, in rel ... | 2010 | 21399580 |
| mosquito communities and disease risk influenced by land use change and seasonality in the australian tropics. | anthropogenic land use changes have contributed considerably to the rise of emerging and re-emerging mosquito-borne diseases. these diseases appear to be increasing as a result of the novel juxtapositions of habitats and species that can result in new interchanges of vectors, diseases and hosts. we studied whether the mosquito community structure varied between habitats and seasons and whether known disease vectors displayed habitat preferences in tropical australia. | 2016 | 27388293 |
| development and field evaluation of the sentinel mosquito arbovirus capture kit (smack). | although sentinel animals are used successfully throughout the world to monitor arbovirus activity, ethical considerations and cross-reactions in serological assays highlight the importance of developing viable alternatives. here we outline the development of a passive sentinel mosquito arbovirus capture kit (smack) that allows for the detection of arboviruses on honey-baited nucleic acid preservation cards (flinders technology associates; fta®) and has a similar trap efficacy as standard light ... | 2015 | 26444264 |
| review of insecticide resistance and behavioral avoidance of vectors of human diseases in thailand. | physiological resistance and behavioral responses of mosquito vectors to insecticides are critical aspects of the chemical-based disease control equation. the complex interaction between lethal, sub-lethal and excitation/repellent ('excito-repellent') properties of chemicals is typically overlooked in vector management and control programs. the development of "physiological" resistance, metabolic and/or target site modifications, to insecticides has been well documented in many insect groups and ... | 2013 | 24294938 |
| biological transmission of arboviruses: reexamination of and new insights into components, mechanisms, and unique traits as well as their evolutionary trends. | among animal viruses, arboviruses are unique in that they depend on arthropod vectors for transmission. field research and laboratory investigations related to the three components of this unique mode of transmission, virus, vector, and vertebrate host, have produced an enormous amount of valuable information that may be found in numerous publications. however, despite many reviews on specific viruses, diseases, or interests, a systematic approach to organizing the available information on all f ... | 0 | 16223950 |
| mosquitoes of western yunnan province, china: seasonal abundance, diversity, and arbovirus associations. | the western borderland between yunnan province, china, and myanmar is characterized by a climate that facilitates year-round production of mosquitoes. numerous mosquito-transmitted viruses, including japanese encephalitis virus circulate in this area. this project was to describe seasonal patterns in mosquito species abundance and arbovirus activity in the mosquito populations. | 2013 | 24146951 |
| comparison of genotypes i and iii in japanese encephalitis virus reveals distinct differences in their genetic and host diversity. | japanese encephalitis (je) is an arthropod-borne disease associated with the majority of viral encephalitis cases in the asia-pacific region. the causative agent, japanese encephalitis virus (jev), has been phylogenetically divided into five genotypes. recent surveillance data indicate that genotype i (gi) is gradually replacing genotype iii (giii) as the dominant genotype. to investigate the mechanism behind the genotype shift and the potential consequences in terms of vaccine efficacy, human c ... | 2014 | 25056890 |
| surveillance of japanese encephalitis virus infection in mosquitoes in vietnam from 2006 to 2008. | japanese encephalitis virus (jev) infection in mosquitoes was monitored in vietnam from 2006 to 2008. a total of 15,225 mosquitoes, identified as 26 species in five genera were collected and 12,621 were grouped into 447 pools for examination of jev infection by assays for cytopathic effects in c6/36 cells and by rt-pcr to detect flavivirus rna. three jev strains were isolated from culex tritaeniorhynchus giles collected in northern and southern vietnam and two jev strains were isolated from cule ... | 2013 | 23358634 |
| seasonal abundance and potential of japanese encephalitis virus infection in mosquitoes at the nesting colony of ardeid birds, thailand. | to investigate the abundance and seasonal dynamics of mosquitoes, and to detect japanese encephalitis virus (jev) in these mosquitoes at the nesting colony of ardeid birds. | 0 | 23620839 |
| seasonal abundance & role of predominant japanese encephalitis vectors culex tritaeniorhynchus & cx. gelidus theobald in cuddalore district, tamil nadu. | japanese encephalitis (je) is the leading cause of viral encephalitis in asia. the first major je outbreak occurred in 1978 and since 1981 several outbreaks had been reported in the cuddalore district (erstwhile south arcot), tamil nadu, india. entomological monitoring was carried out during january 2010 - march 2013, to determine the seasonal abundance and transmission dynamics of the vectors of je virus, with emphasis on the role of culex tritaeniorhynchus and cx. gelidus. | 0 | 26905238 |
| monitoring of malaria, japanese encephalitis and filariasis vectors. | vector monitoring in military stations would help in protecting the armed forces from vector borne diseases such as malaria, japanese encephalitis and filariasis. | 2013 | 24843200 |
| mosquito vector diversity across habitats in central thailand endemic for dengue and other arthropod-borne diseases. | recent years have seen the greatest ecological disturbances of our times, with global human expansion, species and habitat loss, climate change, and the emergence of new and previously-known infectious diseases. biodiversity loss affects infectious disease risk by disrupting normal relationships between hosts and pathogens. mosquito-borne pathogens respond to changing dynamics on multiple transmission levels and appear to increase in disturbed systems, yet current knowledge of mosquito diversity ... | 2013 | 24205420 |
| vector databank in the indian armed forces. | medical intelligence of disease vectors deals with understanding vector distribution and control. | 2011 | 27408077 |
| japanese encephalitis : is routine immunization required? | japanese encephalitis is the leading cause of viral encephalitis in asia. in endemic areas annual incidence ranges from 10-100 per 100000 population. case fatality averages 30% and a high percentage of the survivors are left with permanent neuropshychiatric sequelae. there is no effective drug treatment for this disease. in recent decades, japanese encephalitis virus has caused epidemics in previously unaffected countries like india, myanmar, nepal, sri lanka, thailand and viet nam. no effective ... | 2011 | 27407808 |
| occurrence of japanese encephalitis virus mosquito vectors in relation to urban pig holdings. | japanese encephalitis virus (jev) is transmitted to humans from pigs or birds by mosquitoes. in this study, the association between urban pig keeping and mosquito vectors was analyzed. a total of 7, 419 mosquitoes were collected overnight in urban households with and without pigs in can tho city, vietnam. the most prevalent vectors were culex tritaeniorhynchus (36%), cx. gelidus (24%), and cx. quinquefasciatus (15%), which were present in all parts of the city. pigs were associated with increase ... | 2012 | 23033401 |
| salinity-tolerant larvae of mosquito vectors in the tropical coast of jaffna, sri lanka and the effect of salinity on the toxicity of bacillus thuringiensis to aedes aegypti larvae. | dengue, chikungunya, malaria, filariasis and japanese encephalitis are common mosquito-borne diseases endemic to sri lanka. aedes aegypti and aedes albopictus, the major vectors of dengue, were recently shown to undergo pre-imaginal development in brackish water bodies in the island. a limited survey of selected coastal localities of the jaffna district in northern sri lanka was carried out to identify mosquito species undergoing pre-imaginal development in brackish and saline waters. the effect ... | 2012 | 23174003 |
| discovery of the first insect nidovirus, a missing evolutionary link in the emergence of the largest rna virus genomes. | nidoviruses with large genomes (26.3-31.7 kb; 'large nidoviruses'), including coronaviridae and roniviridae, are the most complex positive-sense single-stranded rna (ssrna+) viruses. based on genome size, they are far separated from all other ssrna+ viruses (below 19.6 kb), including the distantly related arteriviridae (12.7-15.7 kb; 'small nidoviruses'). exceptionally for ssrna+ viruses, large nidoviruses encode a 3'-5'exoribonuclease (exon) that was implicated in controlling rna replication fi ... | 2011 | 21931546 |
| regulation of cell survival and death during flavivirus infections. | flaviviruses, ss(+) rna viruses, include many of mankind's most important pathogens. their pathogenicity derives from their ability to infect many types of cells including neurons, to replicate, and eventually to kill the cells. flaviviruses can activate tumor necrosis factor α and both intrinsic (bax-mediated) and extrinsic pathways to apoptosis. thus they can use many approaches for activating these pathways. infection can lead to necrosis if viral load is extremely high or to other types of c ... | 0 | 24921001 |
| screening for adulticidal activity against anopheles arabiensis in ten plants used as mosquito repellent in south africa. | due to the development of resistance to synthetic insecticides, adverse effects to human health, non-target organisms and the environment, there is an urgent need to develop new insecticides, which are effective, safe, biodegrable and target-specific. this study was undertaken to evaluate the adulticidal activity of 10 plants used traditionally as mosquito repellents in south africa. | 2014 | 24884500 |
| in vitro larvicidal and antioxidant activity of dihydrophenanthroline-3-carbonitriles. | many naturally occurring and synthetic compounds containing dihydrocyanopyridine and cyanopyran moiety show pharmacological properties. the aim of this study is to investigate the larvicidal and antioxidant potential of dihydrophenanthroline-3-carbonitrile derivatives 4a-f. a novel series of 2-amino-10-chloro-4,12-diphenyl-1,4,5,6-tetrahydrobenzo[j][1,7]phenanthroline-3-carbonitrile derivatives were synthesized by reacting different substituted acridine chalcones through michel addition. the com ... | 2014 | 24868553 |
| sampling design influences the observed dominance of culex tritaeniorhynchus: considerations for future studies of japanese encephalitis virus transmission. | mosquito sampling during japanese encephalitis virus (jev)-associated studies, particularly in india, has usually been conducted via aspirators or light traps to catch mosquitoes around cattle, which are dead-end hosts for jev. high numbers of culex tritaeniorhynchus, relative to other species, have often been caught during these studies. less frequently, studies have involved sampling outdoor resting mosquitoes. we aimed to compare the relative abundance of mosquito species between these two pr ... | 2016 | 26726881 |
| detection of west nile virus in six mosquito species in synchrony with seroconversion among sentinel chickens in india. | west nile virus (wnv) is a zoonotic flavivirus maintained in mosquito-bird transmission cycle. although humans are accidental hosts, fatal outcomes following wnv infection have been reported from india. studies have identified wnv as an important etiological agent causing acute encephalitis syndrome in assam, northeast india. while circulation of wnv is evident, the role of vectors and avian hosts involved in the transmission remains unclear. in this study we identified local mosquito species fo ... | 2017 | 28061903 |
| intensive circulation of japanese encephalitis virus in peri-urban sentinel pigs near phnom penh, cambodia. | despite the increased use of vaccination in several asian countries, japanese encephalitis (je) remains the most important cause of viral encephalitis in asia in humans with an estimated 68,000 cases annually. considered a rural disease occurring mainly in paddy-field dominated landscapes where pigs are amplifying hosts, je may nevertheless circulate in a wider range of environment given the diversity of its potential hosts and vectors. the main objective of this study was to assess the intensit ... | 2016 | 27926937 |
| dengue hemorrhagic fever at 60 years: early evolution of concepts of causation and treatment. | during the decade of the 1960s, the epidemiology of a new dengue disease, dengue hemorrhagic fever and dengue shock syndrome (dhf/dss), was described by collaborative research performed by thai scientists from many institutions and by workers at the u.s. army's seato medical research laboratory in bangkok, thailand. careful clinical and physiological studies provided the initial description of dss. dss cases were caused by each of the four dengue viruses (denv) and not chikungunya (chik) virus o ... | 0 | 26085471 |
| lead levels of culex mosquito larvae inhabiting lead utilizing factory. | to determine lead level primarily in culex quinquefasciatus (cx. quinquefasciatus), and culex gelidus (cx. gelidus) larvae inhabiting lead consuming factories, and to putatively estimate eco-toxicological impact of effluents from the firms. | 0 | 23569727 |
| species composition and population dynamics of malaria vectors in three previously ignored aquatic systems in sri lanka. | in 2015 alone there were an estimated 214 million new cases of malaria across the globe and 438,000 deaths were reported. although indigenous malaria has not been reported in sri lanka since 2012, to date 247 imported cases of malaria have been identified. knowledge of the locations, behaviour and vectorial capacity of potential malarial vectors is therefore needed to prevent future outbreaks. attention is now being focused on some previously ignored habitats. | 2016 | 27165184 |
| complete genome sequencing of four geographically diverse strains of batai virus. | batai virus (batv) is a widely distributed but poorly studied member of the orthobunyavirus genus in the family bunyaviridae and is of particular interest as a known participant in natural reassortment events. both research and surveillance efforts on this and other related viruses have been hampered by the lack of available full-length sequence data covering all three genomic segments. here, we report the complete genome sequence of four batv strains (mm2222, chittoor/ig-20217, ugmp-6830, and m ... | 0 | 23166251 |
| does fluoride influence oviposition of anopheles stephensi in stored water habitats in an urban setting? | the physico-chemical characteristics of lentic aquatic habitats greatly influence mosquito species in selecting suitable oviposition sites; immature development, pupation and adult emergence, therefore are considerations for their preferred ecological niche. correlating water quality parameters with mosquito breeding, as well as immature vector density, are useful for vector control operations in identifying and targeting potential breeding habitats. | 2016 | 27829419 |
| surveillance of batai virus in bovines from germany. | to estimate the veterinary importance of batai virus (batv), we investigated the presence of batv-specific antibodies and batv rna in 548 bovines from southwest germany, and we demonstrated that 3 cattle serum samples contained batv-neutralizing antibodies, resulting in a seroprevalence of 0.55%. thus, our results confirm local transmission and indicate cattle as potential hosts of batv in southwest germany. | 2015 | 25878253 |
| projecting overwintering regions of the beet armyworm, spodoptera exigua in china using the climex model. | the beet armyworm, spodoptera exigua hübner (lepidoptera: noctuidae) is a serious agricultural pest worldwide. however, population sources of s. exigua in outbreak regions are still vague due to the lack of understanding the distribution of overwintering regions, especially in china. in the present study, the potential overwintering regions of s. exigua in china are projected using the method of compare location in the climex model in order to understand the population sources in outbreak region ... | 0 | 22934543 |
| how zoophilic japanese encephalitis vector mosquitoes feed on humans. | japanese encephalitis virus (jev) is the most frequent cause of mosquito-borne encephalitis in asian countries. several culicine species are potential vectors. the primary jev vectors feed mainly on cows (a dead-end host for jev), pigs (an amplifying host), and, occasionally, humans (a dead-end host). it is essential to determine blood-feeding patterns to understand the transmission cycle of the disease. here we review blood-feeding characteristics of the primary jev vectors culex tritaeniorhync ... | 2017 | 28082626 |
| vectorial capacity of culex gelidus (theobald) mosquitoes to certain viruses of public health importance in india. | culex gelidus, a widely prevalent mosquito in india and southeast asia region, is an important vector of japanese encephalitis virus (jev). experimental studies have shown its potential to transmit west nile, kunjin, murray valley encephalitis and ross river viruses. an attempt was therefore made to study its susceptibility and vector competence to some of the arboviruses of public health importance in india. | 2015 | 26119548 |
| replication potential and different modes of transmission of west nile virus in an indian strain of culex gelidus theobald (diptera: culicidae) mosquitoes. | culex gelidus mosquito, an important vector of japanese encephalitis virus, has shown to transmit west nile virus (wnv), kunjin and murray valley encephalitis viruses experimentally. an attempt was, therefore, made to study the replication kinetics and vector competence of an indian strain of cx. gelidus to wnv. | 2014 | 25540967 |
| culex gelidus: an emerging mosquito vector with potential to transmit multiple virus infections. | culex gelidus theobald has emerged as a major vector of japanese encephalitis virus (jev) in india, southeast asian countries and australia. the species has expanded its geographic distribution from the indian subcontinent to japan, china, other southeast asian countries, island nations in australasian region and australia. in recent years, a sudden increase in its population especially in the urban and sub-urban areas has been observed in several countries, thus, becoming a dominant mosquito sp ... | 2014 | 25540955 |
| impact of weather variables on mosquitoes infected with japanese encephalitis virus in kurnool district, andhra pradesh. | to assess the virus infection in mosquitoes during different seasons and correlated with various climatic factors. | 2012 | 22546646 |
| species composition and habitat characterization of mosquito (diptera: culicidae) larvae in semi-urban areas of dhaka, bangladesh. | mosquito larvae are purely aquatic and develop in water bodies, the type of which is more or less specific to each species. therefore, a study was carried out to identify the habitat characters of different mosquito species along with their species composition in semi-urban area of dhaka in bangladesh during the month of may and june 2012. a total of 6088 mosquito larvae belonging to 12 species (aedes aegypti, aedes albopictus, anopheles barbirostris, anopheles peditaeniatus, anopheles vagus, cu ... | 2016 | 27241953 |
| novel and simple approach using synthesized nickel nanoparticles to control blood-sucking parasites. | the present study was on assessment of the anti-parasitic activities of nickel nanoparticles (ni nps) against the larvae of cattle ticks rhipicephalus (boophilus) microplus and hyalomma anatolicum (a.) anatolicum (acari: ixodidae), fourth instar larvae of anopheles subpictus, culex quinquefasciatus and culex gelidus (diptera: culicidae). the metallic ni nps were synthesized by polyol process from ni-hydrazine as precursor and tween 80 as both the medium and the stabilizing reagent. the synthesiz ... | 2013 | 23040768 |
| larvicidal activity of green synthesized silver nanoparticles using bark aqueous extract of ficus racemosa against culex quinquefasciatus and culex gelidus. | to investigate the larvicidal activity of synthesized silver nanoparticles (ag nps) utilizing aqueous bark extract of ficus racemosa (f. racemosa) was tested against fourth instar larvae of filariasis vector, culex quinquefasciatus (cx. quinquefasciatus) and japanese encephalitis vectors, culex gelidus (cx. gelidus). | 2013 | 23339909 |
| synthesis, spectral characterization and larvicidal activity of acridin-1(2h)-one analogues. | acridin-1(2h)-one analogue of 7-chloro-3,4-dihydro-9-phenyl-2-[(pyridine-2yl) methylene] acridin-1(2h)-one, 5 was prepared by using 7-chloro-3,4-dihydro-9-phenylacridin-1(2h)-one, 3 and picolinaldehyde, 4 in the presence of koh at room temperature. these compounds were characterized by analytical and spectral analyses. the purpose of the present study was to assess the efficacy of larvicidal and repellent activity of synthesized 7-chloro-3,4-dihydro-9-phenyl-acridin-1(2h)-one analogues such as c ... | 2012 | 22579326 |
| first records of culex gelidus from australia. | culex gelidus theobald was recorded for the 1st time in australia in may 1999 from 2 locations (brisbane and mackay, queensland) approximately 820 km apart. larval samples were collected from a semi-permanent freshwater swamp and an open drain and reared to adults in laboratories. implications for australia are discussed. | 2001 | 11345424 |
| larval susceptibility status of culex (culex) gelidus theobald, against four organophosphorus compounds in mysore city. | | 1991 | 1725873 |
| colonization of culex gelidus theobald and some resultant effects on its biology. | | 1962 | 13969389 |
| ddt susceptibility and selection of the larvae of a laboratory-colony of culex gelidus theobald. | | 1962 | 13981116 |