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arbovirus isolations from mosquitoes: kano plain, kenya.arbovirus isolation attempts on 324,486 mosquitoes captured over a four-year period on the kano plain, kenya, yielded 15 isolates including pongola (six strains), ilesha (three strains), germiston (two strains), sindbis (one strain), barur (one strain) and two viruses which could not be characterized. mansonia uniformis, anopheles gambiae and culex antennatus constituted 70% of the total collection and accounted for all of the isolates except one, which came from anopheles funestus.197724288
rift valley fever epizootic in the central highlands of madagascar.between february and april 1991, unusual numbers of bovine abortion around antananarivo (central highlands, madagascar) were reported by official veterinary services. rift valley fever (rvf) virus isolations were made from sixteen aborted foetuses and one dead calf in different foci. using monoclonal antibodies, the isolated viruses were found to be different from the 1979 rvf strains isolated in madagascar from mosquitoes and human laboratory infection, and closer to african rvf strains. in a b ...19921297176
distribution and bionomics of egyptian culex antennatus (becker). 19873693957
[the culicidian fauna and its nuisance in kinshasha (zaire)].a public health study to inventory bloodsucking mosquitoes was conducted in kinshasa and its regions. 20 culicidian species were represented by 7 anopheles, 6 culex, 5 aedes and 2 mansonia. in general, the number of bites/man/night (b/m/n) was in average 141.5 of cx. quinquefasciatus, 60.1 of cx. antennatus, 21.1 of m. africana, 16.3 of an. gambiae and 7.7 of m. uniformis. the nuisance is different from region to other. culex quinquefasciatus is the most abundant and aggressive species in the ur ...19938504267
identification of endemic foci of filariasis by examination of mosquitoes for microfilariae.studies were conducted in the nile delta of egypt to determine the feasibility of detecting wuchereria bancrofti microfilariae (mf) in mosquitoes as a primary surveillance method for the identification of filariasis-endemic villages. initial experimental studies evaluated the ingestion, survival, and migration rates of w. bancrofti mf in culex pipiens and culex antennatus after mosquitoes were fed on infected volunteers. in 2 villages, 1,684 bloodfed mosquitoes were dissected during the night im ...19958825503
vector competence of selected african mosquito (diptera: culicidae) species for rift valley fever virus.outbreaks of rift valley fever (rvf) in egypt, yemen, and saudi arabia have indicated the potential for this disease to spread from its enzootic areas in sub-saharan africa. because little is known about the potential for most african mosquito species to transmit rvf virus (family bunyaviridae, genus phlebovirus, rvfv), we conducted studies to determine the vector competence of selected african species of mosquitoes for this virus. all eight species tested [aedes palpalis (newstead), aedes mcint ...200818283949
detection, isolation, and genetic characterization of rift valley fever virus from anopheles (anopheles) coustani, anopheles (anopheles) squamosus, and culex (culex) antennatus of the haute matsiatra region, madagascar.abstract following veterinary alerts of rift valley fever (rvf) in the districts of fianarantsoa i and ii in november 2008 and in the district of ambalavao in april 2009, entomological and virological investigations were carried out to identify the mosquito species that could act as rvf virus (rvfv) vectors in the region. a total of 12,785 adult mosquitoes belonging to 5 genera and 21 species were collected. after identification, mosquitoes were pooled by species, sex, and female status (fed or ...201021028960
virus isolations and high population density implicate culex antennatus (becker) (diptera: culicidae) as a vector of rift valley fever virus during an outbreak in the nile delta of egypt.in june, 2003, egypt's hospital-based electronic disease surveillance system began to record increased cases of acute febrile illness from governorates in the nile delta. in response to a request for assistance from the egyptian ministry of health and the world health organization (who), the u.s. naval medical research unit no. 3 (namru-3) provided assistance in identifying the cause and extent of this outbreak. testing of human clinical samples (n=375) from nine governorates in egypt identified ...201121570939
reemergence of rift valley fever, mauritania, 2010.a rift valley fever (rvf) outbreak in humans and animals occurred in mauritania in 2010. thirty cases of rvf in humans and 3 deaths were identified. rvfv isolates were recovered from humans, camels, sheep, goats, and culex antennatus mosquitoes. phylogenetic analysis of isolates indicated a virus origin from western africa.024447381
the mosquitoes (diptera: culidae) of seychelles: taxonomy, ecology, vectorial importance, and identification keys.during recent periods, the islands of the republic of seychelles experienced many diseases such as dengue, chikungunya, bancroft's filaria and malaria. mosquitoes transmit the agents that cause these diseases. published information on mosquitoes in the seychelles is notably dispersed in the literature. the maximum number of species obtained on a single field survey does not exceed 14 species.201222999320
population ecology of mosquitoes and the status of bancroftian filariasis in el dakahlia governorate, the nile delta, egypt.mosquitoes were surveyed (oct. 2010 & apr. - oct. 2011) in some localities representing 13 centers of el-dakahlia governorate. six mosquito species were collected: culex pipiens, cx. antennatus, cx. perexiguus, ochlerotatus detritus, anopheles pharoensis and an. tenebrosus. culex pipiens was predominating (ca 79% larvae, 51% adults). culex antennatus and cx. perexiguus were also common. of the four types of the breeding habitats, the drainage canals were the most productive (53.4% larvae). for t ...201323697019
mosquitoes of western uganda.the mosquito fauna in many areas of western uganda has never been studied and is currently unknown. one area, bwamba county, has been previously studied and documented but the species lists have not been updated for >40 yr. this paucity of data makes it difficult to determine which arthropod-borne viruses pose a risk to human or animal populations. using co2 baited-light traps, from 2008 through 2010, 67,731 mosquitoes were captured at five locations in western uganda including mweya, sempaya, m ...201223270157
biology of mosquitoes that are potential vectors of rift valley fever virus in different biotopes of the central highlands of madagascar.there were epidemic-epizootics of rift valley fever (rvf) affecting humans and cattle in madagascar in the district of anjozorobe in 2008. little is known about the role of malagasy mosquitoes in the circulation of rvf virus. therefore, we investigated the species diversity, dynamics and biology of potential rvf virus vectors in the rainforest, rainforest edge (village of anorana), and savanna biotope (village of antanifotsy) of this district between november 2008 and july 2010. we captured 56,6 ...201323802456
a review of mosquitoes associated with rift valley fever virus in madagascar.rift valley fever (rvf) is a viral zoonotic disease occurring throughout africa, the arabian peninsula, and madagascar. the disease is caused by a phlebovirus (rvf virus [rvfv]) transmitted to vertebrate hosts through the bite of infected mosquitoes. in madagascar, the first rvfv circulation was reported in 1979 based on detection in mosquitoes but without epidemic episode. subsequently, two outbreaks occurred: the first along the east coast and in the central highlands in 1990 and 1991 and the ...201525732680
species diversity, abundance, and host preferences of mosquitoes (diptera: culicidae) in two different ecotypes of madagascar with recent rvfv transmission.mosquito diversity and abundance were examined in six madagascan villages in either arid (toliary ii district) or humid (mampikony district) ecotypes, each with a history of rift valley fever virus transmission. centers for disease control and prevention light traps without co2 (lt) placed near ruminant parks and animal-baited net trap (nt) baited with either zebu or sheep/goat were used to sample mosquitoes, on two occasions between march 2011 and october 2011. culex tritaeniorhynchus (giles) w ...201526336259
mosquitoes (diptera: culicidae) in mauritania: a review of their biodiversity, distribution and medical importance.although mosquitoes (diptera: culicidae) are important disease vectors, information on their biodiversity in mauritania is scarce and very dispersed in the literature. data from the scientific literature gathered in the country from 1948 to 2016 were collected and analyzed. overall 51 culicid species comprising 17 anopheles spp., 14 aedes spp., 18 culex spp. and two mansonia spp. have been described in mauritania among which anopheles arabiensis, aedes vexans, culex poicilipes and culex antennat ...201728103955
remote sensing as a tool for mapping mosquito breeding habitats and associated health risk to assist control efforts and development plans: a case study in wadi el natroun, egypt.limited mosquito ground surveys were combined with remote sensing and gis technologies to identify mosquito breeding habitats in natroun lakes area and to delineate associated health risks. mosquito larval surveys were carried out in a small area to characterize positive breeding habitats and determine their geographic coordinates. mosquitoes (anopheles multicolor, culex antennatus and cx. theileri) were found breeding in water-flooded habitats with dense vegetation cover spatially associated to ...200415287164
isolation of west nile and sindbis viruses from mosquitoes collected in the nile valley of egypt during an outbreak of rift valley fever.as part of an evaluation of potential vectors of arboviruses during a rift valley fever (rvf) outbreak in the nile valley of egypt in august 1993, we collected mosquitoes in villages with known rvf viral activity. mosquitoes were sorted to species, pooled, and processed for virus isolation both by intracerebral inoculation into suckling mice and by inoculation into cell culture. a total of 33 virus isolates was made from 36,024 mosquitoes. viruses were initially identified by indirect fluorescen ...200211931267
odor-mediated host preferences of west african mosquitoes, with particular reference to malaria vectors.the role of odors in mosquito host preferences was studied in a village near ouagadougou, burkina faso. two odor-baited entry-traps were put beside one another and a choice of host odor-laden air was blown out of them. odors of a human and a calf (of similar mass) were drawn from two tents in which each was separately concealed. allowances were made for trap position, differences in human-subject attractiveness, co2 levels, and trap contamination with alternative host odors. choices for the huma ...19989452293
feeding patterns of mosquitoes collected in the senegal river basin.mosquitoes were collected with light traps baited with dry ice at 16 locations in senegal during the rainy season of 1988. of 62,055 mosquitoes identified, 1,384 (2.2%), representing 25 species in 4 genera, were bloodfed. mosquito bloodmeals were screened by enzyme-linked immunosorbent assay against antisera to humans, bovines, goats, sheep and chickens. overall, 88% of the bloodmeals tested were identified. bloodmeals from 5 species of culex mosquitoes comprised 82% of the number tested. culex ...19911686446
a study of the host selection patterns of the mosquitoes of the kisumu area of kenya.the results of 12,168 precipitin tests on blood meals of mosquitoes of the kano plain caught by a variety of catching techniques indicate that to gain an accurate overall picture of feeding patterns both the indoor and the outdoor biotope must be sampled. cdc light traps operated inside houses and monkswood type light traps operated under the outside eaves of houses were found to collect larger numbers of blood fed specimens from a wider range of species than battery driven aspirators collecting ...19752997
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