| experimental assessment of the vector competence of culex (culex) neavei theobald with west nile and sindbis viruses in south africa. | culex univittatus is the maintenance vector of west nile (wn) and sindbis (sin) viruses on the inland plateau of south africa and also transfers infection to man. both viruses have frequently been isolated from this mosquito and human immunity is high on the plateau. in the natal lowlands where cx univittatus is replaced by cx neavei, apparently the main vector there, immune rates are low and few isolations have been made from this species. vector competence experiments were carried out with cx ... | 1986 | 3024364 |
| aberrant south african mosquitoes (diptera: culicidae): gynandromorphs and morphologic variants. | two polar gynandromorphs are described, one of culex (culex) neavei theobald and the other of culex (culex) pipiens. these are the first gynandromorphs of these 2 species collected in south africa. a single variant of aedes (stegomyia) metallicus and 16 variants of aedes (stegomyia) ledgeri are also described, all of which have variation in scutal morphology. | 1998 | 10084144 |
| vector competence of culex neavei (diptera: culicidae) for usutu virus. | usutu virus (usuv), a flavivirus belonging to the japanese encephalitis serocomplex, was isolated for the first time from a culex neavei mosquito in 1959 in south africa. despite multiple isolations of usuv from cx. neavei in africa, its vector competence remains unproven. therefore, we infected cx. neavei orally with the usuv reference strain and used reverse transcription-polymerase chain reaction and an indirect immunofluorescence assay to detect virus in bodies, legs, wings, and saliva of mo ... | 0 | 22665607 |
| vector competence of culex neavei and culex quinquefasciatus (diptera: culicidae) from senegal for lineages 1, 2, koutango and a putative new lineage of west nile virus. | west nile virus (wn virus) is one of the most widespread arbovirus and exhibits a great genetic diversity with 8 lineages, at least 4 (1, 2, koutango, and putative new) are present in africa. in west africa, culex neavei and culex quinquefasciatus are considered as potential vectors for wn virus transmission in sylvatic or urban context. we analyzed the vector competence of these culex species from senegal for african lineages and envelope proteins sequences of viral strains used. we showed that ... | 2014 | 24567319 |
| 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 ... | 2012 | 23270157 |
| using maldi-tof ms to identify mosquitoes collected in mali and their blood meals. | matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (maldi-tof ms) has been recently described as an innovative and effective tool for identifying arthropods and mosquito blood meal sources. to test this approach in the context of an entomological survey in the field, mosquitoes were collected from five ecologically distinct areas of mali. we successfully analysed the blood meals from 651 mosquito abdomens crushed on whatman filter paper (wfps) in the field using maldi-t ... | 2018 | 29409547 |
| mosquitoes of northwestern uganda. | despite evidence of arbovirus activity in northwestern uganda (west nile sub-region), there is very limited information on the mosquito fauna of this region. the only published study reported 52 mosquito species in northwestern uganda but this study took place in 1950 and the information has not been updated for more than 60 yr. in january and june 2011, co2 baited-light traps were used to collect 49,231 mosquitoes from four different locations, paraa (9,487), chobe (20,025), sunguru (759), and ... | 2018 | 29444287 |
| west nile virus transmission in sentinel chickens and potential mosquito vectors, senegal river delta, 2008-2009. | west nile virus (wnv) is an arthropod-borne flavivirus usually transmitted to wild birds by culex mosquitoes. humans and horses are susceptible to wnv but are dead-end hosts. wnv is endemic in senegal, particularly in the senegal river delta. to assess transmission patterns and potential vectors, entomological and sentinel serological was done in ross bethio along the river senegal. three sentinel henhouses (also used as chicken-baited traps) were set at 100 m, 800 m, and 1,300 m from the river, ... | 2013 | 24084679 |
| [the presence of the culex (culex) neavei mosquito in madagascar, its relevance in the transmission of arboviruses]. | a study was made of 25 male and 43 female mosquitoes belonging to the culex (culex) univittatus group, from different localities in madagascar, indian ocean. this showed that culex neavei theobald, 1906 is present on the island, at least in the tsiroanomandidy region. as demonstrated previously, cx. univitatus theobald, 1901 is also present. because of the presence of some atypical forms, firm identifications was made only in males according to the structure of the leaflet of the sub-apical lobe ... | 2007 | 2633711 |
| temporal distribution and spatial pattern of abundance of the rift valley fever and west nile fever vectors in barkedji, senegal. | the temporal distribution and spatial pattern of abundance of mosquito vectors of rift valley fever (rvf) and west nile fever (wnf) were studied during the 2005 and 2006 rainy seasons at barkedji, senegal. mosquitoes were collected every two weeks with cdc light traps with dry ice at 79 sites including temporary ponds, barren, shrubby savannah, wooded savannah, steppes, and villages at different distances (between 0 and 600 m) from the nearest pond. the temporal distributions of these vectors va ... | 2011 | 22129415 |
| culex neavei theobald, as a possible transmitter of hepatozoon matruhensis to the egyptian snake psammophis schokari. | stained smears of culex neavei females infected with hepattozoon matruhensis from psammophis schokari and kept at 20 +/- 1 degrees c showed the complete developmental stages of the parasite. however, no detection of sporozoites was monitored when females were kept at 30 +/- 1 degrees c. a successful infection of p. schokari was carried out in the laboratory by c. neavei bites. the effect of infection on the mosquito longevity was insignificant (p>0.05) under low temperature and highly significan ... | 2006 | 16605095 |
| mosquito vectors of the 1998-1999 outbreak of rift valley fever and other arboviruses (bagaza, sanar, wesselsbron and west nile) in mauritania and senegal. | following an outbreak of rift valley fever (rvf) in south-eastern mauritania during 1998, entomological investigations were conducted for 2 years in the affected parts of senegal and mauritania, spanning the sénégal river basin. a total of 92 787 mosquitoes (diptera: culicidae), belonging to 10 genera and 41 species, were captured in light traps. in senegal, culex poicilipes (41%) and mansonia uniformis (39%) were the most abundant species caught, whereas aedes vexans (77%) and cx. poicilipes (1 ... | 2005 | 15958020 |
| mosquito production and species succession from an area of irrigated rice fields in the gambia, west africa. | the succession of mosquito species and their abundance was observed through one cycle of dry-season irrigated rice cultivation near bansang in the gambia. the study covered a 21-week period, february-june 1975. mosquitoes were sampled using a single suction trap located in a dry field beside the rice fields. few mosquitoes were present before irrigation began. anopheles gambiae s.1., a. rufipes and culex neavei reached peak numbers 4 weeks after full-scale irrigation began and then declined in a ... | 1983 | 6142963 |
| mosquitoes (diptera: culicidae) and mosquito-borne diseases in mali, west africa. | mosquito-borne diseases cause major human diseases in almost every part of the world. in west africa, and notably in mali, vector control measures help reduce the impact of mosquito-borne diseases, although malaria remains a threat to both morbidity and mortality. the most recent overview article on mosquitoes in mali was published in 1961, with a total of 88 species. our present review focuses on mosquitoes of medical importance among which the anopheles vectors of plasmodium and filaria, as we ... | 2018 | 30103823 |
| evaluation of the performance of different traps for sampling usutu and west nile viruses and mosquito (diptera: culicidae) vectors in senegal. | an efficient trapping tool is one of the most important factors in surveillance and research on arboviruses and their vectors. in the current study, we tested the efficiency of several traps for sampling west nile (wnv) and usutu (usuv) viruses and their vectors in senegal during 2013. a total of 15,527 mosquitoes (diptera: culicidae), 94.3% females, were collected. among the known arbovirus vectors, mansonia uniformis (theobald) (diptera: culicidae) was the most abundant (46.5%), followed by cu ... | 2019 | 30124969 |
| use of maldi-tof ms for the identification of chad mosquitoes and the origin of their blood meal. | matrix-assisted desorption/ionization time-of-flight mass spectrometry (maldi-tof ms) is a clinical microbiology tool for the systematic identification of microorganisms. it has recently been presented as an innovative tool for the rapid and accurate identification of mosquitoes and their blood meal. to evaluate the capacity of this tool to identify mosquitoes collected in a tropical environment and preserved with silica gel, we analyzed 188 mosquitoes of different species collected in chad, whi ... | 2019 | 30526738 |