| classification of immature stage habitats of culicidae (diptera) collected in córdoba, argentina. | in order to classify mosquito immature stage habitats, samples were taken in 42 localities of córdoba province, argentina, representing the phytogeographic regions of chaco, espinal and pampa. immature stage habitats were described and classified according to the following criteria: natural or artificial; size; location related to light and neighboring houses; vegetation; water; permanence, movement, turbidity and ph. four groups of species were associated based on the habitat similarity by mean ... | 1996 | 8734943 |
| transmission of eastern equine encephalomyelitis virus in central alabama. | a site near tuskegee, alabama was examined for vector activity of eastern equine encephalomyelitis (eee) virus in 2001. more than 23,000 mosquitoes representing 8 genera and 34 species were collected during a 21-week period, and five species, culiseta melanura, aedes vexans, coquillettidia perturbans, culex erraticus, and uranotaenia sapphirina, were examined for the presence of virus using a nested reverse transcriptase-polymerase chain reaction for eee virus. each species was infected at vario ... | 2003 | 12875303 |
| identification of reptilian and amphibian blood meals from mosquitoes in an eastern equine encephalomyelitis virus focus in central alabama. | uranotaenia sapphirina, culex erraticus, and cx. peccator were collected in an enzootic eastern equine encephalomyelitis (eee) virus focus in central alabama (tuskegee national forest) from 2001 to 2003 and analyzed for virus as well as host selection. eee virus was detected in each species every year except 2003, when pools of cx. peccator were negative. most (97%) of the 130 cx. peccator blood meals identified were from ectothermic hosts; 3% were from birds. among blood meals from reptiles (ap ... | 2004 | 15381805 |
| morphological and molecular characterization of a cypovirus (reoviridae) from the mosquito uranotaenia sapphirina (diptera: culicidae). | a novel cypovirus has been isolated from the mosquito uranotaenia sapphirina (uscpv) and shown to cause a chronic infection confined to the cytoplasm of epithelial cells of the gastric ceca and posterior stomach. the production of large numbers of virions and inclusion bodies and their arrangement into paracrystalline arrays gives the gut of infected insects a distinctive blue iridescence. the virions, which were examined by electron microscopy, are icosahedral (55 to 65 nm in diameter) with a c ... | 2005 | 16014906 |
| diapause-specific gene expression in the northern house mosquito, culex pipiens l., identified by suppressive subtractive hybridization. | in this study we probe the molecular events underpinning diapause observed in overwintering females of culex pipiens. using suppressive subtractive hybridization (ssh) we have identified 40 genes that are either upregulated or downregulated during this seasonal period of dormancy. northern blot hybridizations have confirmed the expression of 32 of our ssh clones, including six genes that are upregulated specifically in early diapause, 17 that are upregulated in late diapause, and two upregulated ... | 2007 | 17098250 |
| factors affecting mosquito production from stormwater drains and catch basins in two florida cities. | mosquito production from drains and catch basins in the cities of vero beach and key west, fl were monitored from may 2004 through august 2005. a total of 48,787 mosquitoes were captured during the study. of these, over 99% belonged to two species, culex nigripalpus theobald (2,630) and culex quinquefasciatus say (45,946). other species collected included culex restuans theobald, culex salinarius coquillett, aedes aegypti (l.), aedes albopictus (skuse), and uranotaenia lowii theobald. significan ... | 2006 | 17249351 |
| [presence of haemagogus equinus theobald, 1903 (diptera: culicidae), in soledad and malambo, in the province of atlántico, colombia]. | yellow fever is a serious illness public health importance and is transmitted by mosquitoes of the genera haemagogus and sabethes in the rural and forest environments, and by aedes aegypti in the urban setting. in colombia, haemagogus janthinomys and h. equinus are considered efficient vectors of this viral disease. | 2008 | 18645665 |
| detection of flaviviruses and orthobunyaviruses in mosquitoes in the yucatan peninsula of mexico in 2008. | a total of 191,244 mosquitoes from 24 species were collected in the yucatan peninsula of mexico from january to december 2008, and tested for the presence of cytopathic virus by virus isolation in vero cells. eighteen virus isolates were obtained, all of which were orthobunyaviruses. these were identified by reverse transcription-polymerase chain reaction (rt-pcr) and nucleotide sequencing as cache valley virus (n=17) and south river virus (n=1). a subset (n=20,124) of culex quinquefasciatus col ... | 2010 | 20370430 |
| detection of west nile virus rna in mosquitoes and identification of mosquito blood meals collected at alligator farms in louisiana. | since 2001, alligator farms in the united states have sustained substantial economic losses because of west nile virus (wnv) outbreaks in american alligators (alligator mississippiensis). once an initial infection is introduced into captive alligators, wnv can spread among animals by contaminative transmission. some outbreaks have been linked to feeding on infected meat or the introduction of infected hatchlings, but the initial source of wnv infection has been uncertain in other outbreaks. we c ... | 2010 | 20695278 |
| field investigations of winter transmission of eastern equine encephalitis virus in florida. | studies investigating winter transmission of eastern equine encephalitis virus (eeev) were conducted in hillsborough county, florida. the virus was detected in culiseta melanura and anopheles quadrimaculatus in february 2012 and 2013, respectively. during the winter months, herons were the most important avian hosts for all mosquito species encountered. in collections carried out in the summer of 2011, blood meals taken from herons were still common, but less frequently encountered than in winte ... | 2014 | 25070997 |
| urban mosquito fauna in mérida city, méxico: immatures collected from containers and storm-water drains/catch basins. | we examined the species composition and temporal occurrence of immature mosquitoes in containers and storm-water drains/catch basins from november 2011 to june 2013 in mérida city, méxico. a wide range of urban settings were examined, including residential premises, vacant lots, parking lots, and streets or sidewalks with storm-water drains/catch basins. in total, 111,776 specimens of 15 species were recorded. the most commonly collected species were aedes (stegomyia) aegypti (l.) (n = 60,961) a ... | 0 | 25429168 |
| culicidae (diptera) selection of humans, chickens and rabbits in three different environments in the province of chaco, argentina. | studies were conducted to determine the selection of humans, chickens and rabbits by culicidae in three different environments in the province of chaco, argentina. mosquitoes were collected fortnightly using cylindrical metal traps containing animal bait (chickens and rabbits). the mosquitoes were collected between june 2001-may 2002. during the same period and with the same frequency, mosquitoes biting the human operators of the traps were collected during the first 15 min of exposure within di ... | 0 | 23903970 |
| ilheus virus isolation in the pantanal, west-central brazil. | the wetlands of the brazilian pantanal host large concentrations of diverse wildlife species and hematophagous arthropods, conditions that favor the circulation of zoonotic arboviruses. a recent study from the nhecolândia sub-region of pantanal reported serological evidence of various flaviviruses, including west nile virus and ilheus virus (ilhv). according to the age of seropositive horses, at least three flaviviruses, including ilhv, circulated in the brazilian pantanal between 2005 and 2009. ... | 2013 | 23875051 |
| ecology of potential west nile virus vectors in southeastern louisiana: enzootic transmission in the relative absence of culex quinquefasciatus. | a study of west nile virus (wnv) ecology was conducted in st. tammany parish, louisiana, from 2002 to 2004. mosquitoes were collected weekly throughout the year using centers for disease control and prevention (cdc) light traps placed at 1.5 and 6 m above the ground and gravid traps. a total of 379,466 mosquitoes was collected. wnv was identified in 32 pools of mosquitoes comprising four species; 23 positive pools were from culex nigripalpus collected during 2003. significantly more positive poo ... | 2013 | 23478575 |
| new records of mosquitoes (diptera: culicidae) from bolívar state in south eastern venezuela, with 27 new species for the state and 5 of them new in the country. | this is the first part of a series of studies related to mosquito ecological and biogeographic aspects. a total of 69 mosquito species (diptera: culicidae) was collected in 16 localities sampled in the gran sabana municipality, canaima national park, and venezuela. twenty-seven mosquito species are recorded for the first time from bolívar state, venezuela. five of them species are reported for the first time in venezuela: anopheles malefactor dyar and knab (1907); chagasia bonneae root (1927); c ... | 2015 | 25853113 |
| north american wetlands and mosquito control. | wetlands are valuable habitats that provide important social, economic, and ecological services such as flood control, water quality improvement, carbon sequestration, pollutant removal, and primary/secondary production export to terrestrial and aquatic food chains. there is disagreement about the need for mosquito control in wetlands and about the techniques utilized for mosquito abatement and their impacts upon wetlands ecosystems. mosquito control in wetlands is a complex issue influenced by ... | 2012 | 23222252 |
| comparison of automatic traps to capture mosquitoes (diptera: culicidae) in rural areas in the tropical atlantic rainforest. | in several countries, surveillance of insect vectors is accomplished with automatic traps. this study addressed the performance of mosquito magnet® independence (mmi) in comparison with those of cdc with co2 and lactic acid (cdc-a) and cdc light trap (cdc-lt). the collection sites were in a rural region located in a fragment of secondary tropical atlantic rainforest, southeastern brazil. limatus durhami and limatus flavisetosus were the dominant species in the mmi, whereas ochlerotatus scapulari ... | 0 | 24402154 |
| diversity of mosquitoes and the aquatic insects associated with their oviposition sites along the pacific coast of mexico. | the abundance, richness and diversity of mosquitoes and aquatic insects associated with their oviposition sites were surveyed along eight states of the pacific coast of mexico. diversity was estimated using the shannon index (h'), similarity measures and cluster analysis. | 2014 | 24450800 |
| reciprocal trophic interactions and transmission of blood parasites between mosquitoes and frogs. | the relationship between mosquitoes and their amphibian hosts is a unique, reciprocal trophic interaction. instead of a one-way, predator-prey relationship, there is a cyclical dance of avoidance and attraction. this has prompted spatial and temporal synchrony between organisms, reflected in emergence time of mosquitoes in the spring and choice of habitat for oviposition. frog-feeding mosquitoes also possess different sensory apparatuses than do their mammal-feeding counterparts. the reciprocal ... | 2012 | 26466534 |
| an improved trap to capture adult container-inhabiting mosquitoes. | although dengue viruses are thought to be transmitted by aedes aegypti in puerto rico, aedes mediovittatus, the caribbean tree hole mosquito, is also a potential vector. this species is native to the greater antilles and has been shown to be a competent vector of dengue viruses in the laboratory. consequently, it has been suggested that ae. mediovittatus could be acting as a secondary vector or virus reservoir. this study was part of an ongoing investigation into this, and it aimed to determine ... | 0 | 24551969 |
| ape malaria transmission and potential for ape-to-human transfers in africa. | recent studies have highlighted the large diversity of malaria parasites infecting african great apes (subgenus laverania) and their strong host specificity. although the existence of genetic incompatibilities preventing the cross-species transfer may explain host specificity, the existence of vectors with a high preference for a determined host represents another possibility. to test this hypothesis, we undertook a 15-mo-long longitudinal entomological survey in two forest regions of gabon, whe ... | 2016 | 27071123 |
| mosquito-host interactions during and after an outbreak of equine viral encephalitis in eastern panama. | mosquito blood meals provide information about the feeding habits and host preference of potential arthropod-borne disease vectors. although mosquito-borne diseases are ubiquitous in the neotropics, few studies in this region have assessed patterns of mosquito-host interactions, especially during actual disease outbreaks. based on collections made during and after an outbreak of equine viral encephalitis, we identified the source of 338 blood meals from 10 species of mosquitoes from aruza abajo, ... | 2013 | 24339965 |
| efficacy and non-target impact of spinosad, bti and temephos larvicides for control of anopheles spp. in an endemic malaria region of southern mexico. | the larvicidal efficacy of the naturally derived insecticide spinosad, for control of immature stages of anopheles albimanus and associated culicids, was compared to that of synthetic and biological larvicides. effects on non-target insects were also determined. | 2014 | 24479683 |
| acoustic communication in insect disease vectors. | acoustic signalling has been extensively studied in insect species, which has led to a better understanding of sexual communication, sexual selection and modes of speciation. the significance of acoustic signals for a blood-sucking insect was first reported in the xix century by christopher johnston, studying the hearing organs of mosquitoes, but has received relatively little attention in other disease vectors until recently. acoustic signals are often associated with mating behaviour and sexua ... | 0 | 24473800 |
| sexual differences in prevalence of a new species of trypanosome infecting túngara frogs. | trypanosomes are a diverse group of protozoan parasites of vertebrates transmitted by a variety of hematophagous invertebrate vectors. anuran trypanosomes and their vectors have received relatively little attention even though these parasites have been reported from frog and toad species worldwide. blood samples collected from túngara frogs (engystomops pustulosus), a neotropical anuran species heavily preyed upon by eavesdropping frog-biting midges (corethrella spp.), were examined for trypanos ... | 2016 | 26977404 |
| classification of immature mosquito species according to characteristics of the larval habitat in the subtropical province of chaco, argentina. | to classify mosquito species based on common features of their habitats, samples were obtained fortnightly between june 2001-october 2003 in the subtropical province of chaco, argentina. data on the type of larval habitat, nature of the habitat (artificial or natural), size, depth, location related to sunlight, distance to the neighbouring houses, type of substrate, organic material, vegetation and algae type and their presence were collected. data on the permanence, temperature, ph, turbidity, ... | 2011 | 21739026 |
| resting environments of some costa rican mosquitoes. | the resting sites of tropical american mosquitoes are poorly documented, and the few reports that do exist are largely from opportunistic collections. since blood-engorged females (used in determining host associations) are more efficiently collected from resting sites than attractive traps, information on resting site utilization has practical value. to investigate differences in the resting sites utilized by tropical mosquitoes, we collected and identified female mosquitoes from one man-made ( ... | 2013 | 23701603 |
| separation of fourth-stage larvae and pupae of uranotaenia lowii and ur. sapphirina in florida. | easy-to-use characters for separating living 4th-stage larvae and pupal exuviae are given for the 2 species of uranotaenia that occur in florida. | 2003 | 12674541 |