[frequency in human environment and dispersion of culicidae mosquitoes in an area adjacent to a primitive atlantic plain forest].results of peridomiciliary and forest environment mosquito catches are presented. by using the method single host, mosquitoes were identified according to blood-meal and thus their dispersal was observed. evidence was obtained for movements of aedes scapularis, due apparently were appetential flights, as well as its permanence in peridomiciliar resting places. occurrence in domestic animal shelters was recorded for this species. peridomiciliar human bait catches showed regular occurrence of ae. ...19902093993
[food preferences and domiciliation of culicidae mosquitoes in the ribeira valley, são paulo, brazil, with special reference to aedes scapularis and culex (melanoconion)].new results on blood-meal identification and the environmental distribution of mosquitoes collected in four different ribeira valley (s. paulo state, brazil) environments, during the period february to november 1986, are presented. sources of 651 blood-meals were identified. the preference of ae. scapularis for large mammals, chiefly cattle, horse and even man, was confirmed. data suggests that a similar behavioral pattern is presented by cx. ribeirensis. both mosquitoes seem to be strongly attr ...19892573142
[adult culicidae mosquitoes in the irrigated culture of rice in the vale do ribeira, state of são paulo, brazil].a collection of adult culicidae was carried out during the period from may 1984 to september 1985, in a rice field in the polder of the experimental station of pariquera-açú, in the ribeira valley (s. paulo state, brazil). cdc miniature traps, supplemented with dry ice, were used. a total of 2,686 mosquitoes were collected. the most frequent were the coquillettidia and mansonia genera (nearly 55% of the specimens caught). aedes scapularis, as an isolated species, contributed with near by 11% of ...19892576570
[entomologic situation regarding arbovirus circulation in the guajaibon area].the collections of culicidae made in the guajaibón area, north coast of havana province, are analyzed with arbovirologic purposes. the predominance of aedes scapularis in the human bait collections is confirmed. the possibility of arbovirus circulation in the area is suggested.19892577010
arbovirus investigations in argentina, 1977-1980. ii. arthropod collections and virus isolations from argentine mosquitoes.prospective surveys for arboviruses were carried out in santa fe, corrientes, and chaco provinces, argentina, aperiodically during 1977-1980. a total of 313,233 mosquitoes and 598 biting flies other than mosquitoes were collected and tested for virus in 5,197 and 45 pools, respectively. forty virus strains were isolated, all from mosquitoes, as follows: santa fe province: 4 gamboa group viruses from aedeomyia squamipennis, 1 strain each of st. louis encephalitis virus from culex pipiens quinquef ...19852863989
biting activity of aedes scapularis (rondani) and haemagogus mosquitoes in southern brazil (diptera: culicidae). 19882905827
experimental transmission of rocio encephalitis virus by aedes scapularis (diptera: culicidae) from the epidemic zone in brazil. 19846694175
studies on mosquitoes (diptera: culicidae) and anthropic environment. 6--breeding in empty conditions of rice fields in south-eastern brazil.studies on culicid breeding in empty rice fields were carried out during the cultivation cycle from may to november 1993. this period corresponded to stages 1 and 2, when empty conditions prevailed. breeding occurred in stage 1 and the first part of stage 2, corresponding respectively to fallow uncultivated and ploughing situations. no breeding was found to take place during the second part of stage 2 when transient floods and harrowing occurred. the predominant species were aedes scapularis, cu ...19947660043
[mosquitos of peri and extradomiciliary environments in the southern region of brazil].mosquitoes were collected on sonho real farm, querência do norte county, paraná state, brazil, using human bait and falcão traps between june 1989 and may 1990. the fauna composition, monthly density, hours of major density, human attraction and presence of mosquitoes in domestic animal shelters were investigated. 5,923 mosquitoes of the genera aedes, aedomyia, anopheles, coquillettidea, culex, mansonia, psorophora, sabethes and uranotaenia were collected. 33 species of mosquitoes were identifie ...19947824842
studies on mosquitoes (diptera: culicidae) and anthropic environment. 2. immature stages research at a rice irrigation system location in south-eastern brazil.a relation between a rice irrigation system and mosquito breeding was established in a study undertaken at the ribeira valley experimental station, from january through december 1992. flooding favoured anopheles (nyssorhynchus) and culex (melanoconion) species, while empty paddies condition were propitious to aedes scapularis and culex (culex) species. compared with a more primitive area of the same region, several species showed high a degree of adaptation to the anthropic environment. among th ...19937911592
studies on mosquitoes (diptera: culicidae) and anthropic environment. 3--survey of adult stages at the rice irrigation system and the emergence of anopheles albitarsis in south-eastern, brazil.a study of adult culicidae ecology was carried out from january 1992 through january 1993 at the rice irrigation system of the ribeira valley experimental station. the adaptation of anopheles albitarsis to the anthropic environment became evident through the adult collections made at its various habitats represented by the irrigation system and the edge of the residual pond, as well as at those made within the local patchy residual woods. other potential disease vectors were prevalent in the irr ...19937911593
[culicidae of itaipu lake, in the paraná river, southern brazil].mosquito catches were made in guaíra county, paraná state, southern brazil, in the vicinity of itaipu dam, from january to december 1991. the catches were made with a shannon light trap and human bait. the shannon light trap was installed beside the highway that used, formerly, to lead to the sete quedas cataracts and the human bait was used in the urban area. data about the culicidae fauna were obtained as to predominant species, seasonal variation, time of highest density and affinity with hum ...19958525315
[breeding places of aedes scapularis (diptera: culicidae) in artificial containers].breeding places of aedes scapularis were found in the ilha comprida and pariquera-açu counties of s. paulo state, brazil. they included several types of artificial water container. as 270 (250 larvae and 20 pupae) immature forms were collected, the hypothesis is raised that behavioral change is occurring as a secondary adaptation, as a consequence of the anthropic environment. this tends toward a reduction in ground breeding places and, at the same time, to an increase in the number of artificia ...19979629732
mosquito frequency and feeding habits in an enzootic canine dirofilariasis area in niterói, state of rio de janeiro, brazil.heartworm, a chronic fatal mosquito-borne canine disease, is frequently diagnosed in dogs from the state of rio de janeiro, where its prevalence is 29.7% in the city of niterói. nevertheless it is rarely detected in cats (0.8%) from the same state. dogs are the primary source of infection to mosquitoes. because cats either do not demonstrate microfilaremia or it is too low and transient for transmission. a mosquito survey was conducted in itacoatiara, niterói, from march 1995 to february 1996, u ...19989698883
susceptibility of aedes scapularis (rondani, 1848) to dirofilaria immitis (leidy, 1856), an emerging zoonosis. 19989711331
[ecological parameters of arbovirus circulation on the north coast of havana. i. collection of culicids in the guajaibon region].we show the culicids collected in the guajaibón zone, in havana province, in order to characterize the present population according to ecological parameters and the possible risk for man. we show that aedes scapularis is numerically and ecologically dominant over the rest of the species that attack men, as well as the possible indirect influence of culicid populations in crab caves upon human beings.19919768189
ecology of mosquitoes (diptera: culicidae) in areas of serra do mar state park, state of são paulo, brazil. ii - habitat distribution.the mosquito (diptera: culicidae) ecology was studied in areas of serra do mar state park, state of são paulo, brazil. systematized biweekly human bait collections were made three times a day, for periods of 2 or 3 h each, in sylvatic and rural areas for 24 consecutive months (january 1991 to december 1992). a total of 24, 943 adult mosquitoes belonging to 57 species were collected during 622 collective periods. aedes scapularis, coquillettidia chrysonotum, cq. venezuelensis, wyeomyia dyari, wy. ...200010656699
epidemic of jungle yellow fever in brazil, 2000: implications of climatic alterations in disease spread.seventy-seven human cases of sylvatic yellow fever were reported in brazil during the period january-june 2000. the first cases were reported 1 week after new year's day and originated at chapada dos veadeiros, a tourist canyon site in goiás state, near brasília, the brazilian capital. the laboratory procedures used for diagnoses included serology with an igm capture assay and plaque reduction neutralization test, virus isolation in suckling mice and c6/36 cells, and immunohistochemistry. all ca ...200111596099
[main breeding-containers for aedes aegypti and associated culicids, argentina].breeding containers for aedes (stegomyia) aegypti were identified in two cities of chaco province (northeast argentina): presidencia roque saenz peña and machagai. all water-retaining recipients found in house backyards capable to retain water were classified according to their type and size, counted and checked. aedes aegypti and culex quinquefasciatus were the most frequently collected species, being also found cx. maxi, cx. saltanensis and ochlerotatus scapularis. tires and car batteries repr ...200212471389
[culicidae mosquito abundance in a preserved metropolitan area and its epidemiological implications].to study the adult culicidae fauna in a preserved area in urban outskirts for describing species of public health concern.200312792675
host-feeding patterns of potential human disease vectors in the paraíba valley region, state of säo paulo, brazil.engorged females of aedes albopictus, ochlerotatus scapularis, culex nigripalpus and culex quinquefasciatus were collected by aspiration and sweep net during two years in tremembé county, state of säo paulo, brazil. of the 1,092 specimens analyzed with the precipitin test, 87.6% reacted to one or more of the eight antisera tested. of the four species for which the host determination was made, the reaction in 98.5% was to a single host. the application of the feeding index for four species of mos ...200312831131
cache valley virus, isolated from a trinidadian mosquito, aedes scapularis. 196113724163
[mosquitoes with morning biting activity in the atlantic forest, brazil (diptera, culicidae)].previous studies on culicidae in the state of santa catarina, brazil, were limited to anophelinae and culex quinquefasciatus due to the past occurrence of malaria and filariasis but the mosquito fauna in forested areas is still almost unknown. it was carried out a survey of mosquitoes with morning biting activity in a tourist trekking trail of an atlantic forest reserve area in the island of santa catarina. there were collected 358 specimens of 22 species, 14 of them reported for the first time ...200414963553
studies on entomological monitoring: mosquito species frequency in riverine habitats of the igarapava dam, southern region, brazil.diversity of mosquito species was evaluated in different habitats before and after the igarapava reservoir flooding in the grande river, southern cerrado of brazil. we aimed at verifying changes in these mosquito populations in consequence of the lake formation. four habitats were selected as sampling stations: peridomiciliary habitat, pasture, "veredas" and gallery forest patch. bimonthly collections were made with the shannon trap and human bait, including diurnal, crepuscular and nocturnal pe ...200415361975
epidemiology of heartworm: what is happening in south america and mexico?canine heartworm has been known to exist in the americas for more than 150 years (1847), and the first south american report was published approximately 30 years later (1875). the first human case was reported in 1887 and the first feline case in 1921. coincidently, these two reports were from brazil, where most surveys of the disease during the past two decades have been conducted in dogs. feline cases are seldom found in the south american literature, although feline heartworm disease has been ...200516198820
characterization of minaçu virus (reoviridae: orbivirus) and pathological changes in experimentally infected newborn mice.minaçu virus was isolated from ochlerotatus scapularis (diptera: culicidae) in minaçu, goiás state, brazil, in 1996. in attempting characterization of virus serological (hemagluttination inhibition, hi; indirect immunofluorescence assay, ifa), physicochemical [test for deoxycholate acid (dca) sensitivity; polyacrylamide gel electrophoresis (page)] tests and ultrastructural studies were made. virus was also assayed in suckling mice after intracerebral inoculation of 0.02 ml and in vero and c6/36 ...200717244340
canine vector-borne diseases in brazil.abstract: canine vector-borne diseases (cvbds) are highly prevalent in brazil and represent a challenge to veterinarians and public health workers, since some diseases are of great zoonotic potential. dogs are affected by many protozoa (e.g., babesia vogeli, leishmania infantum, and trypanosoma cruzi), bacteria (e.g., anaplasma platys and ehrlichia canis), and helminths (e.g., dirofilaria immitis and dipylidium caninum) that are transmitted by a diverse range of arthropod vectors, including tick ...200818691408
genetic characterization of orthobunyavirus melao, strains be ar633512 and be ar8033, and experimental infection in golden hamsters (mesocricetus auratus).melao virus (melv) strains be ar8033 and be ar633512 were isolated from pools of ochlerotatus scapularis mosquitoes in belém, pará state (1955), and alta floresta, rondônia state (2000), brazil, respectively. the aim of the present study was to molecularly characterize these strains and to describe the histopathological, biochemical and immunological changes in golden hamsters (mesocricetus auratus) following intraperitoneal injection of melv strains. hamsters were susceptible to both of the mel ...200919088293
studies on yellow fever in south america : v. transmission experiments with certain species of culex and aedes.1. yellow fever virus has been transmitted from monkey to monkey both by the bites of aëdes (ochlerotatus) scapularis which had fed upon monkeys infected with yellow fever and by the injection of the ground up bodies of such mosquitoes. 2. a fatal infection has been obtained by the injection of the ground up bodies of aëdes (ochlerotatus) serratus, which had previously fed on an infected monkey, and a mild infection has been secured by the similar injection of aëdes (taeniorhynchus) taeniorhynch ...192919869666
seasonal variation of potential flavivirus vectors in an urban biological reserve in northeastern brazil.although yellow fever (yf) has not been reported on the eastern coast of brazil since 1942, there was a reemergence of dengue fever in brazil in 1987 due to the reintroduction of aedes aegypti (l.). to assess areas of potential risk for transmission of vector-borne diseases, a surveillance system was placed in a large atlantic forest reserve in natal, rio grande do norte, brazil, where in 2004 unexplained epizootics were reported among marmosets. the etiologic agent causing the mortality in marm ...200919960696
blood feeding patterns of mosquitoes: random or structured?abstract:201020205866
blood meal identification of selected mosquitoes in rio de janeiro, brazil.abstract. the blood meal sources of 5 species (mansonia titillans, aedes scapularis, culex quinquefasciatus, coquillettidia shannoni, and anopheles peryassui) collected in conceição do macacu, in the southeastern brazilian state of rio de janeiro, were examined with the precipitin test. of the 1,128 mosquitoes collected, 907 (80.4%) reacted to some antisera. although all 5 species were eclectic in their feeding habits, ma. titillans and ae. scapularis fed mostly on birds, while cx. quinquefascia ...201020402346
incrimination of the mosquito, aedes taeniorhynchus, as the primary vector of heartworm, dirofilaria immitis, in coastal yucatan, mexico.mosquito collections were carried out on microfilaraemic dogs, positive for dirofilaria sp., for 18 consecutive nights in the coastal town of celestún, yucatan, southeast mexico, during the rainy season (august) of 2007. a total of 292 female mosquitoes representing 12 species of dipteran culicidae were collected: anopheles albimanus (wiedemann); anopheles crucians (wiedemann); anopheles pseudopunctipennis (theobald); culex coronator (dyar & knab); culex interrogator (dyar & knab); culex nigripa ...201020572932
yellow fever virus in haemagogus leucocelaenus and aedes serratus mosquitoes, southern brazil, 2008.yellow fever virus (yfv) was isolated from haemagogus leucocelaenus mosquitoes during an epizootic in 2001 in the rio grande do sul state in southern brazil. in october 2008, a yellow fever outbreak was reported there, with nonhuman primate deaths and human cases. this latter outbreak led to intensification of surveillance measures for early detection of yfv and support for vaccination programs. we report entomologic surveillance in 2 municipalities that recorded nonhuman primate deaths. mosquit ...201021122222
an experimental model of meningoencephalomyelitis by rocio flavivirus in balb/c mice: inflammatory response, cytokine production, and histopathology.abstract. rocio virus (rocv) is a flavivirus, probably transmitted by culex mosquitoes and maintained in nature as a zoonosis of wild birds. rocio virus caused a human epidemic of severe encephalitis that lasted from 1973 to 1980 in the ribeira valley, in the southeastern coast of brazil. after this outbreak, serologic evidence of rocv circulation has been reported and public health authorities are concerned about a return of rocv outbreaks in brazil. we show here a study on the pathogenesis and ...201121813860
[The presence of Culicidae species in medium-sized cities in the State of São Paulo, Brazil and the risk of West Nile fever and other arbovirus infection].The objectives for this study were to measure the diversity of Culicidae species, describe their abundance and seasonal variation in São José do Rio Preto, SP, and discuss the risk of arbovirus infections.201121860898
molecular detection of flaviviruses and alphaviruses in mosquitoes (diptera: culicidae) from coastal ecosystems in the colombian caribbean.arboviruses belonging to the genera flavivirus and alphavirus were detected in mosquitoes in a rural area of san bernardo del viento (córdoba, colombia). a total of 22,180 mosquitoes were collected, sorted into 2,102 pools, and tested by generic/nested reverse transcription-polymerase chain reaction. venezuelan equine encephalitis virus, dengue virus, west nile virus, st. louis encephalitis virus, yellow fever virus, and culex flavivirus were detected and identified by sequencing. the detection ...201627706377
inventory of mosquitoes (diptera: culicidae) in conservation units in brazilian tropical dry brazil, most studies of the culicidae family are concentrated in rainforest regions. as such, there is a lack of knowledge regarding the diversity of culicidae in regions with different climatic and vegetational characteristics. the aim of this study was to compile an inventory of culicidae in protected areas of the semi-arid region of the state of minas gerais, brazil, in order to better understand the diversity of the family within this region. the study was conducted across four protected ...026200963
searching for putative avian malaria vectors in a seasonally dry tropical forest in brazil.haemosporidian parasites of the genera plasmodium and haemoproteus can have detrimental effects on individual birds and populations. despite recent investigations into the distribution and richness of these parasites and their vertebrate hosts, little is known about their dipteran vectors. the neotropics has the highest diversity of mosquitoes in the world, but few studies have tried to identify vectors in this area, hampering the understanding of the ecology of avian malaria in the highly diver ...201627852326
effectiveness of mosquito magnet® trap in rural areas in the southeastern tropical atlantic forest.traps are widely employed for sampling and monitoring mosquito populations for surveillance, ecological and fauna studies. considering the importance of assessing other technologies for sampling mosquitoes, we addressed the effectiveness of mosquito magnet® independence (mmi) in comparison with those of the cdc trap with co2 and lurex3® (cdc-a) and the cdc light trap (cdc-lt). field collections were performed in a rural area within the atlantic forest biome, southeastern state of são paulo, braz ...201425424445
serological evidence of widespread circulation of west nile virus and other flaviviruses in equines of the pantanal, brazil.a recent study reported neutralizing antibodies to west nile virus (wnv) in horses from four ranches of southern pantanal. to extend that study, a serosurvey for wnv and 11 brazilian flaviviruses was conducted with 760 equines, 238 sheep and 61 caimans from 17 local cattle ranches. among the tested equines, 32 were collected from a ranch where a neurologic disorder outbreak had been recently reported. the sera were initially screened by using a blocking elisa and then titrated by 90% plaque-redu ...201424551266
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 ...023903970
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. ...201323875051
molecular identification of saint louis encephalitis virus genotype iv in colombia.saint louis encephalitis virus (slev) is a member of the japanese-encephalitis virus serocomplex of the genus flavivirus. slev is broadly distributed in the americas and the caribbean islands, where it is usually transmitted by mosquitoes of the genus culex and primarily to birds and mammalian-hosts. humans are occasionally infected by the virus and are dead-end hosts. slev causes encephalitis in temperate regions, while in tropical regions of the americas, several human cases and a wide biologi ...201526313538
diversity of mosquito vectors (diptera: culicidae) in caxiuanã, pará, brazil.this paper presents a study based on ecological parameters represented by diversity and richness indices applied in a community of mosquitoes (diptera: culicidae), at the national forest of caxiuanã, melgaço municipality, state of pará, in the brazilian amazon. a total of 25,433 specimens of culicids were collected in the study, from five field collection periods, over 10 months, between 2005 and 2006. specimens were collected in four heights of the forest (ground level, 8 m, 16 m, and 30 m-cano ...201222997514
population genetic structure of aedes fluviatilis (diptera: culicidae).although aedes fluviatilis is an anthropophilic mosquito found abundantly in urban environments, its biology, epidemiological potential and genetic characteristics are poorly understood. climate change and urbanization processes that result in environmental modifications benefit certain anthropophilic mosquito species such as ae. fluviatilis, greatly increasing their abundance in urban areas. to gain a better understanding of whether urbanization processes modulate the genetic structure of this ...201627598889
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 ...201525853113
comparison of automatic traps to capture mosquitoes (diptera: culicidae) in rural areas in the tropical atlantic 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 ...024402154
biodiversity and temporal distribution of immature culicidae in the atlantic forest, rio de janeiro state, increase the knowledge of biodiversity and identify larval habitats used by immature mosquitoes in the atlantic forest, we conducted a study in areas with various stages of preservation within the guapiaçu ecological reserve in cachoeiras de macacu, rio de janeiro state. the culicidae fauna were sampled during february, april, june, august, october, and december 2012; february, march, april, may, june, august, october, and december 2013; and january and march 2014. immature mosquitoes were co ...201627404496
high morphological and genetic variabilities of ochlerotatus scapularis, a potential vector of filarias and arboviruses.ochlerotatus scapularis is a potential vector of filarias and arboviruses in the neotropics. this species was once typically associated with sylvatic environments; however, cases of synanthropy and urbanization of this species have been increasingly reported in southeast brazil. despite the medical relevance of oc. scapularis, its populational variability is not yet known. to our knowledge, this is the first report describing the morphological and genetic variabilities of this species.201525885902
generation of recombinant oropouche viruses lacking the nonstructural protein nsm or nss.oropouche virus (orov) is a midge-borne human pathogen with a geographic distribution in south america. orov was first isolated in 1955, and since then, it has been known to cause recurring outbreaks of a dengue-like illness in the amazonian regions of brazil. orov, however, remains one of the most poorly understood emerging viral zoonoses. here we describe the successful recovery of infectious orov entirely from cdna copies of its genome and generation of orov mutant viruses lacking either the ...201526699638
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.201424450800
human and animal dirofilariasis: the emergence of a zoonotic mosaic.dirofilariasis represents a zoonotic mosaic, which includes two main filarial species (dirofilaria immitis and d. repens) that have adapted to canine, feline, and human hosts with distinct biological and clinical implications. at the same time, both d. immitis and d. repens are themselves hosts to symbiotic bacteria of the genus wolbachia, the study of which has resulted in a profound shift in the understanding of filarial biology, the mechanisms of the pathologies that they produce in their hos ...022763636
vector-borne helminths of dogs and humans in europe.presently, 45% of the total human population of europe, as well as their domestic and companion animals, are exposed to the risk of vector-borne helminths (vbh) causing diseases. a plethora of intrinsic biological and extrinsic factors affect the relationship among helminths, vectors and animal hosts, in a constantly changing environment. although canine dirofilarioses by dirofilaria immitis and dirofilaria repens are key examples of the success of vbh spreading into non-endemic areas, another e ...201323324440
coexistence mechanisms at multiple scales in mosquito assemblages.species coexistence in mosquito assemblages may depend on mechanisms related to interspecific resource partitioning occurring at multiple scales. in the present work we investigated co-occurrence or spatial segregation in mosquito assemblages sharing resources at micro-habitat, habitat and landscape scales. environmental characteristics, mosquito fauna as adults and larvae were assessed along vegetation gradient in a natural landscape of tropical rainforest. huisman-olff-fresco (hof) and general ...201425384802
feeding habits of mosquitoes (diptera: culicidae) in an area of sylvatic transmission of yellow fever in the state of são paulo, brazil.the reintroduction of sylvatic yellow fever in the state of são paulo after about six decades was confirmed in the northwestern region in 2000, where in 2008 there also occurred an important epizootic. the purpose of this study was to investigate the feeding habits of culicids potentially involved in the sylvatic transmission of the virus in this region.201525810711
dogs, cats, parasites, and humans in brazil: opening the black box.dogs and cats in brazil serve as primary hosts for a considerable number of parasites, which may affect their health and wellbeing. these may include endoparasites (e.g., protozoa, cestodes, trematodes, and nematodes) and ectoparasites (i.e., fleas, lice, mites, and ticks). while some dog and cat parasites are highly host-specific (e.g., aelurostrongylus abstrusus and felicola subrostratus for cats, and angiostrongylus vasorum and trichodectes canis for dogs), others may easily switch to other h ...201424423244
culicidae community composition and temporal dynamics in guapiaçu ecological reserve, cachoeiras de macacu, rio de janeiro, brazil.a temporal observational study was conducted of the culicidae fauna in a remnant area of atlantic forest within a private reserve (guapiaçu ecological reserve-regua) presenting typical vegetation cover of dense rain forest, with some patches recovering a floristic composition similar to that of the original community. research was carried out to analyze the influence of climatic factors (mean monthly temperature, rainfall, and air relative humidity) on the temporal dynamics of the mosquito commu ...201525815724
wing sexual dimorphism of pathogen-vector culicids.sexual dimorphism in animals has been studied from different perspectives for decades. in 1874 darwin hypothesized that it was related to sexual selection, and even after nearly 140 years, when additional empirical data has become available and the subject has been investigated from a contemporary viewpoint, this idea is still supported. although mosquito (culicidae) wings are of great importance as they play a sex-specific role, little is known about wing sexual dimorphism in these pathogen-vec ...201525890192
seasonal differences in density but similar competitive impact of aedes albopictus (skuse) on aedes aegypti (l.) in rio de janeiro, brazil.previous studies have shown that the negative effects of density of ae. albopictus on ae. aegypti exceed those of ae. aegypti on ae. albopictus for population growth, adult size, survivorship, and developmental rate. this competitive superiority has been invoked to explain the displacement of ae. aegypti by ae. albopictus in the southeastern usa. in brazil, these species coexist in many vegetated suburban and rural areas. we investigated a related, but less-well-studied question: do effects of a ...201627322537
effects of artificial flooding for hydroelectric development on the population of mansonia humeralis (diptera: culicidae) in the paraná river, são paulo, brazil.the closure of two phases of the dam at the porto primavera hydroelectric plant on the paraná river flooded a flawed system located in the municipality of presidente epitácio, são paulo state, favoring the proliferation of aquatic weeds. this study aimed to observe the population of mansonia humeralis in the area, monitoring the richness, diversity, and dominance of this species both before and during different phases of reservoir flooding as well as evaluate its possible consequences concerning ...201222529867
relative effectiveness of diethyl toluamide and m-2020 against aedes scapularis (rondani). 013784945
detection of orthobunyavirus in mosquitoes collected in argentina.bunyamwera virus (bunv) (bunyaviridae, genus orthobunyavirus, serogroup bunyamwera) is considered an emerging pathogen for humans and animals in american countries. the cbaar-426 strain of bunv was recovered from mosquitoes ochlerotatus albifasciatus (diptera: culicidae) collected in córdoba province (argentina), where serological studies detected high seroprevalences in humans and animals. molecular detection of orthobunyavirus was performed in mosquitoes collected in córdoba province. seventee ...201525991544
[mayaro: a re-emerging arbovirus in venezuela and latin america].mayaro virus produces nonspecific, sublethal disease symptoms, often confused with dengue, but with symptoms of arthalgias that can cause incapacitating disability. outbreaks have been localized and sporadic in the pan-amazonia forest since its first isolation in 1954 (trinidad and tobago). the literature available is scarce, diverse and dispersed. mayaro virus is an alphavirus, phylogenetically related to the semliki forest antigenic complex. una and mayaro viruses are the only viruses of this ...201223242303
spatial distribution of arboviral mosquito vectors (diptera, culicidae) in vale do ribeira in the south-eastern brazilian atlantic forest.mosquitoes are vectors of arboviruses that can cause encephalitis and hemorrhagic fevers in humans. aedes serratus (theobald), aedes scapularis (rondani) and psorophora ferox (von humboldt) are potential vectors of arboviruses and are abundant in vale do ribeira, located in the atlantic forest in the southeast of the state of são paulo, brazil. the objective of this study was to predict the spatial distribution of these mosquitoes and estimate the risk of human exposure to mosquito bites. result ...201222331150
classification of immature mosquito species according to characteristics of the larval habitat in the subtropical province of chaco, 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, ...201121739026
mosquito populations dynamics associated with climate variations.mosquitoes are responsible for the transmission of numerous serious pathogens. members of the aedes and culex genera, which include many important vectors of mosquito-borne diseases, are highly invasive and adapted to man-made environments. they are spread around the world involuntarily by humans and are highly adapted to urbanized environments, where they are exposed to climate-related abundance drivers. we investigated culicidae fauna in two urban parks in the city of são paulo to analyze the ...201727810426
ecological aspects of mosquitoes (diptera: culicidae) in the gallery forest of brasília national park, brazil, with an emphasis on potential vectors of yellow fever.we analyzed the vertical and monthly distributions of culicid species in the gallery forest of brasília national park, with an emphasis on the potential vectors of yellow fever (yf).201424142367
evaluation of mosquito (diptera: culicidae) species richness using two sampling methods in the hydroelectric reservoir of simplício, minas gerais, brazil.we compared two types of light traps used for monitoring mosquito abundance in the hydroelectric reservoir of simplício, além paraíba - minas gerais. mosquitoes were captured bimonthly using automatic cdc and shannon traps before the filling of the hydroelectric plant reservoir from december 2008 to december 2009. in total, 1474 specimens from 13 genera were captured. among the captured specimens, several species known to be vectors of disease-causing agents for humans and/or animals were identi ...201222468830
association of vectors and environmental conditions during the emergence of peruvian horse sickness orbivirus and yunnan orbivirus in northern peru.since 1983, cases of diseased donkeys and horses with symptoms similar to those produced by alphaviruses were identified in two departments in northern peru; however serological testing ruled out the presence of those viruses and attempts to isolate an agent were also unproductive. in 1997, also in northern peru, two new orbiviruses were discovered, each recognized as a causative agent of neurological diseases in livestock and domestic animals and, at the same time, mosquitoes were found to be i ...201526611971
[mosquitoes (diptera: culiciadae) as potential vectors of arboviruses in the urabá region, northwest of colombia].studies directed to investigate ecological parameters of sylvatic mosquitoes populations permit the establishment of risk levels in the transmission of arboviruses and provide the basis for recommendations to health authorities about prevention, surveillance and control.201223242299
[aquatic insects that are bioregulators of mosquito larvae present in pantanos de villa, lima, peru].the main aquatic insects bioregulators of mosquito larvae living in different reservoirs at the "pantanos de villa", lima, perú, were collected and determined. mosquito larvae and pupae of the culex quinquefasciatus say and aedes scapularis rondani species were found in water reservoirs where aquatic insects are not observed. in those where there were these effective bioregulators of mosquito larvae such as ischnura ramburii (selys), ceratura capreola (hagen), erithrodoplax cleopatra ris, aeschn ...19969805058
the impact of industrial anthropization on mosquito (diptera, culicidae) communities in mangrove areas of guanabara bay (rio de janeiro, brazil).the effects of industrial anthropization on species composition and community diversity of culicidae (diptera) were studied in a mangrove area impacted by industrial activities as compared to a preserved area, both around guanabara bay in the state of rio de janeiro, brazil. diversity, equitability, and species richness in culicidae community differed between the studied areas. indicator species analysis and correspondence analysis were carried out and indicated that the sabethini, especially wy ...201223950012
[parity of ochlerotatus scapularis in laboratory and field conditions].to identify the parity status of ochlerotatus scapularis females in laboratory and field conditions.200616810376
key-factor analysis of immature stages of aedes scapularis (diptera: culicidae) populations in southeastern brazil.development times and mortality factors were investigated for populations of aedes scapularis (rondani) occurring in natural temporary ground pools in southeastern brazil. analysis of life tables by the key-factor method showed that mortality caused by desiccation of breeding sites was the principal factor accounting for fluctuations in population sizes throughout the study period. for cohorts that completed development, mortality attributed to predation by aquatic insects ranged from 68 to 96% ...200212191434
diversity of mosquitoes at the itatiaia national park, state of rio de janeiro, brazil.a temporal observational study was conducted with the aim of characterizing culicidae richness, diversity, abundance, and species similarity in fragments of atlantic forest within the itatiaia national park, state of rio de janeiro, brazil. a total of 31 mosquito species were collected in 2 sampling stations, during the day and night, and the abundance index and dominance coefficient for each species were calculated. the results showed that the culicid density was higher during the day, and the ...201729369024
new records of mosquitoes carrying dermatobia hominis eggs in the state of são paulo, southeastern brazil.we found 4 species of mosquitoes bearing eggs of the human botfly, dermatobia hominis, in the reserva municipal de trabiju, pindamonhangaba, são paulo, brazil. the mosquitoes were simultaneously collected in landing-biting catches by 2 collectors. from a total of 6,902 specimens collected from january through april 2010, the 15 females carrying d. hominis eggs belonged to aedes scapularis, limatus durhamii, onirion personatum, and wyeomyia confusa. the first 3 species are new reports of phoresy ...201222894123
enzootic mosquito vector species at equine encephalitis transmission foci in the república de panamá.the identification of mosquito vector species present at arboviral enzootic transmission foci is important to understand transmission eco-epidemiology and to propose and implement prevention and control strategies that reduce vector-borne equine encephalitis transmission. the goal of this study was to identify mosquito species potentially involved in the transmission of enzootic equine encephalitis, in relation to their abundance and diversity at three endemic regions in the república de panamá. ...201728937995
polymorphism in male genitalia of aedes (ochlerotatus) scapularis rondani, 1848.morphology of male genitalia of culicids is generally species-specific and often used as a taxonomic marker. however, some characters of the male genitalia vary intraspecifically and are not taxonomically diagnostic. this might be the case of aedes scapularis, a neotropical culicid with vector competence for arboviruses and filarial worms. males of this species may or not present a retrorse process (rp) in the genitalic claspette filaments, which led authors to suspect that this variance might b ...201828416024
scanning electron microscopy of the eggs of aedes scapularis from southern south america.the eggs of aedes scapularis analyzed by scanning electron microscopy are black and elliptical in outline, measuring approximately 620.4 +/- 16.74 microm long and 163.7 +/- 16.90 microm (n = 10) wide, with an egg index (length/width ratio) of 3.79. the anterior extremity tapered abruptly from a width of 51.6 microm, while such tapering was more gradual at the posterior extremity, from a width of 61.4 microm. the ventral surface of the chorionic coating presented cells with a tubular aspect conta ...201020649130
[occurrence of aedes scapularis (diptera:culicidae) in artificial breeding area of southern brazil]. 19969008929
studies on mosquitoes (diptera: culicidae) and anthropic environment. 9-synanthropy and epidemiological vector role of aedes scapularis in south-eastern brazil.behaviour comparisons of aedes scapularis and ae. serratus are presented. results were obtained by sampling aedes adult mosquitoes at several places in the rural anthropic environment in the ribeira valley region of s. paulo state, brazil. aedes dominance was shared by those two species, but ae. scapularis showed a clear tendency to frequent the modified environment, while ae. serratus was to be found in the more preserved ones, here represented by the vestigial patchy forests. regarding the ope ...19958539531
[epidemiological study of bancroftian filariasis in a community of santa catarina, as a preliminary phase of a prophylactic test; verification of extra-domiciliary by a new vector, aëdes scapularis]. 195513290135
[aedes scapularis, new proved carrier of bancroft's filariasis in southern brazil; preliminary note]. 195413186266
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