transovarial transmission of gamboa virus in a tropical mosquito, aedeomyia squamipennis.we report transovarial transmission of gamboa virus (bunyavirus) in aedeomyia squamipennis, a tropical mosquito which is active and bloodfeeding throughout the year. gamboa virus was isolated during each of the 28 months of the study from every mosquito stage, including eggs, demonstrating that vertical transmission is a maintenance mechanism of this virus. the overall minimum infection rate was 5.1/1,000 mosquitoes. identification of the 567 isolates by neutralization indicated that greater tha ...19892563641
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
brus laguna virus, a gamboa bunyavirus from aedeomyia squamipennis collected in honduras.a virus isolate from aedeomyia squamipennis collected in honduras in 1967 was identified as a member of the gamboa serogroup (family bunyaviridae, genus bunyavirus). this is the ninth gamboa serogroup virus and the eighth shown to be a distinct serotype.19882903690
mansonia dyari, mansonia flaveola and aedeomyia squamipennis in the dominican republic, three new country records.we report the first collection of 3 mosquito species representing 2 genera in the dominican republic. the collections of adults and larvae of mansonia dyari belkin, heinemann, and page and mansonia flaveola (coquillett) from santo domingo city represent 2 additional mosquito species to the mosquito fauna of the dominican republic. larvae were collected in the quitasueno and puerta de hierro lagoons (covered with the pistia stratiotes plants) in santo domingo. the associated species aedeomyia squ ...200415669390
filamentous fungi associated with mosquito larvae (diptera: culicidae) in municipalities of the brazilian amazon.several species of the family culicidae are important vectors of diseases in humans and other animals. immature stages are filter-feeders of organic particulate matter and microorganisms. studies on microbial diversity can contribute to the discovery of new substances that can be used in the pharmaceutical industry for food or for biological control. the aim of this study was to isolate and identify the fungi associated with culicidae larvae found in different habitats (natural and artificial), ...200919618051
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
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
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
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
phylogenetic analysis and temporal diversification of mosquitoes (diptera: culicidae) based on nuclear genes and morphology.phylogenetic analyses provide a framework for examining the evolution of morphological and molecular diversity, interpreting patterns in biogeography, and achieving a stable classification. the generic and suprageneric relationships within mosquitoes (diptera: culicidae) are poorly resolved, making these subjects difficult to address.200920028549
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, ...201324339965
manifold habitat effects on the prevalence and diversity of avian blood parasites.habitats are rapidly changing across the planet and the consequences will have major and long-lasting effects on wildlife and their parasites. birds harbor many types of blood parasites, but because of their relatively high prevalence and ease of diagnosis, it is the haemosporidians - plasmodium, haemoproteus, and leucocytozoon - that are the best studied in terms of ecology and evolution. for parasite transmission to occur, environmental conditions must be permissive, and given the many constra ...201526835250
new genome sequences of gamboa viruses (family bunyaviridae, genus orthobunyavirus) isolated in panama and argentina.we describe here the nearly complete open reading frame (orf) of five gamboa virus strains isolated in panama and argentina. the viruses with complete orf showed the regular genome organization observed in other orthobunyaviruses with exception to the presence of nss protein. all predicted proteins showed homology with viruses belonging to members of the family bunyaviridae.201425414487
seasonal pattern of avian plasmodium-infected mosquitoes and implications for parasite transmission in central panama.aedeomyia squamipennis and culex (melanoconion) ocossa, two ubiquitous neotropical mosquito species, are likely involved in the transmission of several bird pathogens in gamboa, central panama. however, knowledge on their eco-epidemiological profiles is still incomplete. our goal in this study was to investigate temporal trends of vector density and their relationship with avian plasmodia prevalence. this information is central to identifying the risk posed by each vector species to the avian co ...201323974324
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
description of the egg of aedeomyia squamipennis (diptera: culicidae).the egg of aedeomyia squamipennis (lynch arribalzaga) is described with the aid of scanning electron micrographs. this study allows separation of the eggs of ad. squamipennis from the eggs of other mosquitoes inhabiting similar aquatic vegetation.19958551515
[mechanisms for the maintenance of gamboa virus in the mosquito aedeomyia squamipennis]. 19872892230
viruses isolated from aedeomyia squamipennis mosquitoes collected in panama, ecuador, and argentina: establishment of the gamboa serogroup.twenty-four virus strains were isolated from aedeomyia squamipennis mosquitoes collected in ecuador. one additional strain each was isolated from this species from panama and argentina. all 26 isolates were shown to be related serologically to prototype gamboa virus, originally isolated from ad. squamipennis mosquitoes collected in panama. antigenic comparisons of eight strains, including prototype gamboa virus, indicated the existence of four distinct viruses. neutralization tests with sera fro ...19816111232
ecological aspects of potential arbovirus vectors (diptera: culicidae) in an urban landscape of southern amazon, has been under intense human pressure, especially in the so-called "arc of deforestation" in the eastern and southern regions. changes in biodiversity due to landscape disturbance in municipalities at the arc of deforestation are likely to impact mosquito species leading to the potential for emergence of arboviruses. our aim was to describe the composition and structure of culicids in sinop, a municipality located in the southern amazon at the state of mato grosso, as well as their presen ...201931751525
enzootic arbovirus surveillance in forest habitat and phylogenetic characterization of novel isolates of gamboa virus in panama.landscape changes occurring in panama, a country whose geographic location and climate have historically supported arbovirus transmission, prompted the hypothesis that arbovirus prevalence increases with degradation of tropical forest habitats. investigations at four variably degraded sites revealed a diverse array of potential mosquito vectors, several of which are known vectors of arbovirus pathogens. overall, 675 pools consisting of 25,787 mosquitoes and representing 29 species from nine gene ...201626834200
aedeomyia squamipennis (diptera: culicidae) in florida, usa, a new state and country record.aedeomyia squamipennis (lynch arribalzaga) is a tropical mosquito (diptera: culicidae) found throughout most of the american tropics, from eastern mexico through argentina, including several caribbean islands. larvae are typically associated with bodies of water with dense growths of aquatic vegetation, particularly pistia stratiotes l., water lettuce. adult females feed predominantly on the blood of birds and seek hosts in forest canopies. aedeomyia squamipennis is considered an important vecto ...201728399225
[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
do mosquitoes filter the access of plasmodium cytochrome b lineages to an avian host?many parasites show fidelity to a set of hosts in ecological time but not evolutionary time and the determinants of this pattern are poorly understood. malarial parasites use vertebrate hosts for the asexual stage of their life cycle but use dipteran hosts for the sexual stage. despite the potential evolutionary importance of dipteran hosts, little is known of their role in determining a parasite's access to vertebrate hosts. here, we use an avian malarial system in panama to explore whether mos ...200818422926
holoendemicity of malaria: an avian the llanos (flatlands) of venezuela a high malaria parasite rate was found in nesting birds, mainly in many species of ciconiiformes, in contrast to a very low one in adults. species of plasmodium in birds of this order have seldom been reported. the high densities and sporozoite rates of the local vector, aedeomyia squamipennis, and the increasing parasite rates with age, suggest a great intensity of transmission, leading to 100% infection by the time the young birds leave their nests. the s ...19807445047
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