A genus of mosquitoes (CULICIDAE) commonly found in tropical regions. Species of this genus are vectors for ST. LOUIS ENCEPHALITIS as well as many other diseases of man and domestic and wild animals.
Insects that transmit infective organisms from one host to another or from an inanimate reservoir to an animate host.
A family of the order DIPTERA that comprises the mosquitoes. The larval stages are aquatic, and the adults can be recognized by the characteristic WINGS, ANIMAL venation, the scales along the wing veins, and the long proboscis. Many species are of particular medical importance.
The development by insects of resistance to insecticides.
Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.
A genus of mosquitoes (CULICIDAE) frequently found in tropical and subtropical regions. YELLOW FEVER and DENGUE are two of the diseases that can be transmitted by species of this genus.
A species of FLAVIVIRUS, one of the Japanese encephalitis virus group (ENCEPHALITIS VIRUSES, JAPANESE). It can infect birds and mammals. In humans, it is seen most frequently in Africa, Asia, and Europe presenting as a silent infection or undifferentiated fever (WEST NILE FEVER). The virus appeared in North America for the first time in 1999. It is transmitted mainly by CULEX spp mosquitoes which feed primarily on birds, but it can also be carried by the Asian Tiger mosquito, AEDES albopictus, which feeds mainly on mammals.
Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics.
The reduction or regulation of the population of mosquitoes through chemical, biological, or other means.
A mosquito-borne viral illness caused by the WEST NILE VIRUS, a FLAVIVIRUS and endemic to regions of Africa, Asia, and Europe. Common clinical features include HEADACHE; FEVER; maculopapular rash; gastrointestinal symptoms; and lymphadenopathy. MENINGITIS; ENCEPHALITIS; and MYELITIS may also occur. The disease may occasionally be fatal or leave survivors with residual neurologic deficits. (From Joynt, Clinical Neurology, 1996, Ch26, p13; Lancet 1998 Sep 5;352(9130):767-71)
Compounds that cause reproductive sterility in organisms. They are sometimes used to control pest populations by sterilizing males within the population.
A genus of FLAVIVIRIDAE containing several subgroups and many species. Most are arboviruses transmitted by mosquitoes or ticks. The type species is YELLOW FEVER VIRUS.
Use of naturally-occuring or genetically-engineered organisms to reduce or eliminate populations of pests.
Invertebrates or non-human vertebrates which transmit infective organisms from one host to another.
Infections with nematodes of the superfamily FILARIOIDEA. The presence of living worms in the body is mainly asymptomatic but the death of adult worms leads to granulomatous inflammation and permanent fibrosis. Organisms of the genus Elaeophora infect wild elk and domestic sheep causing ischemic necrosis of the brain, blindness, and dermatosis of the face.
The process of laying or shedding fully developed eggs (OVA) from the female body. The term is usually used for certain INSECTS or FISHES with an organ called ovipositor where eggs are stored or deposited before expulsion from the body.
A genus of mosquitoes (CULICIDAE) that are known vectors of MALARIA.
A genus of bacteria comprised of a heterogenous group of gram-negative small rods and coccoid forms associated with arthropods. (From Bergey's Manual of Systematic Bacteriology, vol 1, 1984)
Substances causing insects to turn away from them or reject them as food.
A genus of filarial nematodes.
Number of individuals in a population relative to space.
The capability of producing eggs (OVA) from which young are hatched outside the body. While mostly referring to nonmammalian species, this does include MAMMALS of the order MONOTREMATA.

An overview of the evolution of overproduced esterases in the mosquito Culex pipiens. (1/958)

Insecticide resistance genes have developed in a wide variety of insects in response to heavy chemical application. Few of these examples of adaptation in response to rapid environmental change have been studied both at the population level and at the gene level. One of these is the evolution of the overproduced esterases that are involved in resistance to organophosphate insecticides in the mosquito Culex pipiens. At the gene level, two genetic mechanisms are involved in esterase overproduction, namely gene amplification and gene regulation. At the population level, the co-occurrence of the same amplified allele in distinct geographic areas is best explained by the importance of passive transportation at the worldwide scale. The long-term monitoring of a population of mosquitoes in southern France has enabled a detailed study to be made of the evolution of resistance genes on a local scale, and has shown that a resistance gene with a lower cost has replaced a former resistance allele with a higher cost.  (+info)

Replication of dengue type 2 virus in Culex quinquefasciatus (Diptera: Culicidae). (2/958)

We were able to infect Culex quinquefasciatus by the parenteral route with dengue virus type 2. The percentage of mosquitoes infected was dose dependent and we obtained a rate of 45.6% infected Cx. quinquefasciatus when a 10(5.9) MID50 (mosquito infectious dose for 50% of the individuals as measured in Aedes aegypti) of dengue virus type 2 per mosquito was used. Infection was detected by an immunofluorescent assay performed on mosquito head squashes 14 days after infection. The replication of dengue virus in Cx. quinquefasciatus was either at a very low level of magnitude or generated a large number of noninfectious particles since the triturated bodies of infected Cx. quinquefasciatus did not infect Ae. aegypti mosquitoes when inoculated parenterally. We were unable to infect Cx. quinquefasciatus females orally with an artificial meal that infected 100% of Ae. aegypti females. These findings lead us to agree with the consensus that Cx. quinquefasciatus should not be considered a biological vector of dengue viruses.  (+info)

Can vector control play a useful supplementary role against bancroftian filariasis? (3/958)

A single campaign of mass treatment for bancroftian filariasis with diethylcarbamazine (DEC) in Makunduchi, a town in Zanzibar, United Republic of Tanzania, combined with elimination of mosquito breeding in pit latrines with polystyrene beads was followed by a progressive decline over a 5-year period in the microfilarial rate from 49% to 3%. Evidence that vector control had contributed to this long-term decline was obtained by comparison with another town, Moga, where a DEC campaign was used without vector control and where resurgence of microfilariae could be observed 3-6 years after the campaign. In Zanzibar town, treatment of 3844 wet pit latrines and cesspits with polystyrene beads reduced the adult mosquito population in houses by about 65%. Supplementary treatment of open drains and marshes with Bacillus sphaericus produced little or no additional reduction compared to a sector of the town where only pit treatment with polystyrene was carried out. The cost and effort of achieving the 65% reduction in mosquito population could hardly be justified for its impact on filariasis alone, but its noticeable impact on biting nuisance might help to gain community support for an integrated programme.  (+info)

Bancroftian filariasis on Pemba Island, Zanzibar, Tanzania: an update on the status in urban and semi-urban communities. (4/958)

Cross-sectional clinical, parasitological and entomological surveys for bancroftian filariasis were conducted in Konde, Chake Chake and Kengeja, three urban and semiurban communities on Pemba Island, and the results were compared with similar surveys done 15 years earlier. The overall prevalences of clinical manifestations among males aged 15 years or more (n = 614) was remarkably similar to those recorded 15 years earlier: elephantiasis 1.4% in 1975 and 1.1% in 1990; hydrocele, 22.4% and 21.8%, respectively. However, when the communities were compared individually, there was a reduction in the hydrocele prevalence in Konde from 22.4% to 11.5% and an increase in Kengeja from 27.0% to 35.5%. The overall microfilarial prevalence found during night blood surveys of all individuals aged 1 year or more (n = 2687) was 9.7%, compared to 14.2% recorded in 1975. The reduction was most pronounced in Konde. Of 1052 female mosquitoes caught with CDC light traps, 95% were Culex quinquefasciatus and 5% Anopheles gambiae s.l. Infective larvae of Wuchereria bancrofti were found only in the former. The filariasis situation in urban and semiurban communities on Pemba Island appears not to have changed considerably over the last 15 years.  (+info)

Use of base excision sequence scanning for detection of genetic variations in St. Louis encephalitis virus isolates. (5/958)

Twenty-two isolates of St. Louis encephalitis (SLE) virus of various geographical origins (Brazil, Argentina, Panama, Texas, Missouri, Maryland, California, and Florida) were examined for genetic variation by the base excision sequence scanning (BESS T-scan) method. A fragment was amplified in the envelope gene with the forward primer labeled in the PCR. The BESS T-scan method determined different clusters according to the profiles generated for the isolates and successfully grouped the isolates according to their geographical origins. Two major clusters, the North American cluster (cluster A) and the South and Central American cluster (cluster B), were defined. Two subgroups, the Texas-California subgroup (subgroup A1) and the Missouri-Maryland-Florida subgroup (subgroup A2), were distinguished within group A. Similarly, group B strains were subclustered to a South American subgroup (subgroup B1) and a Central American subgroup (subgroup B2). These results were consistent with those obtained by DNA sequencing analysis. The ability of the BESS T-scan method to discriminate between strains that present with high degrees of nucleotide sequence similarity indicated that this method provides reliable results and multiple applications for other virus families. The method has proven to be suitable for phylogenetic comparison and molecular epidemiology studies and may be an alternative to DNA sequencing.  (+info)

Study on the transmission threshold value of bancroftian filariasis. (6/958)

OBJECTIVE: To elucidate the transmission dynamic and epidemic trend of bancroftian filariasis occurred under the condition with no control measure taken 5 years after elimination of filariasis. METHODS: A 10-year longitudinal observation (from 1984 to 1994) was made in Huayuan Village in Shengli Township of Tancheng County, which used to be a high bancroftian filariasis-endemic area in southern part of Shandong Province. RESULTS: The microfilarial rate decreased from 0.56% before the study to 0.12% after the study and 8 out of the 9 previous microfilaria-positive cases became negative gradually. During the study period, 6 new microfilaremia cases were detected, 5 of which became negative naturally within 3 to 4 years. Eighty-eight point eight nine per cent of the detected patients with microfilaremia converted into IgG4-negative after 10 years. The natural infective rate of vectors decreased year by year and became zero by the tenth year of the study, the annual transmission potency decreased also from 3.47 to zero by the tenth year. CONCLUSIONS: It showed that under the local natural environment the biting rate representing the vector density which was obtained by capture method was from 24.1 to 52.5 person/night among the residents who did not use mosquito nets, and 13.5 to 21 person/night among the residents who used mosquito nets. The microfilarial rate of 0.56% in population with the average microfilarial density of 6.6 to 20.7 capita/60 microliters ear blood of residual microfilaria-positive patients might be considered as the terminal threshold of transmission.  (+info)

Model ecosystem evaluation of the environmental impacts of the veterinary drugs phenothiazine, sulfamethazine, clopidol, and diethylstilbestrol. (7/958)

Four veterinary drugs of dissimilar chemical structures were evaluated for environmental stability and penchant for bioaccumulation. The techniques used were (1) a model aquatic ecosystem (3 days) and (2) a model feedlot ecosystem (33 days) in which the drugs were introduced via the excreta of chicks or mice. The model feedlot ecosystem was supported by metabolism cage studies to determine the amount and the form of the drug excreted by the chicks or mice. Considerable quantities of all the drugs were excreted intact or as environmentally short-lived conjugates. Diethylstilbestrol (DES) and Clopidol were the most persistent molecules, but only DES bioaccumulated to any appreciable degree. Phenothiazine was very biodegradable; sulfamethazine was relatively biodegradable and only accumulated in the organisms to very low levels. Data from the aquatic model ecosystem demonstrated a good correlation between the partition coefficients of the drugs and their accumulation in the fish.  (+info)

Production of Cry11A and Cry11Ba toxins in Bacillus sphaericus confers toxicity towards Aedes aegypti and resistant Culex populations. (8/958)

Cry11A from Bacillus thuringiensis subsp. israelensis and Cry11Ba from Bacillus thuringiensis subsp. jegathesan were introduced, separately and in combination, into the chromosome of Bacillus sphaericus 2297 by in vivo recombination. Two loci on the B. sphaericus chromosome were chosen as target sites for recombination: the binary toxin locus and the gene encoding the 36-kDa protease that may be responsible for the cleavage of the Mtx protein. Disruption of the protease gene did not increase the larvicidal activity of the recombinant strain against Aedes aegypti and Culex pipiens. Synthesis of the Cry11A and Cry11Ba toxins made the recombinant strains toxic to A. aegypti larvae to which the parental strain was not toxic. The strain containing Cry11Ba was more toxic than strains containing the added Cry11A or both Cry11A and Cry11Ba. The production of the two toxins together with the binary toxin did not significantly increase the toxicity of the recombinant strain to susceptible C. pipiens larvae. However, the production of Cry11A and/or Cry11Ba partially overcame the resistance of C. pipiens SPHAE and Culex quinquefasciatus GeoR to B. sphaericus strain 2297.  (+info)

Abstract. The mosquito-transmitted pathogen West Nile virus (WNV) is not yet present in the Galápagos Archipelago of Ecuador. However, concern exists for fragile endemic island fauna after population decreases in several North American bird species and pathology in certain reptiles. We examined WNV vector competency of a Galápagos strain of mosquito (Culex quinquefasciatus Say). Field specimens were tested for their capacity to transmit the WN02-1956 strain of WNV after incubation at 27°C or 30°C. Rates of infection, dissemination, and transmission all increased with days post-exposure to WNV, and the highest rates were observed at 28 days. Infection rates peaked at 59% and transmission rates peaked at 44% (of mosquitoes tested). Vector efficiency increased after day 14. Rates of infection but not of transmission were significantly influence by temperature. No vertical transmission was detectable. We demonstrate that Galápagos Cx. quinquefasciatus are competent WNV vectors, and therefore should be
The Transcriptome Profile of the Mosquito Culex quinquefasciatus following Permethrin Selection. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
101 - 1,000 = High, 1,001 - 10,000 = Very High, ,10,000 = Extreme.. 28/Apr/2010: Hanwood had a high catch of 144, with 30 Culex annulirostris. Barren Box yielded a low catch. 27/Apr/2010: There were no seroconversions to either MVEV or KUNV from the bleeds taken on 8/Mar/2010, 15/Mar/2010, 22/Mar/2010, 29/Mar/2010 or 6/Apr. 21/Apr/2010: Hanwood had a high catch of 234, with 52 Culex annulirostris. Barren Box yielded a medium catch of73 and included 42 Culex annulirostris. 16/Apr/2010: The flavivirus isolate from Culex annulirostris trapped at Hanwood on the 22/Mar/10 was Kokobera virus. 14Apr/2010: Hanwood had a high catch of 230, with 159 Culex quinquefasciatus. Barren Box had a low catch. 8/Apr/2010: There was one flavivirus isolate from Culex annulirostris trapped at Hanwood on 29/Mar/2010. 6/Apr/2010: Mosquito numbers continue to be well above average and high from both sites. Hanwood trapped 107 mosquitoes, with 65 Culex annulirostris. Barren Box collected a total of 413 ...
The capability of Beauveria bassiana fungus to kill mosquito larvae was challenged with Aedes aegypti and Culex pipiens quinquefasciatus in a study conducted at the entomology laboratory of the Hea...
101 - 1,000 = High, 1,001 - 10,000 = Very High, ,10,000 = Extreme.. 28/Apr/2015: Mosquito numbers were low. 14/Apr/2015: Nurrangingy had a high catch of 194 mosquitoes, with 177 Culex annulirostris. Ropes Crossing had a trap failure. 8/Apr/2015: The trap was stoled from Nurrangingy. Ropes Crossing produced a low catch. 2/Apr/2015: Nurrangingy had a medium catch of 53 mosquitoes, with 52 Culex annulirostris. Ropes Crossing produced a low catch. 25/Mar/2015: Mosquito numbers were low. 19/Mar/2015: Nurrangingy had a high catch of 233 mosquitoes, with 203 Culex annulirostris. Ropes Crossing produced a low catch. 11/Mar/2015: Nurrangingy had a high catch of 297 mosquitoes, with 283 Culex annulirostris. Ropes Crossing produced a low catch. 5/Mar/2015: Nurrangingy had a medium catch of 65 mosquitoes, with 38 Culex annulirostris. Ropes Crossing produced a low catch. 25/Feb/2015: Nurrangingy had a high catch of 131 mosquitoes, with 55 Culex annulirostris. Ropes Crossing ...
Due to the medical significance of this species, vector surveillance, with the ultimate goal of predicting human cases of SLE virus, is of critical importance. Historically, New Jersey light traps and CDC miniature light traps have been used to monitor the abundance of Culex nigripalpus adults. However, we have found that resting collections made with ground aspirators, provide a superior measure of Culex nigripalpus adult populations. This is because males as well as females in all gonotrophic conditions (host seeking, blood fed, partially blood fed and gravid) are taken in aspirator collections. Due to their green color, newly emerged adults of both sexes can be identified and counted, thus providing an accurate measure of adult emergence. Because Culex nigripalpus females prefer to lay their eggs in freshly flooded ditches, huge numbers of adults are often observed during the wet summer months in south Florida. The vast number of breeding habitats in which this species is found results in ...
Coloured scanning electron micrograph (SEM) of Common house mosquito (Culex pipiens). A female mosquito with prominent antenna and proboscis. Culex species lay their eggs in the form of egg rafts that float in still or stagnant water. In the United States, West Nile virus is transmitted primarily by Culex pipiens mosquitoes. Culex spp. become infected by biting certain birds carrying the West Nile virus and in turn transmits the virus to humans where it can cause encephalitis and meningitis. Culex spp. are also disease vectors of western equine and Saint Louis encephalitis. In addition, Culex spp. are carriers of viral encephalitis and filariasis. Magnification: x6 when shortest axis printed at 25 millimetres. - Stock Image C032/3600
In this work, 246 Bacillus sphaericus strains were evaluated against Aedes aegypti and Culex quinquefasciatus larvae to select the most effective ones to be used as the basis of a national product. All strains were isolated from different regions of Brazil and they are stored in a Bacillus spp. collection at Embrapa Genetic Resources and Biotechnology. The selected strains were characterized by biochemical and molecular methods. Based on selective bioassays, 87 strains were identified as toxic to one or both target species. All of these strains contain genes that encode the 42, 51 kDa proteins that constitute the binary toxin and the 100 kDa Mtx1 toxin. All toxic strains presented a very high LC50 against A. aegypti, so, a product based on any of these B. sphaericus strains would not be recommended for use in programmes to control A. aegypti. S201 had highest activity against C. quinquefasciatus, presenting the lowest LC50 and LC90 in bioassays.. ...
Md.Ataur Rahman, Shakil Ahmed Khan, Md. Tipu Sultan, Md. Rokibul Islam Department of Biotechnology & Genetic Engineering, Islamic University, Kushtia, Bangladesh Insect Biotechnology Division, Institute of Food & Radiation Biology (IFRB), Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka, Bangladesh Key words: Bacillus sphaericus, binary protein, Culex quinquefasciatus, mosquitocidal, biopesticide. Abstract The larvicidal action of the…
TY - JOUR. T1 - Overwintering Studies on Culex tarsalis (Diptera. T2 - Culicidae) in Kern County, California: Temporal Changes in Abundance and Reproductive Status with Comparative Observations on C. quinquefasciatus (Diptera: Culicidae). AU - Reisen, William. AU - Meyer, Richard P.. AU - Milby, Marilyn M.. PY - 1986/5/1. Y1 - 1986/5/1. N2 - Population ecology of Culex tarsalis Coquillett was studied at Hart Park, Kern County, Calif., during the winters of 1982-83 and 1983-84. Female relative abundance declined during autumn to a minimum in December and January. Most females collected during winter were empty, inseminated, and nulliparous, indicating a cessation of gonotrophic activity. However, observations on ovarian morphometry indicated that the hibernating states achieved included reproductive diapause, quiescence, and perhaps oligopause. Females remained vagile and readily repopulated resting sites after removal sampling. Relative abundance increased in late February and March in ...
Abstract St. Louis encephalitis (SLE) virus has continued to be active in the Colorado Desert region of Southern California (Coachella and Imperial Valleys) since 1973, while it has virtually disappeared from the Sacramento and San Joaquin Valleys of Central California. Consequently, comparative vector competence studies were undertaken from 1978 to 1981 to evaluate the susceptibility of populations of Culex quinquefasciatus and Culex tarsalis from the San Joaquin and Coachella/Imperial Valleys to oral infection with representative SLE viral strains from each geographical area. Culex quinquefasciatus females from both areas were equally susceptible to infection with both viral strains by the pledget and viremic chick feeding techniques. Although susceptibility profiles were similar by both feeding techniques, infection thresholds (i.e., ID50s) obtained with Cx. quinquefasciatus females were at least 10,000-fold lower when fed on viremic chicks than on virus soaked pledgets. Culex tarslis females from
Journal of the American Mosquito Control Association publishes works containing research in the areas of mosquito and vector biology, systematics, and control.
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Odors from fresh chicken feces in water elicited upwind flight of host-seeking female Culex quinquefasciatus mosquitoes in a dual-choice olfactometer. Acidification of the slurry of chicken feces and water resulted in increased attraction, whereas alkaline slurries of chicken feces and water control …
The Coronator Group encompasses Culex coronator Dyar & Knab, Culex camposi Dyar, Culex covagarciai Forattini, Culex ousqua Dyar, Culex usquatissimus Dyar, Culex usquatus Dyar and Culex yojoae Strickman. Culex coronator has the largest geographic distribution, occurring in North, Central and South America. Moreover, it is a potential vector-borne mosquito species because females have been found naturally infected with several arboviruses, i.e., Saint Louis Encephalitis Virus, Venezuelan Equine Encephalitis Virus and West Nile Virus. Considering the epidemiological importance of Cx. coronator, we investigated the wing shape diversity of Cx. coronator from South and Southeast Brazil, a method to preliminarily estimate population diversity. Field-collected immature stages of seven populations from a large geographical area in Brazil were maintained in the laboratory to obtain both females and males linked with pupal and/or larval exuviae. For each individual female, 18 landmarks of left wings were marked
Mosquitoes of the genus Culex are the vectors of bird-hosted arboviruses that occasionally cause disease in humans, such as Sindbis virus (SINV) (Alphavirus) West Nile virus (WNV) and Usutu virus (USUV) (Flavivirus), all circulating in Europe. Seven potential vector species are recognised within the genus Culex in Europe, most of which show a preference for biting birds (ornithophilic). One of the species, the northern house mosquito Cx. pipiens, has been described as having two separate biotypes: Cx. pipiens biotype pipiens and Cx. pipiens biotype molestus, of which the latter fulfils certain criteria that separates it from the other: it does not hibernate in winter (homodynamic), it utilizes underground larval habitat (hypogeous), it can mate in confined spaces (stenogamous), it can lay its first egg batch without a blood meal (autogenous), and it feeds on humans (mammophilic). Culex pipiens biotype molestus has been reported from many central and southern European countries but never from ...
This series is about mosquitoes (Culex pipiens complex) and insecticide resistance. It ran live on the site over two weeks in 2015 as Linda Kothera, a mosquito biologist at the Center for Disease Control (CDC) in Fort Collins, Colorado answered reader questions. Mosquitoes are vectors of human and other animal diseases. For example, Culex pipiens…
We report a laboratory colony of Culex quinquefasciatus mosquitoes were experimentally able to salivate Zika virus (ZIKV, Flaviviridae; Flavivirus) at 16 days post infection (dpi). ZIKV RNA was detected in bodies and in saliva deposited on filter paper cards with subsequent studies demonstrating the presence of live ZIKV in saliva.
Belkin JN, Heinemann SJ, Page WA. 1970. Mosquito Studies (Diptera, Culicidae) XXI. The Culicidae of Jamaica. Contributions of the American Entomological Institute 6(1).. Blosser, EM, Stenn, T, Acevedo, C, and Burkett-Cadena, ND. 2016. Host use and seasonality of Culex (Melanoconion) iolambdis (Diptera: Culicidae) from eastern Florida, USA. Acta tropica, 164, pp. 352-359.. Carpenter SJ, LaCasse WJ. 1955. Mosquitoes of North America (North of Mexico). University of California Press, Berkeley and Los Angeles, CA. pp 360.. Darsie Jr, RF. 2002. Redescription of the pupa of Culex (Melanoconion) iolambdis Dyar. Journal of the American Mosquito Control Association 18: 277-279.. Darsie Jr, RF, and Ward RA. 2005. Identification and Geographical Distribution of the Mosquitoes of North America, North of Mexico. University Press of Florida, Gainesville, FL. pp. 400.. Edman, JD. 1979. Host-feeding patterns of Florida mosquitoes (Diptera: Culicidae). Journal of Medical Entomology 15: 521-525.. Foote RH. 1952. ...
In a paper published in the February issue of the American Journal of Tropical Medicine and Hygiene, Dr. Dina Fonseca and her team identified different strains of the southern house mosquito (Culex quinquefasciatus). Until now, researchers were unaware that this one species of mosquito could have consistent variations in its genetic makeup and that the geographical distribution of the mosquito variants explained the occurrence of serious diseases. The diseases include elephantiasis (a disfiguring disease), West Nile virus and other encephalitides, avian malaria and poxvirus. The surprising thing is that there is actually structure in this mosquito. Researchers had thought that all populations of this mosquito were the same, explained Fonseca, who was the first to examine the genetic makeup of this important disease transmitter ...
Two species of arbovirus vector, Culex torrentium and Culex pipiens (Diptera: Culicidae), occur in several European countries, but difficulties in their accurate identification and discrimination have hampered both detailed and large-scale distribution and abundance studies. Using a molecular identification method, we identified to species 2559 larvae of Cx. pipiens/torrentium collected from 138 sites in 13 European countries ranging from Scandinavia to the Mediterranean coast. In addition, samples of 1712 males of Cx. pipiens/torrentium collected at several sites in the Czech Republic were identified to species based on the morphology of their hypopygia. We found that the two species occur together in large areas of Europe, and that Cx. torrentium dominates in northern Europe and Cx. pipiens dominates south of the Alps. The transition in dominance occurs in central Europe, where both species are roughly equally common. There was a strong correlation between the length of the growing season at ...
One of the primary avian vectors of West Nile virus in the northern United States, Culex pipiens (L.), enters an adult diapause in late summer and early fall in response to short daylength and low temperature. The mosquitoes first appear in overwintering sites such as caves, culverts, and unheated basements as early as August and remain there until spring when environmental conditions again become favorable for development. Only females enter diapause and most are inseminated prior to entering the hibernation site. In preparation for diapause, females increase their lipid reserves by feeding on sugar-rich sources such as nectar and rotting fruit. Although females programmed for diapause can be enticed to take a blood meal by being placed in close proximity to a host, it appears this rarely, if ever, happens in the field. Failure of diapausing females to take a blood meal is presumably the reason that so few of the overwintering females harbor West Nile virus. Many aspects of diapause in Cx. ...
West-Nile virus provides an interesting, observed, epidemiological model for infectious disease. This is because, since its incursion into the Northern Hemisphere, it has rapidly spread across North America. This article, by Chen et al describes statistical models constructed to predict West-Nile virus infection rates in female Culex Tarsalis Coquillett mosquitoes in the Canadian Prairies. Associations…
Before humans arrived on the islands, there were no mosquitoes or any other biting or blood sucking insects. By the mid 1800s however, mosquitoes were firmly established throughout the archipelago introduced inadvertently through human activities. Of these, the southern house mosquito (Culex quinquefasciatus) is the greatest threat to Hawaiian birds. Introduced in 1826, it is the primary vector of Avian Malaria and Avian Pox, and is implicated in the decline and extinction of many native forest birds.. Most of Mauis native forest birds exist where mosquitoes do not; high elevation, northeastern slopes of Haleakalā above ~4500 feet (the mosquito line). This is because mosquitoes cannot survive the cool climate at these altitudes and the parasite (Avian Malaria) cannot develop in its vector.. Kiwikiu and Ākohekohe once occurred throughout low and mid-elevation forests on Maui. They are now extirpated from these habitats and restricted to just a tiny fraction of their historic ranges due to ...
Brazilian researchers said Thursday they have found Zika in Culex mosquitoes in what could be an important discovery. But they cautioned that more study was needed. Until now, Zika was believed to be carried mainly by the Aedes aegypti mosquito, which is much less numerous. Culex mosquitoes are much more widespread.
Culex n : type genus of the Culicidae: widespread genus of mosquitoes distinguished by holding the body parallel to the resting surface [syn: {genus Culex}] dictd_www.dict.org_gcide Culex Culex \Culex\, n. [L., a gnat.] (Zo[o]l.) A genus of mosquitoes of the family {Culicidae}, to which most of the North American species belong. Some members of this genus are exceedingly annoying, as {Culex sollicitans}, which bree
Currently, I am a Postdoctoral Research Associate in the Department of Biological Sciences and the Eck Instititue for Global Health at the University of Notre Dame. The Severson Lab studies the genetics and genomics of mosquitoes that transmit human diseases. I study genetic mechanisms that underlie complex traits associated with bloodfeeding in Culex pipiens and Aedes aegypti. West Nile Virus is just one disease transmitted by the Culex pipiens complex and Aedes aegypti is a vector of multiple neglected tropical diseases including Dengue and Chikungunya. As no vaccine exists for these diseases, transmission is prevented through mosquito control. A more complete understanding of the genes and genetic pathways that regulate female reproductive behaviors will inform development and implementation of vector control methods. Our ability to generate informative genetic markers (SNPs) and infer quantitative trait loci (QTL) has increased dramatically with the advent of massively parallel sequencing ...
Currently, I am a Postdoctoral Research Associate in the Department of Biological Sciences and the Eck Instititue for Global Health at the University of Notre Dame. The Severson Lab studies the genetics and genomics of mosquitoes that transmit human diseases. I study genetic mechanisms that underlie complex traits associated with bloodfeeding in Culex pipiens and Aedes aegypti. West Nile Virus is just one disease transmitted by the Culex pipiens complex and Aedes aegypti is a vector of multiple neglected tropical diseases including Dengue and Chikungunya. As no vaccine exists for these diseases, transmission is prevented through mosquito control. A more complete understanding of the genes and genetic pathways that regulate female reproductive behaviors will inform development and implementation of vector control methods. Our ability to generate informative genetic markers (SNPs) and infer quantitative trait loci (QTL) has increased dramatically with the advent of massively parallel sequencing ...
The Culex pipiens subgroup of mosquitoes contains some of the most important vector species internationally. In Australia, there are four species currently present that belong to that subgroup, with Culex molestus one species that is closely associated with urban environments, and concern has been raised as to the potential role this species may play in the transmission of exotic and endemic Flaviviruses. An understanding of the biology and ecology of this species is crucial for the establishment of laboratory colonies and further experimentation. Using field‐collected adult mosquitoes, a laboratory colony of Cx. molestus was established and sustained for 10 generations. The species was strongly stenogamous and, across all generations, over 95% of females laid autogenous egg rafts with a mean egg raft size of 54.2 ± 17.7 eggs. The females did not display a preference for highly organic oviposition water and readily laid eggs in clean water. While colony maintenance could be sustained on ...
Insect cuticular hydrocarbons are known to have a protection and a pheromonal role. Quantitative changes in the cuticular hydrocarbons of Diptera occur over time and were used in a preliminary attempt to age-grade of mosquitoes. Halofenozide (RH-0345) is an insect growth regulator belonging to the class of non-steroidal ecdysone agonists. In a previous study, halofenozide was found to be effective against larvae of Culex pipiens L. (Diptera: Culicidae) and exerted its toxicity primarily by the induction of a precocious lethal molting (Boudjelida et al., 2005). In this study, newly molted 4th instar larvae of C. pipiens were exposed to halofenozide (23% EC) for 24 h at LC50 (12.58 µg/l) and LC90 (28.58µg/l) concentrations under standard laboratory conditions according to WHO recommendations. Then, to better understand the mode of action of halofenozide, the profiles of the cuticular hydrocarbons in treated and control larvae were evaluated using gas chromatography (GC) and gas chromatography-mass
Culex nigripalpus (Florida SLE mosquito) is a species of medium-sized, dark, blood-feeding mosquito of the family Culicidae. Culex nigripalpus has been found to occur in the following countries: Anguilla, Bahamas, Barbados, Belize, Brazil, Colombia, Costa Rica, Cuba, Dominica, Dominican Republic, Ecuador, El Salvador, French Guiana, Grenada, Guadeloupe , Guatemala, Guyana, Haiti, Honduras, Jamaica, Martinique, Mexico, Montserrat , Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Saint Lucia, Saint Vincent and the Grenadines, Suriname, Trinidad and Tobago, United States, Venezuela, Virgin Islands. In the United States, it is found from Texas to North Carolina in warm, humid coastal habitats and in the Mississippi River basin as far north as Kentucky. Culex nigripalpus larvae live in fresh water in semi-permanent or permanent marshes, ditches, retention ponds, and grassy pools, and females prefer to lay eggs in freshly flooded ditches. Culex nigripalpus is a principle disease vector in Florida - ...
TY - JOUR. T1 - Activity of free and clay-bound insecticidal proteins from Bacillus thuringiensis subsp. israelensis against the mosquito Culex pipiens. AU - Lee, Lan Na. AU - Saxena, Deepak. AU - Stotzky, G.. PY - 2003/7/1. Y1 - 2003/7/1. N2 - Bacillus thuringiensis subsp. israelensis produces parasporal insecticidal crystal proteins (ICPs) that have larvicidal activity against some members of the order Diptera, such as blackflies and mosquitoes. Hydrolysis of the ICPs in the larval gut results in four major proteins with a molecular mass of 27, 65, 128, and 135 kDa. Toxicity is caused by synergistic interaction between the 25-kDa protein (proteolytic product of the 27-kDa protein) and one or more of the higher-molecular-mass proteins. Equilibrium adsorption of the proteins on the clay minerals montmorillonite and kaolinite, which are homoionic to various cations, was rapid (,30 min for maximal adsorption), increased with protein concentration and then reached a plateau (68 to 96% of the ...
ROSADO-SOLANO, Doris Natalia et al. LARVICIDAL ACTIVITY OF ESSENTIAL OILS AND EXTRACTS OF COLOMBIAN PLANTS AGAINST CULEX QUINQUEFASCIATUS (DIPTERA: CULICIDAE). Iteckne [online]. 2018, vol.15, n.2, pp.79-87. ISSN 1692-1798. http://dx.doi.org/10.15332/iteckne.v15i2.2069.. Essential oils and extracts obtained by microwave hydrodistillation and percolation from plants organically cultivated in the farm El Limonal Piedecuesta- Santander, Colombia, were characterized by Gas Chromatography coupled with Mass Spectrometry. The insecticidal activity against third instar larva of Culex quinquefasciatus and the inhibition activity of acetylcholinesterase of those compounds were studied. Also, the toxicity was evaluated against the zebrafish (Danio rerio). Our results show that the Ruta graveolens essential oil had the highest larvicidal activity with a LC50 7.20±0.19 μg/mL, a moderate inhibition over the enzyme with an IC50 44.98±1.1 μg/mL and a moderate toxicity with a LC50 13.33±0.59 ...
Cry4Ba is a δ-endotoxin produced by Bacillus thuringiensis subsp. israelensis and Cyt2Aa2 is a cytolytic δ-endotoxin produced by B. thuringiensis subsp. darmstadiensis. Cry4Ba produced in Escherichia coli was toxic to Aedes aegypti larvae (LC50= 140 ng ml-1) but virtually inactive to Culex quinquefasciatus larvae. Cyt2Aa2 expressed in E. coli exhibited moderate activity against A. aegypti and C. quinquefasciatus larvae with LC50values of 350 and 250 ng ml-1, respectively. Co-expression of both toxins in E. coli dramatically increased toxicity to both A. aegypti andC. quinquefasciatus larvae (LC50= 7 and 20 ng ml-1, respectively). This is the first report to demonstrate that Cry4Ba and Cyt2Aa2 have high synergistic activity against C. quinquefasciatus larvae. © 2005 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved ...
Coloured scanning electron micrograph (SEM) of Southern house mosquito (Culex quinquefasciatus). It is the vector of Wuchereria bancrofti, avian malaria, and arboviruses including St. Louis encephalitis virus, Western equine encephalitis virus, and West Nile virus. Magnification: x5. 5 when shortest axis printed at 25 millimetres. - Stock Image C032/3845
|i|Background & Objectives|/i|. The plan of this work was to study the larvicidal activity of |i|Cassia occidentalis|/i| (Linn.) against the larvae of |i|Culex quinquefasciatus|/i|. These larvae are the most significant vectors. They transmit the parasites and pathogens which cause a deadly disease like filariasis, dengue, yellow fever, malaria, Japanese encephalitis, chikungunya, and so forth, which are considered harmful towards the population in tropic and subtropical regions. |i|Methods|/i|. The preliminary laboratory trail was undertaken to determine the efficacy of petroleum ether and N-butanol extract of dried whole plant of |i|Cassia occidentalis|/i| (Linn.) belonging to the family Caesalpiniaceae at various concentrations against the late third instar larvae of |i|Culex quinquefasciatus|/i| by following the WHO guidelines. |i|Results|/i|. The results suggest that 100%
An entomological monitoring of Japanese encephalitis vectors from the Cuddalore district, Tamil Nadu was undertaken at biweekly intervals for 1 hr after dusk for five years to find out the abundance and JE virus activity longitudinally in three villages. A total of 95,644 vectors belonging to 31 species constituted predominantly by Culex vishnui subgroup and Culex gelidus 98.5%. JE virus was identified from Cx. tritaeniorhynchus (18), Cx. vishnui (1) and Cx. gelidus (6) giving infection rate of 0.482, 0.608 and 0.221 respectively. Abundance of Cx. tritaeniorhynchus and Cx. gelidus differed significantly by area, season and year (P,0.05) whereas Cx. vishuni differed significantly by season and year (P,0.05). Transmission was not observed throughout all the seasons and the infection rate was recorded maximum during Hot-Wet season 0.46 (confidence interval: 0.17-1.02). Culex tritaeniorhynchus dominated the catch and the Culex gelidus steadily increased in its abundance during this period compared ...
Journal of Parasitology Research is a peer-reviewed, Open Access journal that publishes original research articles, review articles, and clinical studies in all areas of basic and applied parasitology. Articles covering host-parasite relationships and parasitic diseases will be considered, as well as studies on disease vectors. Articles highlighting social and economic issues around the impact of parasites are also encouraged. As an international, Open Access publication, Journal of Parasitology Research aims to foster learning and collaboration between countries and communities.
DIEZ, Fernando; BRESER, Víctor J.; QUIRAN, Estela M. and ROSSI, Gustavo C.. New records of mosquitoes (Diptera: Culicidae) in La Pampa Province, Argentina. Rev. Soc. Entomol. Argent. [online]. 2011, vol.70, n.3-4, pp. 347-349. ISSN 0373-5680.. We report the first record of Culex interfor Dyar, Culex lahillei Bachmann y Casal, Culex pipiens Linneo, Culex saltanensis Dyar, Culex tatoi Casal & García and Psorophora discrucians Walker for La Pampa Province. These records increase the number of species present in the province from 10 to 16. In addition, the geographical distribution of Aedes aegypti Linneo, Culex apicinus Philippi, Culex brethesi Dyar, Culex maxi Dyar, Culex quinquefasciatus Say and Ochlerotatus albifasciatus Macquart in the same Province is expanded.. Keywords : Culicidae; Distribution; New records; La Pampa Province; Argentina. ...
Between May 18 and December 4, 1986, 79 seagoing containers and their contents of 22,051 used tires were inspected for adult mosquitoes as well as eggs and larvae. Of the total inspected, 5,507 tires (25%) contained significant amounts of water. No adults or eggs were found. Fifteen tires contained mosquito larvae that were identified as Ae. albopictus, Ae. togoi, Culex pipiens complex, Tripteroides bambusa and Uranotaenia bimaculata. The infestation rate for all species was 6.8 infested tires per 10,000 tires (wet and dry) inspected. Aedes albopictus larvae were most frequently collected, occurring at a rate of 20 infested wet tires per 10,000 inspected.
West Nile Virus Risk - The regions most advanced in degree-day accumulations for Culex tarsalis, the vector for West Nile Virus, are shown in the map below. As of July 13, 2017, areas highlighted in yellow on the map below have accumulated sufficient heat for the initial C. tarsalis to begin to fly whereas areas highlighted in orange have to C. tarsalis flying so wear your DEET to stay protected! ...
Wolbachia are maternally inherited endosymbionts that can invade arthropod populations through manipulation of their reproduction. In mosquitoes, Wolbachia
We collected four field populations of Culex pipiens larvae from Northern Tunisia to study their chlorpyrifos resistance characteristics. Assays were performed using etha..
A Kansas State University study at the Biosecurity Research Institute has found important results in the fight against Zika virus: Culex mosquitoes do not appear to transmit Zika virus.
|span||i|Culex pipiens|/i| serves as the endemic vector of West Nile virus (WNV) in eastern North America, where house sparrows (HOSP, |i|Passer domesticus|/i|) serve as a reservoir host. We tested the hypotheses that: (1) Attraction of |i|Cx. pipiens|/i| to HOSP is influenced by bird age and (2) that age|/span| …
Enzymes such as Esterase A and B (EST), alk. phosphatase (APH), acid phosphatase (ACPH), malate dehydrogenase (MDH), aldehyde oxidase (ALDOX) and glucose-6-phosphate dehydrogenase (G-6-PD) were analyzed in 2 populations of Japanese encephalitis (JE) vectors, C. vishnui and C. fuscocephala. Comparisons were made between population from an agricultural field at Mandya district and suburban areas of Mysore. Heterozygosity and allelic frequencies at different loci were calcd. for each enzyme. The data has indicated significant variation between the 2 populations for EST alleles. In mosquitoes, esterases are an important group of enzymes responsible for the development of insecticide resistance. As the JE vectors under study are subjected to an year round insecticidal selection pressure in Mandya district, the result can be correlated to the ecol. status of the populations. [on SciFinder(R)]. ...
Aedes aegypti is the principal vector of the etiological agents of yellow fever, dengue fever and chikungunya fever. In 1901, Walter Reed and colleagues showed that yellow fever was transmitted by Aedes aegypti. Their work was based on Carlos Finlays hypothesis that mosquito bites could transmit the organism causing the disease. Due to its easy adaptation to laboratory culture it is the most studied species within the Culicinae, and has extensively contributed to our understanding of mosquito biology, physiology, genetics, and vector competence.. The Aedes aegypti complete genome sequence was first published in 2007. About 47% of the genome consists of transposable elements, probably contributing to the expansion in size and organization of the Aedes aegypti genome over time. ...
We isolated Sindbis virus (SINV) from the enzootic mosquito vectors Culex torrentium, Cx. pipiens, and Culiseta morsitans collected in an area of Sweden where SINV disease is endemic. The infection rate in Cx. torrentium mosquitoes was exceptionally high (36 infections/1,000 mosquitoes), defining Cx. torrentium as the main enzootic vector of SINV in Scandinavia.. ...
MATERIALS AND METHODS Bacterial strains - Bacillus cereus, Pseudomonas fluorescens, B. megaterium, Azospirillum brasilense, B. thuringiensis var. israelensis (wild type), B. t. var. israelensis (mutant) and B. sphaericus, obtained from the culture collection of Vector Control Research Centre (VCRC), Pondicherry, were used for the study. Cultivation of bacteria - Nutrient broth (NB) containing (wt/v %) glucose (0.5), beef extract (0.5), sodium chloride (0.5), and peptone (0.5) in distilled water at a pH 7.5 was used to grow P. fluorescens, B. cereus and B. megaterium. Nutrient yeast extract mineral salt medium (NYSM) [composition (wt/v %): glucose, 0.5; peptone, 0.5; sodium chloride, 0.5; beef extract. 0.3; yeast extract, 0.5; magnesium chloride, 0.020; manganous chloride, 0.001; and calcium chloride, 0.010 in distilled water, pH 7.2] was used to grow wild type as well as mutant strains of B. t. var. israelensis (Yousten et al. 1980). And to grow B. sphaericus the medium NYSM without glucose was ...
Berdasarkan hasil penelitian mengenai efektivitas ekstrak daun serai dapur sebagai larvasida nyamuk Culex Sp dapat disimpulkan bahwa Kematian larva nyamuk terendah terjadi pada perlakuan kontrol (0 %) sebanyak 4 ekor, dan kematian larva nyamuk tertinggi terjadi pada pemberian ekstrak daun serai dapur dengan konsentrasi 100% sebanyak 112 ekor .Terdapat perbedaan jumlah kematian larva nyamuk Culex Sp secara signifikan pada berbagai konsentrasi ekstrak daun serai dapur .Berdasarkan hasil penelitian, diketahui semakin tinggi konsentrasi ekstrak daun serai dapur yang diberikan maka semakin banyak kematian larva nyamuk dan kematian larva nyamuk terbanyak terjadi pada konsentrasi 100%.. ...
The Andover Board of Health is advising residents to drain any standing water on their property to prevent their yard from becoming a source of mosquitoes, which thrive in water-holding containers, including birdbaths, childrens toys, stored tires, and clogged gutters. Residents should also ensure that air conditioner drip pans are empty and that water features in landscaping are aerated with pumps. Mosquitoes are the primary vectors transmitters of West Nile virus, a virus that can cause fever, meningitis, or encephalitis. Early symptoms include fever, headache, stiff neck, and muscle weakness. A sumithrin-based insecticide with low mammalian toxicity recently was sprayed south of Route 133, from the Tewksbury line to Bellevue Road, along Bellevue Road and Blanchard Street and the nearby side streets, to address the recent discovery of mosquitoes in Tewksbury that tested positive for West Nile virus. Residents also are being advised to take common-sense precautions: Avoid going outdoors between dusk
Avian malaria is a devastating disease that has decimated numerous bird species. This study sought to identify the vectors of avian malaria at four central Virginia Prothonotary warbler breeding sites. Twenty one thousand mosquitoes were collected and Culex salinarius, Cx. erraticus, and Cx. pipiens/restuans were found to be the dominant species at these sites. Geographic factors, such as crop land and forest type, were determined to be potential indicators for species abundance variation between sites. Of the mosquitoes collected, ninety one (0.4%) were identified as blood fed. The blood fed mosquitoes were found to have fed on avian, mammalian, amphibian, and reptilian hosts and a 12.1% Plasmodium infection rate. Of the non-blood fed mosquito pools tested, Deep Bottom had the highest rate of infection (10.5%). Of the species tested, Cx. salinarius, Cx. erraticus, and Cx. pipiens/restuans were determined to be the most probable vectors of avian malaria the four sites.
Vector control is facing a threat due to emergence of resistance to synthetic insecticides. Compounds that mediate the oviposition of mosquitoes: a possible sustainable tool for the control and monitoring of Culicidae. The present study to evaluate o
Effects of Blackberry Leaf Infusion on Survival Rate and Outcomes of Intraspecific Competition of Culex restuans and Aedes aegypti
ID WOLPP_1_PE1224 STANDARD; PRT; 93 AA. AC WOLPP_1_PE1224; DT 00-JAN-0000 (Rel. 1, Created) DT 00-JAN-0000 (Rel. 2, Last sequence update) DT 00-JAN-0000 (Rel. 3, Last annotation update) DE (WOLPP_1.PE1224). OS WOLBACHIA ENDOSYMBIONT OF CULEX QUINQUEFASCIATUS PEL. OC Bacteria; Proteobacteria; Alphaproteobacteria; Rickettsiales; OC Anaplasmataceae; Wolbachieae; Wolbachia. OX NCBI_TaxID=570417; RN [0] RP -.; RG -.; RL -.; CC -!- SEQ. DATA ORIGIN: Translated from the HOGENOM CDS WOLPP_1.PE1224. CC Wolbachia endosymbiont of Culex quinquefasciatus Pel, complete genome. CC chromosome, complete genome. CC -!- GENE_FAMILY: HOG000219995 [ FAMILY / ALN / TREE ] DR HOGENOMDNA; WOLPP_1.PE1224; -. KW Putative phage related protein. SQ SEQUENCE 93 AA; UNKNOWN MW; UNKNOWN CRC64; MPSGIKPYNI DYSESVIKKD IPALPAKVKL MIKKAIMERL TVDPIGLGKP LKHNLSGQRS LRVSTYRILY YIDVPEHTVV ITAIEHRKDS YQN ...
Looking for online definition of arteria tarsalis lateralis in the Medical Dictionary? arteria tarsalis lateralis explanation free. What is arteria tarsalis lateralis? Meaning of arteria tarsalis lateralis medical term. What does arteria tarsalis lateralis mean?
Macfarlane, R.P., Maddison, P.A., Andrew, I.G., Berry, J.A., Johns, P.M., Hoare, R.J.B., Larivière, M.-C., Greenslade, P., Henderson, R.C., Smithers, C.N., Palma, R.L., Ward, J.B., Pilgrim, R.L.C., Towns, D.R., McLellan, I., Teulon, D.A.J., Hitchings, T.R., Eastop, V.F., Martin, N.A., Fletcher, M.J., Stufkens, M.A.W., Dale, P.J., Burckhardt, D., Buckley, T.R. & Trewick, S.A. 2010. Phylum Arthropoda subphylum Hexapoda: Protura, springtails, Diplura, and insects. Pp. 233-467 in: Gordon, D.P. (ed.) 2010. New Zealand inventory of biodiversity. Volume 2. Kingdom Animalia. Chaetognatha, Ecdysozoa, ichnofossils. Canterbury University Press, Christchurch, New Zealand. Reference page. PDF. Reference page ...
Macfarlane, R.P., Maddison, P.A., Andrew, I.G., Berry, J.A., Johns, P.M., Hoare, R.J.B., Larivière, M.-C., Greenslade, P., Henderson, R.C., Smithers, C.N., Palma, R.L., Ward, J.B., Pilgrim, R.L.C., Towns, D.R., McLellan, I., Teulon, D.A.J., Hitchings, T.R., Eastop, V.F., Martin, N.A., Fletcher, M.J., Stufkens, M.A.W., Dale, P.J., Burckhardt, D., Buckley, T.R. & Trewick, S.A. 2010. Phylum Arthropoda subphylum Hexapoda: Protura, springtails, Diplura, and insects. Pp. 233-467 in: Gordon, D.P. (ed.) 2010. New Zealand inventory of biodiversity. Volume 2. Kingdom Animalia. Chaetognatha, Ecdysozoa, ichnofossils. Canterbury University Press, Christchurch, New Zealand. Reference page. PDF ...
Interprets this as Lithobates AND pipiens so will return all records that have the character string Lithobates pipiens anywhere within a record: e.g., all members of the Lithobates pipiens complex ...
Interprets this as Lithobates AND pipiens so will return all records that have the character string Lithobates pipiens anywhere within a record: e.g., all members of the Lithobates pipiens complex ...
In Australia, flavivirus infections of particular public health importance are DENV, KUNV, MVEV and JEV. Yellow fever is reported under Quarantinable diseases. These infections are nationally notifiable. No specific treatment is available for these diseases and care is largely supportive. A vaccine is available to prevent JEV infection50 but there are no vaccines currently for DENV, MVEV or KUNV infection. Infection with MVEV, KUNV or JEV is usually asymptomatic or produces a non-specific illness, but a small percentage of cases progress to encephalomyelitis of variable severity. Culex annulirostris is the major vector of MVEV, JEV and KUNV. DENV has 4 serotypes, each containing numerous genotypes. The serotypes isolated from returning travellers (and thus involved in local outbreaks) vary by year and geographical region. Infection with 1 serotype probably confers lifelong immunity to that serotype,21 but subsequent infection with a different serotype is 1 factor thought to increase the risk of ...
Home » Literature » Three new species of Culex subgenus Culiciomyia Theobald from Southeast Asia and a redescription of the type of C. tricuspis Edwards from Alor, Lesser Sunda Islands, Indonesia (Diptera: Culicidae ...
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NAD-binding protein involved in the addition of a carboxymethylaminomethyl (cmnm) group at the wobble position (U34) of certain tRNAs, forming tRNA-cmnm(5)s(2)U34.
Culex answers are found in the Tabers Medical Dictionary powered by Unbound Medicine. Available for iPhone, iPad, Android, and Web.
Reisen said he was surprised and humbled to receive the award. John Belkin was a world-class mosquito taxonomist who set the bar for standards for mosquito descriptions.. Reisen, who received the honor at the AMCAs recent conference in Detroit, is the second UC Davis-affiliated entomologist to receive the award. Tom Zavortink, research associate with the Bohart Museum of Entomology at UC Davis and a retired professor of biology at the University of San Francisco, won the award in 1984.. Past recipients hail from England, Australia, Argentina, Brazil, Japan and Panama, as well as the United States (California, Florida, Utah, Illinois, Maryland, Pennsylvania and Washington D.C.) Reisen works in CVECs Arbovirus Research Program and serves as an adjunct professor with the Department of Pathology, Microbiology and Immunology at the UC Davis School of Veterinary Medicine. He currently focuses his research on Culex mosquitoes and their ability to transmit arboviruses, including West Nile virus. ...
Japanese encephalitis (JE) is an infectious disease that is caused by a virus transmitted by mosquitoes. Domestic and feral pigs, some species of birds, and humans are all involved in the transmission cycle of this very serious zoonosis. JE is endemic in some areas of Asia, where the major vector identified is Culex tritaeniorhynchus. Even though this specific mosquito is not present in US, all vectors competent for West Nile virus are potentially competent for JEV too, posing a serious threat for the US. Modeling JE presents major challenges, as all vector-borne zoonoses. Due to the complexities of multiple populations involved, the direct use of a network approach, similar to the one used by our group to model RVF [1], will lead to a large set of equations with many parameters to be estimated. To overcome this problem, the PI proposes to explore novel modeling approaches based on interconnected networks [2]. Interconnected networks are an abstract representation where two or more simple ...
The official explained that this year there has been no death due to dengue.. It works to close 2019 without deaths for this disease that can be prevented.. In recent days mosquitoes have proliferated in several parts of the city after the rains, but many are of the culex species, which are only a nuisance, the one that is at risk is Aedes aegypti.. To attack the vector of dengue, zika, and chikungunya, Vector and Zoonosis personnel travel through the homes of the riskiest areas and there are intensified actions for the elimination of hatcheries and the application of abbe. Where cases or suspects are recorded, it is fumigated to attack the adult mosquito. Source: el debate. The Mazatlan Post. ...
Culex pipiens. Culex Pipiens Pipiens Mosquitoes: Taxonomy, Distribution, Ecology. 2000. ISBN 9789546421036. Retrieved 31 ...
The Roman poet Virgil in his poem Culex lines 163-201, describing a shepherd having a fight with a big constricting snake, ... "Appendix Vergiliana: Culex". Wallace, Howard (1948). "Leviathan and the Beast in Revelation". The Biblical Archaeologist. 11 (3 ...
against Culex quinquefasciatus." Parasitol Res. 2008 Sep;103(4):959-62 Blumea - Journal of Plant Taxonomy and Plant Geography, ... The essential oil had significant toxic effect against early fourth-instar larvae of Culex quinquefasciatus with LC50 = 71.71 ...
Culex neavi, Culex univittatus, Eretmapodites silvestris, Mansonia africana, and Mansonia uniformis. However, the majority of ... aegypti) along with Culex quinquefasciatus. The SA Ar 94 strain had been observed causing dissemination infection in Ae. ... Aedes albopictus and Culex quinquefasciatus (Diptera: Culicidae) to Spondweni Virus. PLoS Negl Trop Dis 10(10): e0005083. https ...
"Culex quinquefasciatus (southern house mosquito)". www.cabi.org. "Drosophila suzukii (spotted wing drosophila)". www.cabi.org ... Culex quinquefasciatus (southern house mosquito) Darna pallivitta (nettle caterpillar) Drosophila suzukii (spotted wing ...
"Culex quinquefasciatus (southern house mosquito)". www.cabi.org. "Elatobium abietinum (green spruce aphid)". www.cabi.org. " ... Azores Culex quinquefasciatus (southern house mosquito) Euwallacea destruens Euwallacea fornicatus (tea shot hole borer) ... Culex quinquefasciatus (southern house mosquito) Darna pallivitta (nettle caterpillar) Drosophila suzukii (spotted wing ... Culex quinquefasciatus (southern house mosquito) Frankliniella occidentalis (western flower thrips) Hypogeococcus pungens ( ...
"THREE NEW SPECIES OF CULEX". The Canadian Entomologist. 34 (11): 292-293. doi:10.4039/ENT34292-11. ISSN 0008-347X. Wikidata ...
1990) Genetics of Culex tarsalis. In: Reeves, W. C., Epidemiology and Control of Mosquito-borne Arboviruses in California. ... At the suggestion of the Berkeley research group, she changed from A. aegypti to the mosquito species Culex tarsalis and A. ... 1979) Pilot release of sex-linked multiple translocation into a Culex tarsalis field population in Kern County, California [ ... 1978) Selection of a strain of Culex tarsalis highly resistant to infection following ingestion of western equine ...
The species was first named (as Culex aegypti) in 1757 by Fredric Hasselquist in his treatise Iter Palaestinum. Hasselquist was ... P. F. Mattingly; Alan Stone; Kenneth L. Knight (1962). "Culex aegypti Linnaeus, 1762 (Insecta, Diptera); proposed validation ... International Commission on Zoological Nomenclature (1964). "Culex aegypti Linnaeus, 1762 (Insecta, Diptera): validated and ...
Feeding Habits of Culex tarsalis Coq., a Mosquito Host of the Viruses of Western Equine and St. Louis Encephalitis." Journal of ...
Culex tarsalis (Midwest and West), and Culex quinquefasciatus (Southeast) are the main vector species. The mosquito species ... Goddard LB, Roth AE, Reisen WK, Scott TW (November 2003). "Vertical transmission of West Nile Virus by three California Culex ( ... The important mosquito vectors vary according to area; in the United States, Culex pipiens (Eastern United States, and urban ... Olejnik E (1952). "Infectious adenitis transmitted by Culex molestus". Bull Res Counc Isr. 2: 210-1. Davis LE, DeBiasi R, Goade ...
The first story of the second season, "The Culex Experiment", guest starred Jean Marsh as the villainous Doctor Culex. The ... Instead, Jade Weston, a minor character from "The Culex Experiment" played by Alexandra Milman, was brought back to accompany ... ISBN 086030-1249 Robinson, Nigel (1995). The Tomorrow People: The Culex Experiment. London. Boxtree. ISBN 0-7522-0637-0 ...
aegypti, Aedes albopictus, and Culex quinquefasciatus. Densovirus is an example of how the spread is transformed through ...
gambiae, A. aegypti, and Culex quinquefasciatus. It contains 16,766 protein-coding genes. 2377 genes had an ortholog belonging ...
The western encephalitis mosquito, or Culex tarsalis, is one of the common mosquito vectors for the HP virus because of its ... Both the HP and Flanders viruses are part of the Rhabdoviridae family and are both agents of Culex mosquitoes. The Flanders ... The access to large standing bodies of water are perfect nesting grounds for the Culex mosquitoes to begin laying eggs, away ... "The western encephalitis mosquito,Culex tarsalis". Archived from the original on 25 May 2014. Retrieved 18 October 2013. Reisen ...
Culex quinquefasciatus, Cu. stigmatosoma and Cu. tarsalis. "Plasmodium relictum". Invasive Species Compendium (ISC). CABI ( ...
It mainly infects Culex mosquitoes and birds; humans form a dead-end host. First identified in South Africa in 1959, the virus ... USUV was first identified by Bruce McIntosh in Culex neavei mosquitoes in South Africa in 1959, and is named after the Usutu ... The vector is one of several mosquitoes that bite birds, in Europe particularly Culex pipiens. For example, a 2008-2009 survey ... USUV's host range includes primarily Culex mosquitoes and birds. The main bird hosts are blackbirds (Turdus merula), magpies ( ...
... which he named Culex albopictus (lat. culex "gnat", "midge" and albopictus "white-painted"). Later, the species was assigned to ... The Asian tiger mosquito is similar, in terms of its close socialization with humans, to the common house mosquito (Culex ... "On the Competition Occurring Between Aedes albopictus and Culex pipiens (Diptera: Culicidae) in Italy". Environmental ... pipiens). Among other differences in their biology, Culex pipiens prefers larger breeding waters and is more tolerant to cold. ...
Johnston, C (1855). "Auditory Apparatus of the Culex Mosquito" (PDF). Quarterly Journal of Microscopical Science. 3: 97-102. ...
The major mosquito vector is Culex annulirostris. Human infection occurs only through bites from infected mosquitoes; the virus ...
It has a Culex-like sitting posture. "Anopheles culicifacies". Walter Reed Biosystematics Unit (WRBU). Smithsonian Institution ...
Female mosquitoes of the genus Culex prefer to consume the blood of passerine birds, making them the hosts of the virus. When ... The discovery of the West Nile virus came in 1937, and has since been found in Culex populations causing epidemics throughout ... "Culex pipiens, an Experimental Efficient Vector of West Nile and Rift Valley Fever Viruses in the Maghreb Region". PLOS ONE. 7 ... "Isolation of West Nile virus from Culex mosquitoes". The Journal of the Egyptian Medical Association. 36 (3): 199-208. PMID ...
Culex particeps Adams, 1903 in GBIF Secretariat (2021). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/ ...
Thorsellia has besides in Anopheles also been found to dominate the gut flora in the mosquito species Culex tarsalis, which is ... "Temporal Variations of Microbiota Associated with the Immature Stages of Two Florida Culex Mosquito Vectors". Microbial Ecology ... "Developmental succession of the microbiome of Culex mosquitoes". BMC Microbiology. 15 (1): 140. doi:10.1186/s12866-015-0475-8. ... "Bacterial communities associated with Culex mosquito larvae and two emergent aquatic plants of bioremediation importance". PLOS ...
1924 Bulbophyllum cubicum Ames 1922 Bulbophyllum culex Ridl. 1916 Bulbophyllum cumberlegei (Seidenf.) J.J.Verm., Schuit. & de ...
The mosquito vector was identified as Culex malariager. The fossil was found in what is now the Dominican Republic. The ...
See § Fowl for hosts and § Culex for vectors. Stripe Rust (Puccinia striiformis f. sp. tritici, Pst) is believed to have been a ... Several Culex mosquitoes are common here including C. quinquefasciatus, C. stigmatosoma, and C. tarsalis. Insecticides are ...
A field trial on genetic control of Culex p. fatigans by release of the integrated strain IS-31B. Entomologia Experimentalis et ... Expérience de lutte génetique contra Culex pipiens dans la région de Montpellier. Bulletin Biologique de la France et de la ... A control experiment with chemosterilised male Culex pipiens fatigans in a village near Delhi surrounded by a breeding-free ... Attempted suppression of a semi-isolated Culex tarsalis population by the release of irradiated males: a second experiment ...
It is suggested that it may have adapted to human-made underground systems since the last century from local above-ground Culex ... The London Underground mosquito is a species of mosquito in the genus Culex found in the London Underground. It evolved from ... More specifically, this mosquito, Culex pipiens molestus, breeds all-year round, is cold intolerant, and bites rats, mice, and ... Byrne, K.; Nichols, R.A. (1999). "Culex pipiens in London Underground tunnels: differentiation between surface and subterranean ...
Generally avian malaria organisms are vectored by Culex. Its real vector in Hawaiʻi is the mosquito Culex quinquefasciatus, ...
On the UF / IFAS Featured Creatures Web site Culex (Culex) nigripalpus Theobald Culex (Melanoconion) iolambdis Dyar Culex ... Protist parasites in the phylum Apicomplexa, such as various forms of avian malaria The Culex pipiens pipiens bioform of Culex ... "culex". dictionary.com. Retrieved 2011-07-06. Harbach, Ralph. "Culex Mosquito Taxonomic Inventory". "Mosquito Ecology and ... Some are rarely and only incidentally transmitted by Culex species, but Culex and closely related genera of culicine mosquitoes ...
Semantic Scholar is a free, AI-powered research tool for scientific literature, based at the Allen Institute for AI.. Learn More ...
Lutte contre Culex quinquefasciatus par Bacillus sphaericus : résultats dune campagne pilote dans une grande agglomération ... Segregation of cytoplasmic incompatibility/compatibility properties in culex pipiens fatigans  Subba Rao, Sarala K.; ... A field trial on control of Culex pipiens fatigans wied. by release of males of strain integrating cytoplasmic incompatibility ... Preparation of a cytoplasmically incompatible strain of culex pipiens fatigans for use in genetic control in India  ...
1967)‎. Evaluation of Wuchereria bancrofti infection in Culex pipiens fatigans in Rangoon, Burma*. Bulletin of the World Health ... Evaluation of Wuchereria bancrofti infection in Culex pipiens fatigans in Rangoon, Burma*. ...
Culex tarsalis (Western Encephalitis Mosquito). Western Encephalitis Mosquito. Culex tarsalis. Location: Pryor, Mayes County, ... Culex quinquefasciatus (Southern House Mosquito). Southern House Mosquito. Culex quinquefasciatus. Location: Pryor, Mayes ... Culex erraticus. Life (root) » Animalia (Animals) » Arthropoda (Arthropods) » Hexapoda (Hexapods) » Insecta (Insects) » Diptera ... Culex genus. Life (root) » Animalia (Animals) » Arthropoda (Arthropods) » Hexapoda (Hexapods) » Insecta (Insects) » Diptera ( ...
Larve of Culex pipiens from a rain barrel in a bavarian garden. 2013 July.. Det. by Ton van Haaren.. Last update: 23.08.13 08: ...
... ... Lindquist, A. W., Ikeshoji, T., Grab, B., de Meillon, Botha & Khan, Z. H. (‎1967)‎. Dispersion studies of Culex pipiens ...
Studies of the Genus Culex Linnaeus in Florida. I. Redescription of the pupae of Culex nigripalpus Theobald and Cx. tarsalis ... A Mosquito Culex (Melanoconion) pilosus (Dyar and Knab) (Insecta: Diptera: Culicidae) 1. Diana Vork and C. Roxanne Connelly 2 ... Culex pilosus adults tend to rest inside forests or woodlands during the day, but then fly over open land during the night to a ... Culex (Melanoconion) pilosus (Dyar and Knab 1906) is a small, dark mosquito that tends to feed on reptiles and amphibians. It ...
The predominant species in Germany are Culex pipiens pipiens biotype pipiens and Culex. torrentium, but we also detected Culex ... To facilitate detection of different Culex pipiens forms and their hybrids we established a multiplex real-time PCR. Culex ... such as Culex. pipiens pipiens biotypes pipiens and molestus. ...
We captured and classified 3,032 adult Culex mosquitoes into seven species, with Culex vishnui subgroup mosquitoes making up ... Japanese encephalitis virus (JEV) is transmitted between swine, migratory birds, and Culex mosquitoes, and has circulated ... Illustrated keys to species of Culex (Culex) associated with Japanese encephalitis in Southeast Asia (Diptera: Culicidae). Mosq ... Culex. (. Culex. ) associated with Japanese encephalitis in Southeast Asia (Diptera: Culicidae). . Mosq Systematics 26. : 75. . ...
The function of two P450s, CYP9M10 and CYP6AA7, in the permethrin resistance of Culex quinquefasciatus Year. (2017). Authors. ...
This paper presents information concerning the bionomics of Culex tarsalis Coquillett in Utah County. Observations indicate ... This paper presents information concerning the bionomics of Culex tarsalis Coquillett in Utah County. Observations indicate ... Taylor, Stanley K., "Bionomics of Culex tarsalis Coquillett in Utah County" (1959). Theses and Dissertations. 7899. https:// ...
Mosquitoes of the Culex pipiens complex are found across the globe and are the focus of many research studies. Among the ... Rapid assay to identify the two genetic forms of Culex (Culex) pipiens L. (Diptera: Culicidae) and hybrid populations. Am J ... Genomic differentiation and intercontinental population structure of mosquito vectors Culex pipiens pipiens and Culex pipiens ... Culex (Culex) molestus Forskal (Diptera: Culicidae): neotype designation, description, variation, and taxonomic status. Proc ...
Here, we have assessed the vector competence of the temperate mosquito Culex pipiens f. pipiens to vector JEV genotype III at ... Here, we have assessed the vector competence of the temperate mosquito Culex pipiens f. pipiens to vector JEV genotype III at ... Here, we have assessed the vector competence of the temperate mosquito Culex pipiens f. pipiens to vector JEV genotype III at ... Here, we have assessed the vector competence of the temperate mosquito Culex pipiens f. pipiens to vector JEV genotype III at ...
Effect of hot water leaf and bark extract of Swietenia mahagoni against the Culex quinquefasciatus and Aedes aegypti larvae ... The minimum LC50, LC90 and LC95 values of hot water leaf extract of Swietenia mahagoni against Culex quinquefasciatus Say and ... It was observed that, 5% concentrated hot water leaf extract was the most toxic killing 70% larvae of Culex quiquefasciatus and ... In hot water bark extract of Swietenia mahagoni against Culex quinquefasciatus Say and Aedes aegypti (L.) with 95% confidence ...
10) Culex (Culex) (Diptera, Culicidae). Japanese Journal of Systematic Entomology, 10(1), 9-42. ... Samanidou, A., & Harbach, R.E. (2003). Culex (Culex) tritaeniorhynchus Giles, a newly discovered potential vector of ... Matsuo, K., & Iwaki, M. (1972). Morphological differences between Culex tritaeniorhynchus and Culex pseudovishnui adults from ... Scanning electron microscopic studies on egg surface morphology and morphometrics of Culex tritaeniorhynchus and Culex ...
The detection of JEV RNA in a pool of Culex pipiens caught in 2010 in Italy raised the concern of a putative emergence of the ... The detection of JEV RNA in a pool of Culex pipiens caught in 2010 in Italy raised the concern of a putative emergence of the ... European Aedes albopictus and Culex pipiens Are Competent Vectors for Japanese Encephalitis Virus. Mélissanne de Wispelaere 1 ... European Aedes albopictus and Culex pipiens Are Competent Vectors for Japanese Encephalitis Virus.. PLoS Neglected Tropical ...
Screening of fourteen xerophyte plants as mosquito larvicides for 4th instar Culex pipiens molestus. More effective with high ... Abstract: Screening of fourteen xerophyte plants as mosquito larvicides for 4th instar Culex pipiens molestus. More effective ... Larvicidal efficacy and residual toxicity of selected xerophyte plants against Culex pipiens molestus mosquito. Int J Mosq Res ... Larvicidal efficacy and residual toxicity of selected xerophyte plants against Culex pipiens molestus mosquito. ...
Characterization and distribution of Larval Habitats of Culex pipiens Complex (Diptera: Culicidae) Vectors of West Nile Virus ... and predators were the common characteristics of habitats positive for Culex larvae (P,0.05). Culex larvae were also found to ... Of 116 aquatic habitats surveyed, 48 were positive for larvae of Culex pipiens L. (76.3%) and Cx. quinquefasciatus (23.7%). ... Abstract: The study was conducted to determine the characteristics and distribution of larval habitats of Culex pipiens complex ...
Title : Host-Feeding Patterns of Culex Mosquitoes in Relation to Trap Habitat Personal Author(s) : Patrican, Lisa A.;Hackett, ...
u Culex. HTC je najavio kako uz TPCAST bežični dodatak za Vive, rade i sa Intelom na WiGig bežičnom rješenju te nastoje naći ... u Culex. Po svemu sudeći na sljedećem Mobile World Congressu nećemo vidjeti novi Samsung Galaxy S8, ali to i nije neko ... u Culex. Najznačajnija najava na nedavnom CES 2017 bio je novi Vive tracker, dodatak praćen od Vive baznih stanica, koji će ... u Culex. Tržište Vive dodataka je na pragu da doživi ogroman poticaj, sve zahvaljujući nedavno najavljenom HTC Vive sistemu za ...
title = "Barriers to dissemination of Venezuelan encephalitis viruses in the Middle American enzootic vector mosquito Culex ( ... T1 - Barriers to dissemination of Venezuelan encephalitis viruses in the Middle American enzootic vector mosquito Culex ( ... Barriers to dissemination of Venezuelan encephalitis viruses in the Middle American enzootic vector mosquito Culex ( ... Barriers to dissemination of Venezuelan encephalitis viruses in the Middle American enzootic vector mosquito Culex ( ...
The Culex C³ is an eczema rug with elastic inserts in the shoulder and withers area and elastic closures at the neck and legs. ... The Culex C³ is an eczema rug with elastic inserts in the shoulder and withers area and elastic closures at the neck and legs. ...
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Нүүр хуудас , United States and Mongolia Successfully Conduct Khangai-21 Disaster Response Exercise , CULEX medical ...
  • Effect of hot water leaf and bark extract of a forest tree species (Swietenia mahagoni) against the 3rd instar larvae of Culex quinquefasciatus and Aedes aegypti was studied in vitro using five different concentrations (1-5%) of hot water leaf and bark extracts of Swietenia mahagoni. (banglajol.info)
  • The minimum LC50, LC90 and LC95 values of hot water leaf extract of Swietenia mahagoni against Culex quinquefasciatus Say and Aedes aegypti (L.) with 95% confidence limits were 2.662, 6.968, 8.70 and 2.128, 4.964, 6.054 respectively after 72 hours of exposure. (banglajol.info)
  • In hot water bark extract of Swietenia mahagoni against Culex quinquefasciatus Say and Aedes aegypti (L.) with 95% confidence limits after 72 hours of exposure minimum LC50, LC90 and LC95values were 1.780, 6.540, 9.458 and 1.370, 4.570, 6.430. (banglajol.info)
  • Comparative studies of different formulations of a larval juvenine hormone mimic and conventional insecticides in distilled water and sewage against Culex quinquefasciatus / by Michael Okia. (who.int)
  • Genetic basis of organophosphate resistance in Culex quinquefasciatus say / by A. Chandrasekharan. (who.int)
  • IMSEAR at SEARO: Persistence of hepatitis B viral antigens in Culex quinquefasciatus. (who.int)
  • Culex quinquefasciatus mosquitoes were fed on or inoculated with blood or serum positive for hepatitis B viral antigens and pools of mosquitoes were tested by radioimmunoassay daily for 3 weeks after exposure to detect the viral antigens. (who.int)
  • Here we present the first transcriptomic study examining the effect of P. relictum on the immune system of its vector (the mosquito Culex quinquefasciatus ) at different times post-infection. (archives-ouvertes.fr)
  • Insect-transmitted diseases cause high morbidity however they additionally embody deadly diseases that cause high mortality rates among infected individuals.Many two-winged insects species such as Aedes aegypti, Anopheles stephensi and Culex quinquefasciatus act as vectors. (ijraset.com)
  • Mosquitoes in general and Culex quinquefasciatus in particular have for a long time constituted a source of nuisance due to the diseases they transmit, stings and annoying buzzing. (ijsciences.com)
  • Concentrations ranging beetween 8 10-4g/ml to 40 10-4 g/ml with intervals of 8 10-4 g/ml of Azadirachta indica (Suneem 1%) were used to fight against 100 three instars larvae of Culex quinquefasciatus. (ijsciences.com)
  • One hundred (100) of three instars larvae of Culex quinquefasciatus are used as control and placed in the same jars with 500 ml of distilled water. (ijsciences.com)
  • Metarhizium anisopliae (green muscle) have caused 50% mortality of three instars larvae of Culex quinquefasciatus after 3 days. (ijsciences.com)
  • In summary, both Metharizium anisopliae and Azadirachta indica (Suneem 1%) are effective against three instars larvae of Culex quinquefasciatus. (ijsciences.com)
  • Alves(2002) Potential of some Metarhizium anisopliae isolates for control of Culex quinquefasciatus (Dipt.Culidae).J.of appl.Ent, 126: 504-509. (ijsciences.com)
  • Molecular Diagnosis as well as Anatomical Detection associated with Wolbachia Endosymbiont throughout Wild-Caught Culex quinquefasciatus (Diptera: Culicidae) Mosquitoes and other from Sumatera Utara, Philippines. (alk-inhibitors.com)
  • Solanales: Solanaceae) on juveniles of Culex quinquefasciatus Say. (mset-biospectra.org)
  • A preliminary study was conducted to investigate the effects of green berry, stem and root of Solarium Mourn against juveniles of house frequenting mosquito species Culex quinquefasciatus Say. (mset-biospectra.org)
  • In addition, fixation of the L1014F allele on VGSC and G119S on acetylcholinesterase 1 gene was detected in local Culex quinquefasciatus populations, with frequencies of 95.24 and 100%, respectively. (bvsalud.org)
  • The malaria mosquito, Anopheles gambiae s.s. and the Southern house mosquito, Culex quinquefasciatus, using a World Health Organisation (WHO)-approved topical application bioassay (ii) the brown ear tick, Rhipicephalus appendiculatus, using a climbing repellency assay, and (iii) the red poultry mite, Dermanyssus gallinae, using field trapping experiments. (permaculturenews.org)
  • which is understandable, but here in Arizona we have scarier bugs like Rhipicephalus sanguineus or Culex quinquefasciatus that actually transmit diseases like Rocky Mountain spotted fever and West Nile virus. (azdhs.gov)
  • Culex mosquitoes don't fly long distances, but have been known to fly up to 2 miles (3.2 km). (cdc.gov)
  • Some Culex mosquitoes prefer to live near and bite birds. (cdc.gov)
  • Culex mosquitoes tend to have relatively blunt-shaped posterior abdomens compared to other mosquito genera and are small and delicate (Marshall 2006). (ufl.edu)
  • lays eggs singly, or individually, or sometimes in single-layer patches, but not in rafts like many other Culex species mosquitoes. (ufl.edu)
  • Mosquitoes of the Culex pipiens complex are found across the globe and are the focus of many research studies. (biomedcentral.com)
  • Culex pipiens is one of the most geographically widespread species of mosquitoes. (biomedcentral.com)
  • In this study, microbiome of the three genera of mosquitoes, namely Aedes, Anopheles, and Culex along with their vectorial capacity have been reviewed for assessing their role in mosquito control and transmission. (nih.gov)
  • The mosquito-borne mode of JE transmission was elucidated with the isolation of JE virus from Culex tritaeniorhynchus mosquitoes in 1938 and in field studies that established the role of aquatic birds and pigs in the viral enzootic cycle. (cdc.gov)
  • The aim of this study was to characterize Culex mosquitoes breeding places and to determine their population dynamics in two localities (Dschang and Santchou) separated by a forest cliff in the West Region of Cameroon. (springeropen.com)
  • The proliferation and persistence of Culex mosquitoes independently of the breeding sites and localities might be attributable to the poor environmental management which favor the creation mosquito breeding sites. (springeropen.com)
  • Culex mosquitoes are responsible of high nuisance and painful bites (Nchoutpouen et al. (springeropen.com)
  • This results in a proliferation of wastewater collections which constitute potential breeding sites for Culex mosquitoes, which preferentially breed and adapt in permanent and/or semipermanent, organically polluted water collections (Nchoutpouen et al. (springeropen.com)
  • West Nile virus (WNV) is maintained in nature between birds and Culex species mosquitoes ( 1 , 2 ). (cdc.gov)
  • But we can't use the same traps to catch the Aedes albopictus that we use to catch the West Nile virus-carrying Culex mosquitoes. (cdc.gov)
  • Culex mosquitoes can be trapped with a combination of carbon dioxide and light. (cdc.gov)
  • JEV is transmitted by paddy field breeding mosquitoes of the Culex vishnui subgroup, primarily by Culex tritaeniorhynchus vectors and amplified by pigs / Ardeidae birds in nature. (faunajournal.com)
  • Surging floodwaters along the Murray River have expanded breeding grounds for Culex mosquitoes, which are carriers of the brain disease. (onkaparinganow.com)
  • Numerous species of mosquitoes from the genera Anopheles , Culex , Aedes, and Mansonia serve as the intermediate host. (medscape.com)
  • Lymphatic filariasis is transmitted by different types of mosquitoes for example by the Culex mosquito, widespread across urban and semi-urban areas and Anopheles mainly in rural areas. (who.int)
  • In comparison, mosquitoes such as Culex pipiens-- which is the main vector of West Nile virus in Europe and also actually in the U.S. -- can be up to 10 mm long. (cdc.gov)
  • multiple insemination in Culex pipiens L. (Diptera, Culicidae). (ohio-state.edu)
  • European Aedes albopictus and Culex pipiens Are Competent Vectors for Japanese Encephalitis Virus. (archives-ouvertes.fr)
  • Cornstarch formulations proven to be succeed in maintaining fungus viability, however, the pathogenicity of the microcapsule still not effective to kill Aedes, Culex and Anopheles larvae. (kemkes.go.id)
  • Formulasi ini menghasilkan sediaan mikokapsul yang viable dalam menyimpan jamur B. bassiana, akan tetapi belum cukup efektif untuk menjadi salah satu alternatif pengendalian larva nyamuk Aedes, Anopheles dan Culex. (kemkes.go.id)
  • Objective: To evaluate organic extracts of Mundulea sericea stem bark and leaves for efficacy against Anopheles gambiae and Culex quinqefasciatus larvae. (open-science-repository.com)
  • Anopheles stephensi Culex bitaeniohynchus Cx. (ac.ir)
  • Anopheles (5 species), Armigeres (1 species), Culex (7 species), Aedes (2 species), Mansonia (2 species) and Mimomyia (1 species). (faunajournal.com)
  • This paper presents information concerning the bionomics of Culex tarsalis Coquillett in Utah County. (byu.edu)
  • Culex tritaeniorhynchus is closely associated with rice agriculture- larval densities are highest in areas of rice cultivation, especially when the rice is high and dense, creating optimal shade levels. (si.edu)
  • Culex tritaeniorhynchus from Japan are distinctly larger, produce fewer egg batches and have longer generation times than strains from Pakistan, Bangladesh, and Taiwan. (si.edu)
  • Culex genus was the most represented (90.4%) and was made up of Culex pipiens s.l. (61.79%), Culex duttoni (23.17%) and Culex (Culiciomyia ) sp. (springeropen.com)
  • A field trial on control of Culex pipiens fatigans wied. (who.int)
  • Culex fatigans. (bvsalud.org)
  • Similarly, 5% hot water bark extracts killed 65% and 55% of Culex quiquefasciatus and Aedes aegypti larvae respectively. (banglajol.info)
  • Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak bunga kecombrang (Etlingera elatior jack R.M.sm) terhadap kematian larva nyamuk Culex quenquefasciatus Say. (uwks.ac.id)
  • Hewan coba yang digunakan adalah larva nyamuk Culex quenquefasciatus Say berjumlah 625 ekor. (uwks.ac.id)
  • Barriers to dissemination of Middle American epizootic hemagglutination inhibition subtype I-AB, and enzootic, subtype IE, Venezuelan encephalitis (VE) viruses were examined in a colony of the enzootic vector mosquito, Culex (Melanoconion) taeniopus. (utmb.edu)
  • Culex quinqefasciatus on the other hand is the main vector for parasites that cause filariasis and the virus that cause encephalitis. (open-science-repository.com)
  • In April 2019, a study updating the distribution of Culex coronator in Texas was published in the Journal of the American Mosquito Control Association. (texasmosquito.org)
  • Culex (Culex) coronator mooseri N. subsp. (semanticscholar.org)
  • Culex ( Melanoconion ) pilosus (Dyar and Knab 1906) is a small, dark mosquito that tends to feed on reptiles and amphibians. (ufl.edu)
  • Adult female Culex ( Melanoconion ) pilosus , a mosquito. (ufl.edu)
  • Larva of Culex ( Melanoconion ) pilosus , a mosquito. (ufl.edu)
  • Screening of fourteen xerophyte plants as mosquito larvicides for 4 th instar Culex pipiens molestus . (dipterajournal.com)
  • Produsul Insektum este un insecticid concentrat emulsionabil in apa, foarte eficient in combaterea: tantarilor (Culex pipiens, Anopbeles), mustelor (Musca Domestica), furnicilor, puricilor si altor antropode daunatoare precum paianjanul. (roinsect.ro)
  • Berdasarkan hasil penelitian diperoleh kesimpulan bahwa ekstrak bunga kecombrang (Etlingera elatior jack R.M.sm) mempunyai kemampuan sebagai larvasida terhadap nyamuk Culex quenquefasciatus Say. (uwks.ac.id)
  • Purification, characterization, and kinetic studies of a wild- and an insecticide-insensitive acetylcholinesterase from mosquito (Culex spp. (who.int)
  • Here, we have assessed the vector competence of the temperate mosquito Culex pipiens f. pipiens to vector JEV genotype III at temperatures representative of those experienced, or predicted in the future during the summer months, in the United Kingdom. (bris.ac.uk)
  • The study was conducted to determine the characteristics and distribution of larval habitats of Culex pipiens complex in Tabuk town, Saudi Arabia. (dipterajournal.com)
  • Our study evaluated the efficacy of applying expanded polystyrene beads (EPBs) on the Culex population and the effect on LF transmission. (who.int)
  • Habitats formed of rain-filled pools (93.8%) and leaking underground pump (6.2%) were positive for Culex larvae. (dipterajournal.com)
  • Culex larvae were also found to thrive better in stagnant habitats that devoid of solid wastes and fully exposed to sunlight. (dipterajournal.com)
  • WNV is usually transmitted through the bite of the Culex mosquito, but can also be spread in blood transfusions, organ transplants, breast milk, intrauterine exposure and laboratory-acquired infections. (loinc.org)
  • A female Culex mosquito lays eggs one at a time. (cdc.gov)
  • Culex pilosus females will lay their eggs near ponds or rainwater seepage areas and ditches which may or may not contain vegetation (Putnam 2011). (ufl.edu)
  • The aim of the present study was to assess the larvicidal and repellent activities of extracts from Tylophora indica against Culex quinquefasciatus and Aedes aegypti. (alliedacademies.org)
  • Homogenates from Culex quinquefasciatus also have an AMP deaminase activity that is three times greater than the ADA activity, whereas in Aedes aegypti the AMP deaminase activity is less than 10% of the ADA activity. (biologists.com)
  • Tests were made using adult Aedes albopictus Skuse, the Asian tiger mosquito (an exotic species),and two indigenous species, Culex nigripalpus Theobald and Ochlerotatus triseriatus (Say). (quantumhealth.com)
  • Résultats : Les taux d'éclosion étaient d'environ 90% pour le gîte témoins, 73% et 7% respectivement pour les gîtes Aedes et Culex avec un apport alimentaire. (eujournal.org)
  • coluzzii to the ecological conditions of egg-laying and larval development of Culex and Aedes. (eujournal.org)
  • Results: The hatching rates were about 90% for the control breeding site, 73% and 7% respectively for the Aedes and Culex breeding site with food supply. (eujournal.org)
  • But without food, these rates are 22% for Aedes breeding site and 2% for Culex breeding site. (eujournal.org)
  • coluzzii does not have the ability to survive in Culex breeding site, but it is likely to grow very well in Aedes breeding site. (eujournal.org)
  • Culex quinquefasciatus (left) and Aedes aegypti. (newsweek.com)
  • To Ayres, it seemed obvious to ask whether the Culex mosquito may also be carrying the disease: Culex quinquefasciatus, known in the U.S. as the southern common house mosquito, is even more common than Aedes aegypti in Brazil's urban areas, she said. (pbs.org)
  • To explore their competence as a vector, Ayres fed 200 mosquitos - half Culex and half Aedes aegypti - with Zika-infected blood. (pbs.org)
  • There are over 175 species in the U.S. and the most common, and most dangerous, are the various species in the Culex, Anopheles, and Aedes genera. (megacatch.com)
  • Their vectors are mosquito species from the genera Culex , Aedes , Coquillettidia , and Culiseta . (medicalnewstoday.com)
  • Culex pipiens and Aedes triseriatus Mosquito Susceptibility to Zika Virus. (medscape.com)
  • 20167119 "Identification of microRNAs expressed in two mosquito vectors, Aedes albopictus and Culex quinquefasciatus" Skalsky RL, Vanlandingham DL, Scholle F, Higgs S, Cullen BR BMC Genomics. (mirbase.org)
  • Aedes , Coquillettidia , and Culex ) that feed on both humans and mammals, and are thus able to transmit the infection as well. (pestworld.org)
  • Eggs are laid on the surface of water (Culex and Anopheles types ) or damp soil that is soon to flood (Aedes type ). (cornell.edu)
  • These bacteria could be used for population replacement and suppression of vector organisms such Aedes aegypti mosquito which spreads dengue and yellow fever, Culex pipiens mosquito which spreads West Nile Virus and anopheles mosquito that act as the malaria and filarial vectors. (kenyon.edu)
  • Asian Tiger Mosquito , Aedes-Aegypti Mosquito and Culex Mosquito . (toropest.com)
  • Culex verutus , a new species of the subgenus Culex (Diptera: Culicidae) from Sierra Leone. (si.edu)
  • New Culex ( Acallyntrum ) from the Papuan Subregion (Diptera, Culicidae). (si.edu)
  • In a previous study, halofenozide was found to be effective against larvae of Culex pipiens L. (Diptera: Culicidae) and exerted its toxicity primarily by the induction of a precocious lethal molting (Boudjelida et al. (archives-ouvertes.fr)
  • We show for the first time that the midgut of Culex quinquefasciatus (Say) mosquito larvae harbors halotolerant bacteria. (scialert.net)
  • The program also monitors reports of dead birds (an early sign of the presence of the virus) and investigates areas of stagnant water for the presence of mosquito larvae, specifically from the Culex mosquito , which is the primary carrier of West Nile in Illinois. (thefreedictionary.com)
  • Culex pipiens were collected as larvae and pupae in the Governorate of Jendouba, northern Tunisia, in 2004. (symbiosisonlinepublishing.com)
  • The goal of this work was to investigate the ultrastructural effects of Cry48Aa/Cry49Aa on midgut cells of Bin-toxin-susceptible and -resistant Culex quinquefasciatus larvae. (bris.ac.uk)
  • A virus carried by an infected mosquito from the culex genus family causes St. Louis encephalitis. (shelbycountytn.gov)
  • Infection results from mosquito bites principally Culex tritaeniorhynchus but other mosquito species may be involved ( C. vishnui , India, C. annulirostris , Torres Straits). (pigprogress.net)
  • Abstract Culex pipiens L., the northern house mosquito, is the primary vector of West Nile virus to humans along the east coast of North America and thus the focus of much study. (semanticscholar.org)
  • Microsatellites were isolated and characterized in the northern house mosquito, Culex pipiens, a widespread pest species and important vector of diseases such as West Nile virus, and will be useful for studies of population structure and intraspecific variation in epidemiological characteristics. (semanticscholar.org)
  • Culex pipiens , also known as the northern house mosquito, is the most widely distributed mosquito in the world and is found on every continent except Antarctica. (megacatch.com)
  • The female southern house mosquito (Culex quinquefasciatus say) largely feeds on birds, which results in the transmission of avian malaria, an important contributor to the extinction of several avian species. (phys.org)
  • The mosquito Culex quinquefasciatus poses a substantial threat to human and veterinary health as a primary vector of West Nile virus (WNV), the filarial worm Wuchereria bancrofti , and an avian malaria parasite. (cabi.org)
  • The larvicidal activity of biogenic nanoparticles against filariasis causing Culex mosquito vector has also been evaluated before [17]. (thefreedictionary.com)
  • Culex quinquefasciatus is the principal vector of lymphatic/bancroftian filariasis and also a potential vector of several arboviruses. (dipterajournal.com)
  • Therefore, in the present investigation was undertaken to evaluate ovicidal and larvicidal activities of crude acetone, benzene, ethyl acetate, petroleum ether and aqueous extracts of Kalanchoe pinnata leaf were assayed for their toxicity against filarial vector mosquito, Culex quinquefasciatus . (dipterajournal.com)
  • Culex can also be a vector for St. Louis encephalitis. (tucsonsentinel.com)
  • If Culex quinquefasciatus is proven to spread Zika, it would a huge deal, says Adriana Costero-Saint Denis, a vector biology program officer at the National Institute of Allergy and Infectious Diseases. (newsweek.com)
  • That's a worry, Ayres says, because "we don't have any vector control program for Culex , as it's not [considered] a very important mosquito. (newsweek.com)
  • We can't yet conclude [Culex is] a vector. (pbs.org)
  • Only then, she said, will she feel confident enough to postulate whether Culex mosquitos are indeed a major vector of Zika. (pbs.org)
  • Culex restuans is considered a vector of St. Louis Encephalitis (SLE) and West Nile Virus (WNV). (megacatch.com)
  • Deepak-Kumar Purusothaman et al, CRISPR/Cas-9 mediated knock-in by homology dependent repair in the West Nile Virus vector Culex quinquefasciatus Say, Scientific Reports (2021). (phys.org)
  • Culex mosquitos (Culex quinquefasciatus shown) are biological vectors that transmit West Nile Virus. (kdshives.com)
  • This year we identified an exotic species of mosquito, Culex tritaeniorhynchus , that can transmit Japanese encephalitis virus and was detected in Australia for the first time. (www.csiro.au)
  • She also tested the viral load in their salivary glands - an indication that the disease is being reproduced there and could transmit it through bites - and found the Culex mosquitos were reproducing it at an especially high level. (pbs.org)
  • The adult Culex quinquefasciatus mosquito is a medium-sized, brown mosquito. (utep.edu)
  • A cDNA coding for a protein with significant similarity to adenosine deaminase (ADA) was found while randomly sequencing a cDNA library constructed from salivary gland extracts of adult female Culex quinquefasciatus . (biologists.com)
  • It takes 2 weeks for the eggs to go through the different stages to become an adult Culex Mosquito. (getlostpest.com)
  • The first direct detection of WNV in Serbia was from Culex pipiens mosquito pool collected in Novi Sad in 2010 [6]. (thefreelibrary.com)
  • CO2 emitted in human breath is the main attractant for the Culex mosquito to find people, aiding the transmission of these deadly diseases. (thefreedictionary.com)
  • The Middleton Culex Mosquito can carry diseases such as yellow fever, malaria, dengue fever, encephalitis and West Nile virus. (getlostpest.com)
  • Culex "Culex" bus filariasis disease - viral diseases. (kenanaonline.com)
  • Both it and its close cousin, the Culex pipiens, are widespread throughout the U.S. and both can spread other diseases, such as West Nile virus and Japanese encephalitis. (pbs.org)
  • Dr. Talley shared how the Culex mosquito, which is responsible for transmitting core equine diseases such as WNV, can populate in the most unsuspecting places. (acreagelife.com)
  • The RefSeq genome records for Culex quinquefasciatus were annotated by the NCBI Eukaryotic Genome Annotation Pipeline , an automated pipeline that annotates genes, transcripts and proteins on draft and finished genome assemblies. (nih.gov)
  • The study reported a highly divergent, near full-length picorna-like virus genome from Culex spp. (altmetric.com)
  • The super-locus Ester is one of the two genome areas in the mosquito Culex pipiens involved in Organophosphorus (OP) insecticide resistance. (symbiosisonlinepublishing.com)
  • aegypti with HDH in urban areas, Culex quinquefasciatus with LDH in suburbs, and Ae. (nih.gov)
  • These reference viral genomes will facilitate the identification of related viruses in other insect species and to monitor changes in the virome of Culex mosquito populations to define factors influencing their transmission and possible impact on their insect hosts. (elsevier.com)
  • Nouvelle mention, pour le « Midi » méditerranéen, de populations naturelles anautogènes et sténogames de Culex pipiens pipiens L. (parasite-journal.org)
  • This study was conducted in order to address the following points: what is the resistance status in Tunisia populations of the Culex pipiens with regard to Chlorpyrifos insecticides and which resistance genes are involved? (symbiosisonlinepublishing.com)
  • And a third piece of the puzzle came from Ayres and a researcher from Canada's Brock University, Fiona Hunter , who respectively said they'd found wild populations of Culex in Brazil and the Dominican Republic carrying the Zika virus. (newsweek.com)
  • The most common species is Culex pipiens , which feeds on the blood of birds and attacks man primarily in southern regions. (thefreedictionary.com)
  • Culex is dangerous because it can carry West Nile virus, often transmitting it from birds to humans. (tucsonsentinel.com)
  • Culex prefers birds. (pbs.org)
  • Hepatozoon clamatae naturally infects the erythrocytes of green frogs ( Rana clamitans ), bullfrogs ( Rana catesbeiana ), and northern leopard frogs ( Rana pipiens ) in northeastern North America and uses the mosquito Culex territans as a definitive host. (allenpress.com)
  • CUTLINE: The culex mosquito involved in carrying the West Nile virus. (thefreedictionary.com)
  • The Culex Mosquito is the primary carrier of West Nile virus. (getlostpest.com)
  • The West Nile Virus carried by the Culex mosquito has a viral season every year in Kern County. (turnto23.com)
  • The months of July and August harbored perfect weather for the Culex to breed and spread West Nile, according to the press release. (dailyillini.com)
  • However until the virus is detected, we will focus our effort on applying larvacides and testing the culex population for the West Nile Virus. (malheurco.org)
  • The findings, which have yet to be peer reviewed or confirmed outside of a lab, found that mosquitos from the family of mosquitos known as Culex may not only be infected with Zika, but could also reproduce the virus in their salivary glands - a key step for passing the virus to humans. (pbs.org)
  • If further research confirms the early results detected in 12 Culex mosquitos, many countries could be forced to radically rethink their mosquito control campaigns. (pbs.org)
  • Aunque en general los mosquitos son molestos y a veces pueden ser peligrosos a la salud pública, la mayoría de los. (cornell.edu)
  • The nearly complete genomes of 56 viruses, including 32 novel genomes, some from potentially novel RNA and DNA viral families or genera, were assembled and phylogenetically analyzed, significantly expanding the known Culex-associated virome. (elsevier.com)
  • A third paper, published in Eurosurveillance , found that two species of Culex - C. pipiens and C. quinquefasciatus -collected from Tanzania and California could not carry the pathogen. (newsweek.com)
  • Its mode of action has not been elucidated, but a remarkable feature of this protein is the high toxicity against species from the Culex complex, besides its capacity to overcome Culex resistance to the Bin toxin, the major insecticidal factor in B. sphaericus-based larvicides. (bris.ac.uk)
  • L'utilisation de billes de polystyrène en tant que composante de la gestion intégrée des vecteurs avec d'autres mesures d'appui pourrait contribuer à la lutte contre les maladies transmises par des moustiques en République islamique d'Iran et dans les pays voisins. (who.int)