Dispersal ofCulexMosquitoes (Diptera: Culicidae) From a Wastewater Treatment Facility
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Journal Article Dispersal of Culex Mosquitoes (Diptera: Culicidae) From a Wastewater Treatment Facility Get access Alexander T. Ciota, Alexander T. Ciota 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, 5668 State Farm Road Slingerlands, NY 12159.2Department of Biological Sciences, State University of New York at Albany, Albany, NY 12144. Search for other works by this author on: Oxford Academic PubMed Google Scholar Cori L. Drummond, Cori L. Drummond 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, 5668 State Farm Road Slingerlands, NY 12159. Search for other works by this author on: Oxford Academic PubMed Google Scholar Meghan A. Ruby, Meghan A. Ruby 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, 5668 State Farm Road Slingerlands, NY 12159. Search for other works by this author on: Oxford Academic PubMed Google Scholar Jason Drobnack, Jason Drobnack 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, 5668 State Farm Road Slingerlands, NY 12159. Search for other works by this author on: Oxford Academic PubMed Google Scholar Gregory D. Ebel, Gregory D. Ebel 3Health Sciences Center, University of New Mexico, Albuquerque, NM, 87131-0001. Search for other works by this author on: Oxford Academic PubMed Google Scholar Laura D. Kramer Laura D. Kramer 5 1The Arbovirus Laboratories, Wadsworth Center, New York State Department of Health, 5668 State Farm Road Slingerlands, NY 12159.2Department of Biological Sciences, State University of New York at Albany, Albany, NY 12144.4Department of Biomedical Sciences, School of Public Health, State University of New York at Albany, NY 12144. 5Corresponding author, e-mail: ldk02@health.state.ny.us. Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Medical Entomology, Volume 49, Issue 1, 1 January 2012, Pages 35–42, https://doi.org/10.1603/ME11077 Published: 01 January 2012 Article history Received: 11 April 2011 Accepted: 13 September 2011 Published: 01 January 2012Keywords:
Culex quinquefasciatus
The present investigation is an attempt to study the biology of Culex quinquefasciatus under the Laboratory condition. The study on biology which includes life cycle, habitat preference, and their behavior help us to understand the role played by the vector mosquitoes in the transmission diseases like malaria, filarial, Dengue and Dengue hemorrhagic fever etc., A knowledge of the breeding, resting and biting, longevity of vector species is, therefore essential for organizing anti-vector measure.
Culex quinquefasciatus
Bionomics
Biting
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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 considered an animal and public health risk for the islands and controlled wherever possible.
West Nile virus
Culex quinquefasciatus
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Objective:To observe ultrastructures of the eggs,larvae,pupae and adults of Aedes albopictus,Culex quinquefasciatus,Anopheles sinensis and Culex barraudi.Method:The four species mosquitoes were collected in the breeding places,and the ultrastructures were observed under the scanning electron microscope(SEM).Results:Some features could be clearly differentiate among these mosquitoes especially comb scales in larval stages,scutellum in adults,siphon and surface morphology in pupae,and some surface mophologic structures in eggs.Conclusion:New morphological features of these four species are found under SEM,which can be used for taxonomic identification.
Aedes albopictus
Culex quinquefasciatus
Anopheles sinensis
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Background: Lymphatic Filariasis (LF), a mosquito born tropical parasitic disease, caused by Wuchereria bancrofti is not only a health but also a socio-economic problem in Bangladesh. Culex quinquefasciatus is the confirmed filarial vector in Bangladesh, so by controlling of this vector population, we can prevent this disease. To control this vector and decrease incidence of filariasis, we need to know studied mosquito’s sample in endemic areas.
Aim and objectives: Aim of this study was to see mosquito population in search of vector species in the endemic zones of malaria and filarial. Then we confirmed presence of vector species at molecular level by species specific DNA fingerprinting.
Methods: This cross-sectional entomological study was carried out in Hobiganj (Shatchori tea garden) and Moulvibazar district (Patrokhola and Madonmohonpur tea gardens). Mosquito was collected by paper cup with net, aspirator and torch light and vector mosquitoes were identified with stereoscopic microscope. After identification of the mosquitoes, these were stored in laboratory for analysis of the density of the vector mosquitoes in the endemic areas. Then the vector mosquitoes were identified through molecular method named Polymerase Chain Reaction (PCR).
Result: 1427 female mosquitoes belonging to 28 species under 5 genera were collected from three tea gardens. Culex quinquefasciatus which is the confirmed filarial vector in Bangladesh was found high in number (20.74%) out of the total collected mosquitoes. Other mosquito’s species were found in various ratios. Then Culex quinquefasciatus vector was identified by PCR.
Conclusion: As vector mosquitoes of LF are available in these tea gardens, the study concludes that these areas are highly LF endemic areas of Bangladesh. Through molecular method, the vector of LF can be identified certainly. As we identify the vector mosquito, thus we can prevent this LF disease at very early stage. So, these findings will be very beneficial and cost effective for a developing country like Bangladesh.
Culex quinquefasciatus
Lymphatic Filariasis
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Culex quinquefasciatus
Seasonality
Biting
Bancroftian filariasis
Wet season
Nuisance
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Population growth and urbanization have increased the potential habitats, and consequently the abundance of Culex quinquefasciatus, the southern house mosquito, a vector of West Nile Virus in urban areas. Water quality is critical in larval habitat distribution and in providing microbial food resources for larvae. A mesocosm experiment was designed to demonstrate which specific components of water chemistry are conducive to larval Culex mosquitoes. Dose-response relationships between larval development and NO3 , NH4 , and PO4 concentrations in stream water were developed through this experiment to describe the isolated effects of each nutrient on pre-adult development. The emergence pattern of Culex mosquitoes was found to be strongly related to certain nutrients, and results showed that breeding sites with higher PO4 or NO3 concentrations had higher larval survival rates. High NO3 concentrations favor the development of male mosquitoes and suppress the development of female mosquitoes, but those adult females that do emerge develop faster in containers with high NO3 levels compared to the reference group. The addition of PO4 in the absence of nitrogen sources to the larval habitat slowed larval development, however, it took fewer days for larvae to reach the pupal stage in containers with combinations of NO3 and PO4 or NH4 and PO4 nutrients. Results from this study may bolster efforts to control WNV in urban landscapes by exploring water quality conditions of Culex larval habitats that produce adult mosquitoes.
Culex quinquefasciatus
Mosquito control
Aedes albopictus
Mesocosm
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The occurrence of larvae of two potential vectors of West Nile virus, Culex nigripalpus and Culex quinquefasciatus, was examined in the Florida Keys. About half of the aquatic habitats examined contained larvae of either one or both of the species. Culex quinquefasciatus was the most frequently encountered species, whereas only 9% of habitats sampled contained Culex nigripalpus. Over half of those samples that contained Culex nigripalpus also contained Culex quinquefasciatus. The two species utilize similar larval habitats in the Florida Keys, Monroe County, Florida, USA.
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West Nile virus
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Background: West Nile virus (WNV) infection, is an arbovirus infection with high morbidity and mortality, the vector responsible for both human and animal transmission is Culex pipens complex.Objective: To determine the species distribution and seasonal abundance of Culex pipens and Culex quinquefasciatus mosquitoes in Abeokuta, Nigeria.Methods: Mosquitoes belonging to the Culex pipens complex were captured in three different locations located within Abeokuta Metropolis between March 2012 and January 2013. Individual species were identified using morphometric methods. Amplification of the Ace2 gene by PCR confirmed morphormetric identification of the mosquitoes.Results: A total of 751 mosquitoes were captured. Culex quinquefaciatus recorded the highest distribution of vectors with 56.6% and Culex pipens 43.4% (P > 0.05). Idi aba community recorded the highest distribution of mosquito vectors with 42.9% (n=322) and Culex quinqueaciatus was more abundantly distributed with 183 mosquitoes. Aro community recorded 32% (n=240) of captured mosquitoes with Culex quinquefaciatus having a higher level of abundance and lastly Kemta with a distribution of 25.1% (n=189).Conclusion: Results from this study show that potential vectors of WNV abound within Abeokuta, putting residents at high risk of West Nile infection. We advocate for introduction of routine testing of WNV in Abeokuta and Nigeria.Keywords: West Nile Virus, Culex pipens complex, PCR, Abeokuta
Culex quinquefasciatus
West Nile virus
Arbovirus Infections
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Culex quinquefasciatus
Biting
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