scholarly journals Aquatic microfauna alter larval food resources and affect development and biomass of West Nile and Saint Louis encephalitis vector Culex nigripalpus (Diptera: Culicidae)

2017 ◽  
Vol 7 (10) ◽  
pp. 3507-3519 ◽  
Author(s):  
Dagne Duguma ◽  
Michael G. Kaufman ◽  
Arthur B. Simas Domingos
Keyword(s):  
Food Resources ◽  
Larval Food ◽  
West Nile ◽  
Saint Louis ◽  
Culex Nigripalpus ◽  
Saint Louis Encephalitis

scholarly journals Microbiota variations in Culex nigripalpus disease vector mosquito of West Nile virus and Saint Louis Encephalitis from different geographic origins

PeerJ ◽  
2019 ◽  
Vol 6 ◽  
pp. e6168 ◽  
Author(s):  
Dagne Duguma ◽  
Michael W. Hall ◽  
Chelsea T. Smartt ◽  
Mustapha Debboun ◽  
Josh D. Neufeld
Keyword(s):  
Microbial Communities ◽  
Disease Transmission ◽  
High Throughput Sequencing ◽  
Microbial Community Composition ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
West Nile ◽  
Saint Louis ◽  
Culex Nigripalpus ◽  
Saint Louis Encephalitis

Although mosquito microbiota are known to influence reproduction, nutrition, disease transmission, and pesticide resistance, the relationship between host-associated microbial community composition and geographical location is poorly understood. To begin addressing this knowledge gap, we characterized microbiota associated with adult females of Culex nigripalpus mosquito vectors of Saint Louis Encephalitis and West Nile viruses sampled from three locations in Florida (Vero Beach, Palmetto Inland, and Palmetto Coast). High-throughput sequencing of PCR-amplified 16S rRNA genes demonstrated significant differences among microbial communities of mosquitoes sampled from the three locations. Mosquitoes from Vero Beach (east coast Florida) were dominated by uncultivated Asaia sp. (Alphaproteobacteria), whereas microbiota associated with mosquitoes collected from two mosquito populations at Palmetto (west coast Florida) sites were dominated by uncultured Spironema culicis (Spirochaetes), Salinisphaera hydrothermalis (Gammaproteobacteria), Spiroplasma (Mollicutes), uncultured Enterobacteriaceae, Candidatus Megaira (Alphaproteobacteria; Rickettsiae), and Zymobacter (Gammaproteobacteria). The variation in taxonomic profiles of Cx. nigripalpus gut microbial communities, especially with respect to dominating taxa, is a potentially critical factor in understanding disease transmission and mosquito susceptibility to insecticides among different mosquito populations.

Serological survey for Saint Louis encephalitis virus and West Nile virus in domestic mammals in Córdoba, Argentina: are our pets potential sentinels?

2020 ◽  
Vol 165 (9) ◽  
pp. 2079-2082
Author(s):  
Luisina Currenti ◽  
Paula Tasca ◽  
María del Pilar Díaz ◽  
Marta Contigiani ◽  
Lorena Spinsanti
Keyword(s):  
West Nile Virus ◽  
Encephalitis Virus ◽  
Serological Survey ◽  
West Nile ◽  
Saint Louis ◽  
Saint Louis Encephalitis

scholarly journals Autochthonous circulation of Saint Louis encephalitis and West Nile viruses in the Province of La Rioja, Argentina

2020 ◽  
Author(s):  
Gonzalo P. Batallán ◽  
Brenda S. Konigheim ◽  
Agustín I. Quaglia ◽  
María E. Rivarola ◽  
Mauricio D. Beranek ◽  
...  
Keyword(s):  
West Nile ◽  
Saint Louis ◽  
La Rioja ◽  
Saint Louis Encephalitis

scholarly journals Effects of Organic Amendments on Microbiota Associated with the Culex nigripalpus Mosquito Vector of the Saint Louis Encephalitis and West Nile Viruses

mSphere ◽  
2017 ◽  
Vol 2 (1) ◽  
Author(s):  
Dagne Duguma ◽  
Michael W. Hall ◽  
Chelsea T. Smartt ◽  
Josh D. Neufeld
Keyword(s):  
Microbial Communities ◽  
Potential Role ◽  
Mosquito Control ◽  
Control Strategies ◽  
Mosquito Vector ◽  
West Nile ◽  
Content Type ◽  
Saint Louis ◽  
Culex Nigripalpus ◽  
Bacterial Microbiota

ABSTRACT Mosquito microbiota provide important physiological and ecological attributes to mosquitoes, including an impact on their susceptibility to pathogens, fitness, and sensitivity to mosquito control agents. Culex nigripalpus mosquito populations transmit various pathogens, including the Saint Louis and West Nile viruses, and proliferate in nutrient-rich environments, such as in wastewater treatment wetlands. Our study examined whether increases in nutrients within larval mosquito developmental habitats impact microbial communities associated with C. nigripalpus mosquitoes. We characterized the effects of organic enrichments on microbiomes associated with C. nigripalpus mosquitoes and identified potential bacterial microbiota that will be further investigated for whether they alter mosquito life history traits and for their potential role in the development of microbial-based control strategies. Pollution from nutrients in aquatic habitats has been linked to increases in disease vectors, including mosquitoes and other pestiferous insects. One possibility is that changes in mosquito microbiomes are impacted by nutrient enrichments and that these changes affect various traits, including larval development, susceptibility to larval control agents, and susceptibility of the adult mosquitoes to pathogens. We tested this hypothesis using field mesocosms supplemented with low- and high-organic-nutrient regimens and then sampled microbial communities associated with the naturally colonizing Culex nigripalpus mosquito vector. By high-throughput sequencing of 16S rRNA gene sequences, we found no significant differences in overall microbial communities associated with sampled mosquitoes, despite detecting discernible differences in environmental variables, including pH, dissolved oxygen, and nutrient amendments. Nevertheless, indicator species analysis revealed that members of the Clostridiales were significantly associated with mosquitoes that originated from high-nutrient enrichments. In contrast, members of the Burkholderiales were associated with mosquitoes from the low-nutrient enrichment. High bacterial variability associated with the life stages of the C. nigripalpus was largely unaffected by levels of nutrient enrichments that impacted larval microbial resources, including bacteria, ciliates, and flagellates in the larval environments. IMPORTANCE Mosquito microbiota provide important physiological and ecological attributes to mosquitoes, including an impact on their susceptibility to pathogens, fitness, and sensitivity to mosquito control agents. Culex nigripalpus mosquito populations transmit various pathogens, including the Saint Louis and West Nile viruses, and proliferate in nutrient-rich environments, such as in wastewater treatment wetlands. Our study examined whether increases in nutrients within larval mosquito developmental habitats impact microbial communities associated with C. nigripalpus mosquitoes. We characterized the effects of organic enrichments on microbiomes associated with C. nigripalpus mosquitoes and identified potential bacterial microbiota that will be further investigated for whether they alter mosquito life history traits and for their potential role in the development of microbial-based control strategies.

scholarly journals Correction to: Serologic evidence of West Nile virus and Saint Louis encephalitis virus in horses from Southern Brazil

2021 ◽  
Author(s):  
Matheus N. Weber ◽  
Ana C. S. Mosena ◽  
Letícia F. Baumbach ◽  
Mariana S. da Silva ◽  
Raíssa Canova ◽  
...  
Keyword(s):  
West Nile Virus ◽  
Encephalitis Virus ◽  
Southern Brazil ◽  
West Nile ◽  
Saint Louis ◽  
Serologic Evidence ◽  
Saint Louis Encephalitis

scholarly journals Metagenomics of Mosquito-borne Flaviviruses in Various Geoclimatic Districts of Punjab, Pakistan

2020 ◽  
Vol 40 (04) ◽  
pp. 407-412
Author(s):  
Kashaf Yaseen
Keyword(s):  
Infectious Diseases ◽  
Japanese Encephalitis ◽  
Mosquito Species ◽  
Control Measures ◽  
Rt Pcr ◽  
West Nile ◽  
Saint Louis ◽  
Highly Active ◽  
Major Species ◽  
Saint Louis Encephalitis

Mosquitoes are highly active vectors capable of transmitting various pathogenic and infectious diseases to humans and animals. The present study was designed to identify the major species of mosquitoes and mosquito-borne flaviviruses (Saint Louis Encephalitis, West Nile and Dengue Viruses) prevalent in three districts of Punjab representing the three agro-geoclimatic zones viz; Multan, Chakwal and Jhang. The collected mosquitoes were stereoscopically identified to confirm the species and sex of the mosquitoes. Stereoscopic identification confirmed that female mosquitoes were 4334 out of 10675 (40.6%), 2242 out of 7296 (30%) and 2040 out of 6450 (31.6%) from districts Chakwal, Jhang and Multan, respectively. It was concluded that Culex species were present in abundance (73.2%) as compared to Aedes species (26.7%) in the selected study districts. The results of multiplex RT-PCR depicted that Dengue, West Nile, Japanese encephalitis and Saint Louis encephalitis viruses were prevalent in the mosquitoes of all three selected districts. However, the prevalence of mosquito-borne viruses insignificantly varied (P>0.05) among the three districts. This study has provided a better understanding of the prevailing mosquito species and mosquito-borne viruses in the study districts that can help to devise appropriate control measures

scholarly journals Detection of antibodies to West Nile and Saint Louis encephalitis viruses in horses

2004 ◽  
Vol 46 (5) ◽  
Author(s):  
Nicole L Marlenee ◽  
María A Loroño-Pino ◽  
Barry J Beaty ◽  
Bradley J Blitvich ◽  
Ildefonso Fernández Salas ◽  
...  
Keyword(s):  
West Nile ◽  
Saint Louis ◽  
Saint Louis Encephalitis

scholarly journals Emergent arboviruses in Brazil

2007 ◽  
Vol 40 (2) ◽  
pp. 224-229 ◽  
Author(s):  
Luiz Tadeu Moraes Figueiredo
Keyword(s):  
Aedes Aegypti ◽  
Tropical Forests ◽  
Yellow Fever ◽  
Venezuelan Equine Encephalitis ◽  
Natural Ecosystems ◽  
West Nile ◽  
Tropical Country ◽  
Eastern Equine Encephalitis ◽  
Saint Louis ◽  
Saint Louis Encephalitis

Brazil is a large tropical country (8,514,215km²) with 185,360,000 inhabitants. More than one third of its territory is covered by tropical forests or other natural ecosystems. These provide ideal conditions for the existence of many arboviruses, which are maintained in a large variety of zoonotic cycles. The risk that new arboviruses might emerge in Brazil is related to the existence of large, densely populated cities that are infested by mosquitoes such as Culex and the highly anthropophilic Aedes aegypti. Infected humans or animals may come into these cities from ecological-epidemiological settings where arbovirus zoonoses occur. This study analyzes the risk of emergence of the alphaviruses Mayaro, Venezuelan equine encephalitis, Eastern equine encephalitis and Chikungunya; the flaviviruses yellow fever, Rocio, Saint Louis encephalitis and West Nile; and the orthobunyavirus Oropouche.

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