The vector ecology of introduced Culex quinquefasciatus populations, and implications for future risk of West Nile virus emergence in the Galápagos archipelago

Medical and Veterinary Entomology
Gillian EastwoodSimon J Goodman

Abstract

Culex quinquefasciatus Say (Diptera: Culicidae), an important vector of West Nile virus (WNV) in the U.S.A., was first detected on the Galápagos Islands (Ecuador) in the 1980s. However, little is known of its ecology, distribution or capacity for arbovirus transmission in the Galápagos. We characterize details of lifecycle (including gonotrophic period), temporal abundance, spatial distribution, vector competence and host-feeding behaviour. Culex quinquefasciatus was detected on five islands of the Galápagos during 2006-2011. A period of 7-14 days was required for egg-adult emergence; water salinity above 5 ppt was demonstrated to hinder larval development. Blood-meal analysis indicated feeding on reptiles, birds and mammals. Assessment of WNV vector competency of Galápagos C. quinquefasciatus showed a median infectious dose of 7.41 log10 plaque-forming units per millilitre and evidence of vertical transmission (minimal filial infection rate of 3.7 per 1000 progeny). The distribution of C. quinquefasciatus across the archipelago could be limited by salt intolerance, and its abundance constrained by high temperatures. Feeding behaviour indicates potential to act as a bridge vector for transmission of pathogens across multiple ta...Continue Reading

References

Nov 1, 1986·The American Journal of Tropical Medicine and Hygiene·J K NayarJ W Knight
Mar 1, 1970·The American Journal of Tropical Medicine and Hygiene·C H TempelisW C Reeves
Oct 16, 2003·Comptes rendus biologies·Dean E Biggins, Jerry L Godbey
Feb 10, 2004·Journal of Medical Entomology·Laura B GoddardThomas W Scott
Mar 11, 2005·Emerging Infectious Diseases·A Marm KilpatrickPeter Daszak
Mar 3, 2006·Journal of Virological Methods·Anne F PayneLaura D Kramer
Aug 23, 2006·Conservation Biology : the Journal of the Society for Conservation Biology·A Marm KilpatrickAndrew A Cunningham
Sep 28, 2006·Conservation Biology : the Journal of the Society for Conservation Biology·Katherine F SmithKevin D Lafferty
Dec 1, 2006·Annals of the New York Academy of Sciences·Jean-Charles Maillard, Jean-Paul Gonzalez
Jul 25, 2007·Annual Review of Entomology·Laura D KramerGregory D Ebel
Oct 19, 2007·PLoS Pathogens·Linda M StyerKristen A Bernard
Feb 22, 2008·Nature·Kate E JonesPeter Daszak
Jun 9, 2009·Proceedings of the National Academy of Sciences of the United States of America·Arnaud BatailleSimon J Goodman
Aug 14, 2009·Proceedings. Biological Sciences·Arnaud BatailleSimon J Goodman
Jan 1, 2009·The Condor·Sarah S WheelerWilliam K Reisen
Sep 2, 2010·PloS One·Robert A RobinsonAndrew A Cunningham
Dec 2, 2010·The American Journal of Tropical Medicine and Hygiene·Goudarz MolaeiTheodore G Andreadis
Jun 15, 2011·Journal of Medical Entomology·Roberto BarreraNicholas Komar
Sep 8, 2011·The American Journal of Tropical Medicine and Hygiene·Gillian EastwoodAndrew A Cunningham
Oct 5, 2011·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Arnaud BatailleSimon J Goodman
Mar 21, 2012·The Open Orthopaedics Journal·M GriffinW Khan
Aug 28, 2012·Infection, Genetics and Evolution : Journal of Molecular Epidemiology and Evolutionary Genetics in Infectious Diseases·Arnaud BatailleSimon J Goodman
Feb 23, 2013·Journal of Medical Entomology·B J Johnson, M V K Sukhdeo
Mar 13, 2014·Journal of Medical Entomology·Alexander T CiotaLaura D Kramer
Nov 11, 2017·Journal of Vector Ecology : Journal of the Society for Vector Ecology·Samoa AsigauPatricia G Parker
Dec 1, 2005·Biological Conservation·Nicole L GottdenkerPatricia G Parker

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