title: Nesting bird "host funnel" increases mosquito-bird contact rate.
abstract: Increases in vector-host contact rates can enhance arbovirus transmission intensity. We investigated weekly fluctuations in contact rates between mosquitoes and nesting birds using the recently described Nest Mosquito Trap (NMT). The number of mosquitoes per nestling increased from < 1 mosquito per trap night to 36.2 in the final 2 wk of the nesting season. Our evidence suggests the coincidence of the end of the avian nesting season and increasing mosquito abundances may have caused a "host funnel," concentrating host-seeking mosquitoes to the few remaining nestlings. The relative abundance of mosquitoes collected by the NMT suggests that significantly more Aedes albopictus (Skuse) and Culex pipiens (L.) /restuans (Theobald) sought nesting bird bloodmeals than were predicted by their relative abundances in CO2-baited Centers for Disease Control and Prevention light and gravid traps. Culex salinarius (Coquillett) and Culex erraticus Dyar and Knab were collected in NMTs in proportion to their relative abundances in the generic traps. Temporal host funnels and nesting bird host specificity may enhance arbovirus amplification and explain observed West Nile virus and St. Louis encephalitis virus amplification periods.
authors.affiliation: Department of Biology, Virginia Commonwealth University, 1000 W. Cary St., Richmond, VA 23284-2012, USA. kacaillouet@vcu.edu
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Caillouët
authors.forename: Anna E
authors.initials: AE
authors.lastname: Riggan
authors.forename: Lesley P
authors.initials: LP
authors.lastname: Bulluck
authors.forename: John C
authors.initials: JC
authors.lastname: Carlson
authors.forename: Roy T
authors.initials: RT
authors.lastname: Sabo
mesh_terms: D000330:Aedes / Q000502:physiology*; D000818:Animals; D003465:Culex / Q000502:physiology*; D004674:Encephalitis, St. Louis / Q000635:transmission; D005247:Feeding Behavior; D020387:Food Chain; D007299:Insect Bites and Stings / Q000662:veterinary*; D007303:Insect Vectors / Q000502:physiology*; D009425:Nesting Behavior; D011157:Population Dynamics; D012621:Seasons; D020308:Songbirds / Q000254:growth & development / Q000502:physiology*; D013045:Species Specificity; D013997:Time Factors; D014768:Virginia; D014901:West Nile Fever / Q000635:transmission
references.citation: J Med Entomol. 2005 Mar;42(2):134-41
references.pmid: 15799522
references.citation: Am J Trop Med Hyg. 2009 Feb;80(2):268-78
references.pmid: 19190226
references.citation: PLoS One. 2011;6(8):e23767
references.pmid: 21886821
references.citation: PLoS Biol. 2006 Apr;4(4):e82
references.pmid: 16494532
references.citation: Proc Biol Sci. 2004 Mar 7;271(1538):501-7
references.pmid: 15129960
references.citation: Biol Lett. 2012 Aug 23;8(4):567-9
references.pmid: 22399787
references.citation: Vector Borne Zoonotic Dis. 2008 Spring;8(1):57-67
references.pmid: 18237262
references.citation: Vector Borne Zoonotic Dis. 2001 Winter;1(4):299-315
references.pmid: 12653129
references.citation: Emerg Infect Dis. 2002 Jun;8(6):575-80
references.pmid: 12023912
references.citation: Vector Borne Zoonotic Dis. 2007 Fall;7(3):437-43
references.pmid: 17767414
references.citation: Vector Borne Zoonotic Dis. 2004 Spring;4(1):71-82
references.pmid: 15018775
references.citation: Annu Rev Entomol. 2001;46:111-38
references.pmid: 11112165
references.citation: J Vector Ecol. 2012 Jun;37(1):210-5
references.pmid: 22548555
references.citation: Vector Borne Zoonotic Dis. 2009 Feb;9(1):13-8
references.pmid: 18759639
references.citation: J Med Entomol. 1999 Sep;36(5):614-24
references.pmid: 10534957
references.citation: J Med Entomol. 2002 Sep;39(5):777-85
references.pmid: 12349862
references.citation: Trans R Soc Trop Med Hyg. 2007 May;101(5):469-83
references.pmid: 17270228
references.citation: J Med Entomol. 2009 Mar;46(2):380-90
references.pmid: 19351092
references.citation: J Med Entomol. 1974 Mar 28;11(1):95-104
references.pmid: 4828351
references.citation: J Med Entomol. 2004 Sep;41(5):965-72
references.pmid: 15535629
references.citation: Science. 1968 Jul 5;161(3836):67-8
references.pmid: 5659128
references.citation: J Med Entomol. 2011 Nov;48(6):1210-3
references.pmid: 22238881
references.citation: Proc Biol Sci. 2006 Sep 22;273(1599):2327-33
references.pmid: 16928635
references.citation: J Med Entomol. 2011 Nov;48(6):1189-96
references.pmid: 22238878