Effects of larval rearing temperature on immature development and West Nile virus vector competence of Culex tarsalis

BACKGROUND: Temperature is known to induce changes in mosquito physiology, development, ecology, and in some species, vector competence for arboviruses. Since colonized mosquitoes are reared under laboratory conditions that can be significantly different from their field counterparts, laboratory vec...

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Bibliographic Details
Published in:Parasites & vectors 2012-09, Vol.5 (1), p.199-199, Article 199
Main Authors: Dodson, Brittany L, Kramer, Laura D, Rasgon, Jason L
Format: Article
Language:English
Subjects:
Analysis
Animals
arboviruses
body size
Colonies & territories
Culex - growth & development
Culex - radiation effects
Culex - virology
Culex tarsalis
Development
Disease transmission
Disease Vectors
ecology
Encephalitis
Experiments
Female
Genetic aspects
Genetic vectors
Global climate change
Host-parasite relationships
Infection
Laboratories
Larva - growth & development
Larva - radiation effects
Larva - virology
larvae
Life sciences
Male
Mosquito
Mosquitoes
Physiological aspects
pupation
rearing
Temperature
Transmission
vector competence
West Nile fever
West Nile Fever - transmission
West Nile virus
West Nile virus - isolation & purification
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Summary:BACKGROUND: Temperature is known to induce changes in mosquito physiology, development, ecology, and in some species, vector competence for arboviruses. Since colonized mosquitoes are reared under laboratory conditions that can be significantly different from their field counterparts, laboratory vector competence experiments may not accurately reflect natural vector-virus interactions. METHODS: We evaluated the effects of larval rearing temperature on immature development parameters and vector competence of two Culex tarsalis strains for West Nile virus (WNV). RESULTS: Rearing temperature had a significant effect on mosquito developmental parameters, including shorter time to pupation and emergence and smaller female body size as temperature increased. However, infection, dissemination, and transmission rates for WNV at 5, 7, and 14 days post infectious feeding were not consistently affected. CONCLUSIONS: These results suggest that varying constant larval rearing temperature does not significantly affect laboratory estimates of vector competence for WNV in Culex tarsalis mosquitoes.
ISSN:1756-3305
1756-3305
DOI:10.1186/1756-3305-5-199