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Am J Trop Med Hyg. 2010 Aug;83(2):285-91. doi: 10.4269/ajtmh.2010.10-0077.

Development of a multiplexed polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay to identify common members of the Subgenera Culex (Culex) and Culex (Phenacomyia) in Guatemala.

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1
Centers for Disease Control and Prevention, Division of Vector-borne Disease, Arbovirus Diseases Branch, Fort Collins, CO, USA. fxk7@cdc.gov

Abstract

Morphological differentiation of mosquitoes in the subgenera Culex (Culex) and Culex (Phenacomyia) in Guatemala is difficult, with reliable identification ensured only through examination of larval skins from individually reared specimens and associated male genitalia. We developed a multiplexed polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay to identify common Cx. (Cux.) and Cx. (Phc.). Culex (Cux.) chidesteri, Cx. (Cux.) coronator, Cx. (Cux.) interrogator, Cx. (Cux.) quinquefasciatus, Cx. (Cux.) nigripalpus/Cx. (Cux.) thriambus, and Cx. (Phc.) lactator were identified directly with a multiplexed primer cocktail comprising a conserved forward primer and specific reverse primers targeting ribosomal DNA (rDNA). Culex nigripalpus and Cx. thriambus were differentiated by restriction digest of homologous amplicons. The assay was developed and optimized using well-characterized specimens from Guatemala and the United States and field tested with unknown material from Guatemala. This assay will be a valuable tool for mosquito identification in entomological and arbovirus ecology studies in Guatemala.

PMID:
20682869
PMCID:
PMC2911172
DOI:
10.4269/ajtmh.2010.10-0077
[Indexed for MEDLINE]
Free PMC Article
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