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The molecular and morphological variations of Culex pipiens complex (Diptera: Culicidae) in Iran
H Dehghan1, J Sadraei, S H Moosa-Kazemi
1Department of Medical Entomology and Vector Control, School of Public Health, Teheran University of Medical Sciences, Teheran, Iran.
Background & Objectives:
Taxonomic status of Culex pipiens is well-known as many years with such a wide variety of morphological and biological characteristics. These changes have been the subject of extensive investigation by many researchers. There are a little information about the morphology and molecular data of Cx. pipiens complex in Iran. The taxonomic status of the complex is very important because of medical and veterinary importance and wide distribution in the country.
Methods:
This study was carried out in 11 areas in Iran using dipping technique from April 2009 to October 2010. Molecular study was carried out using primers F1457 as forward and B1256 as reverse, which amplified Ace.2 gene and performed PCR-RFLP using ScaI restriction enzyme.
Results:
Culex quinquefasciatus found in south to central areas of Iran and reported as sympatric with Cx. pipiens in the central regions. Culex pipiens distributed in many areas of the country. Sequencing alignment of Ace.2 gene of Cx. quinquefasciatus and Cx. pipiens showed 6.5% variation in 46bp, especially in intron locus of gene. Culex pipiens complex from Iran are located in two separate clades with sister branches using phylogenetic sequencing tree.
Interpretation & Conclusion:
The male genitalia found as the most reliable diagnostic characters for identification of Cx. pipiens complex in Iran that confirmed by amplify the Ace.2 gene in the samples but we recommended the use of sequencing PCR products of microsatellite loci and COI gene in future study.
