Abstract
We report here a previously unrecognized mosquito species from the Republic of South Korea that is closely related to Anopheles (Anopheles) sinensis. We also present an rDNA ITS2-based method for identification of this and the other morphologically similar Anopheles from the country. The PCR assay is a multiplex of seven primers in a single reaction that unambiguously identifies all included species. The other species include An. sinensis, An. lesteri, An. pullus, and a previously reported unknown Anopheles. Based on the ITS2 sequence, the two unnamed species have genetic distances from An. sinensis of 9.1% (unknown 1) and 10.7% (unknown 2), and are 10.6% different from each other. Adult females of An. sinensis and unknown 2 are morphologically indistinguishable, while unknown 1, An. lesteri and An. pullus can usually be separated from each other and from An. sinensis using available keys and descriptions. This PCR identification tool offers vector biologists and malaria epidemiologists a means to identify the potential vectors of malaria parasites in South Korea.References
Cornel, A.J., Porter, C.H. & Collins, F.H. (1996) Polymerase chain reaction species diagnostic assay for Anopheles quadrimaculatus cryptic species (Diptera: Culicidae) based on ribosomal DNA ITS2 sequences. Journal of Medical Entomology, 33, 109–116.
Harbach, R.E. (2004) The classification of genus Anopheles (Diptera: Culicidae): a working hypothesis of phylogenetic relationships. Bulletin of Entomological Research, 94, 537–553.
Lee, K.W. (1998) A revision of the illustrated taxonomic keys to genera and species of female mosquitoes of Korea (Diptera, Culicidae). 5th Medical Detachment, 168 Medical Battalion, 18th Medical Command, U.S. Army, 40 pp. (available at http://wrbu.si.edu)
Ma, Y., Qu, F., Xu, J. & Zheng, Z. (1998) Sequence differences of rDNA-ITS2 and species-diagnostic PCR assay of Anopheles sinensis and Anopheles anthropophagus from China. Journal of the Medical College People’s Liberation Army, 13, 123–128.
Rueda, L.M. (2005) Two new species of Anopheles (Anopheles) Hyrcanus Group (Diptera: Culicidae) from the Republic of South Korea. Zootaxa, 941, 1–26.
Swofford, D.L. (1998) PAUP*. Phylogenetic analysis using parsimony (*and other methods), Version 4. Sinauer Associates, Sunderland, Massachusetts.
Tanaka, K., Mizusawa, K. & Saugsted, E.S. (1979) A revision of the adult and larval mosquitoes of Japan (including the Ryukyu Archipelago and Ogasawara Islands) and Korea (Diptera: Culicidae). Contributions of the American Entomological Institute, 16, ii–vii, pp. 1–987.
Wilkerson, R.C., Parsons, T.J., Albright, T.A., Klein, T.A. & Braun, M.J. (1993) Random amplified polymorphic DNA (RAPD) markers readily distinguish cryptic mosquito species (Diptera: Culicidae: Anopheles). Insect Molecular Biology, 1, 205–211.
Wilkerson, R.C., Li, C., Rueda, L.M., Kim, H-C, Klein, T.A. Song, G-H & Strickman, D. (2003) Molecular confirmation of Anopheles (Anopheles) lesteri from the Republic of South Korea and its genetic identity with An. (Ano.) anthropophagus from China (Diptera: Culicidae). Zootaxa, 378, 1–14.