Korean J Parasitol.  2008 Dec;46(4):235-241. 10.3347/kjp.2008.46.4.235.

Sympatric Distribution of Three Human Taenia Tapeworms Collected between 1935 and 2005 in Korea

Affiliations
  • 1Department of Parasitology and Medical Research Institute, Chungbuk National University College of Medicine, Chongju, Chungbuk 361-763, Korea. kseom@chungbuk.ac.kr
  • 2Gyeongin Regional Food and Drug Administration, Incheon 402-835, Korea.
  • 3Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 110-799, Korea.
  • 4Department of Parasitology, College of Medicine, Ewha Womans University, Seoul 158-710, Korea.
  • 5Department of Parasitology, Korea University College of Medicine, Seoul 136-705, Korea.

Abstract

Taeniasis has been known as one of the prevalent parasitic infections in Korea. Until recently, Taenia saginata had long been considered a dominant, and widely distributed species but epidemiological profiles of human Taenia species in Korea still remain unclear. In order to better understand distribution patterns of human Taenia tapeworms in Korea, partial nucleotide sequences of mitochondrial cox1 and ITS2 (internal transcribed spacer 2) were determined, along with morphological examinations, on 68 Taenia specimens obtained from university museum collections deposited since 1935. Genomic DNA was extracted from formalin-preserved specimens. Phylogenetic relationships among the genotypes (cox1 haplotype) detected in this study were inferred using the neighbor-joining method as a tree building method. Morphological and genetic analyses identified 3 specimens as T. solium, 51 specimens as T. asiatica, and 14 specimens as T. saginata. Our results indicate that all 3 Taenia tapeworms are sympatrically distributed in Korea with T. asiatica dominating over T. saginata and T. solium.

Keyword

Taenia solium; T. saginata; T. asiatica; sympatric distribution; molecular identification
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