title: Genetic differentiation of strongyloides stercoralis from two different climate zones revealed by 18S ribosomal DNA sequence comparison.
abstract: Over 70 countries in tropical and subtropical zones are endemic areas for Strongyloides stercoralis, with a higher prevalence of the parasite often occurring in tropical regions compared to subtropical ones. In order to explore genetic variations of S. stercoralis form different climate zones, 18S ribosomal DNA of parasite specimens obtained from Thailand were sequenced and compared with those from Japan. The maximum likelihood indicates that S. stercoralis populations from these two different climate zones have genetically diverged. The genetic relationship between S. stercoralis populations is not related to the host species, but rather to moisture and temperature. These factors may directly drive genetic differentiation among isolated populations of S. stercoralis.
authors: Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand. wallop.pak@mahidol.ac.th
authors: Wallop
authors: W
authors: Pakdee
authors: Urusa
authors: U
authors: Thaenkham
authors: Paron
authors: P
authors: Dekumyoy
authors: Surapol
authors: S
authors: Sa-Nguankiat
authors: Wanna
authors: W
authors: Maipanich
authors: Somchit
authors: S
authors: Pubampen
mesh_terms: D000818:Animals; D005243:Feces / Q000469:parasitology; D014644:Genetic Variation; D006801:Humans; D007564:Japan; D012337:RNA, Ribosomal, 18S / Q000235:genetics* / Q000302:isolation & purification; D017171:Strongyloides stercoralis / Q000235:genetics* / Q000302:isolation & purification; D013322:Strongyloidiasis / Q000453:epidemiology / Q000469:parasitology*; D013785:Thailand; D014329:Tropical Climate
chemical_list: D012337:RNA, Ribosomal, 18S