title: Apodemus agrarius as a new definitive host for Neodiplostomum seoulense.
abstract: A total of 1,496 rodents and insectivores were live-trapped at Yeoncheon-gun (n = 351), Paju-shi (804), and Pocheon-gun (343), Gyeonggi-do (Province), and examined for intestinal helminths, including Neodiplostomum seoulense, seasonally from December 2004 to September 2005. Six species of rodents, including Apodemus agrarius (1,366), Mus musculus (32), Micronytus fortis (28), Eothenomys regulus (9), Micronys minutus (6), and Cricetulus triton (3), and 1 species of insectivores Crocidura lasiura (54) were collected. A total of 321 adult N. seoulense were collected from 19 (1.4%) A. agrarius. The worm burden ranged from 1 to 101 per A. agrarius (mean; 16.9). No N. seoulense was observed in other rodent or insectivore species examined. The infection rate during autumn (4.5%) was higher than those during spring (0.8%), summer (0.8%), and winter (0.5%). The average number of N. seoulense in infected A. agrarius was the highest in spring (66.0 specimens), followed by autumn (15.2), winter (4.5), and summer (3.3). This study first confirms that A. agrarius is a natural definitive host for N. seoulense, and demonstrates that the infection rates and intensities vary seasonally and geographically.
authors.affiliation: Department 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. cjy@snu.ac.kr
authors.forename: Jong Yil
authors.initials: JY
authors.lastname: Chai
authors.forename: Jae Hwan
authors.initials: JH
authors.lastname: Park
authors.forename: Sang Mee
authors.initials: SM
authors.lastname: Guk
authors.forename: Jae Lip
authors.initials: JL
authors.lastname: Kim
authors.forename: Hyo Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Won Hee
authors.initials: WH
authors.lastname: Kim
authors.forename: Eun Hee
authors.initials: EH
authors.lastname: Shin
authors.forename: Terry A
authors.initials: TA
authors.lastname: Klein
authors.forename: Heung Chul
authors.initials: HC
authors.lastname: Kim
authors.forename: Sung Tae
authors.initials: ST
authors.lastname: Chong
authors.forename: Jin Won
authors.initials: JW
authors.lastname: Song
authors.forename: Luck Ju
authors.initials: LJ
authors.lastname: Baek
mesh_terms: D000818:Animals; D003411:Arvicolinae / Q000469:parasitology; D006224:Cricetinae; D003412:Cricetulus / Q000469:parasitology; D007312:Eulipotyphla / Q000469:parasitology; D005243:Feces / Q000469:parasitology; D005843:Geography; D007421:Intestine, Small / Q000469:parasitology; D007723:Korea / Q000453:epidemiology; D051379:Mice; D051189:Murinae / Q000469:parasitology*; D012376:Rodent Diseases / Q000453:epidemiology*; D012621:Seasons; D014200:Trematoda / Q000302:isolation & purification*; D014201:Trematode Infections / Q000453:epidemiology / Q000662:veterinary*