Apodemus agrarius as a new definitive host for Neodiplostomum seoulense.
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.
Chai
Jong Yil
JY
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
Park
Jae Hwan
JH
Guk
Sang Mee
SM
Kim
Jae Lip
JL
Kim
Hyo Jin
HJ
Kim
Won Hee
WH
Shin
Eun Hee
EH
Klein
Terry A
TA
Kim
Heung Chul
HC
Chong
Sung Tae
ST
Song
Jin Won
JW
Baek
Luck Ju
LJ
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*