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. 2007 Jun;45(2):157-61.
doi: 10.3347/kjp.2007.45.2.157.

Apodemus agrarius as a new definitive host for Neodiplostomum seoulense

Jong Yil Chai  1 , Jae Hwan Park, Sang Mee Guk, Jae Lip Kim, Hyo Jin Kim, Won Hee Kim, Eun Hee Shin, Terry A Klein, Heung Chul Kim, Sung Tae Chong, Jin Won Song, Luck Ju Baek
Affiliations

Apodemus agrarius as a new definitive host for Neodiplostomum seoulense

Jong Yil Chai et al. Korean J Parasitol. 2007 Jun.

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.

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Figures

Fig. 1
Fig. 1
Seasonal changes in infection rates and mean worm burdens in A. agrarius. Spring = March (n = 255); Summer = June (495); Fall = September (247); and Winter = December (369).
Fig. 2
Fig. 2
Seasonal and geographical distribution of Apodemus agrarius infected with Neodiplostomum seoulense. Surveyed areas include Paju-shi, Yeoncheon-gun, and Pocheon-gun, Gyeonggi-do (Province). A: spring, B: summer, C: autumn, and D: winter. DMZ: demilitarized zone (heavy black line). Closed circle means 1 infected A. agrarius.
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