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1.
Article in Chinese | WPRIM | ID: wpr-584370

ABSTRACT

Objective To investigate the ecological habit and characteristics of Trichobilharzia cercariae in the Huaihe river system. Methods During June of 2002-May of 2003, Radix auricularia snails were collected monthly in Yaohe Fishery of the branch of the Huaihe River. The cercariae, released from the positive snails and collected by Shade Drop Bottle, were examined by direct press. Ducklings were infected by cercariae with different ages and examined for the infection by miracidia hatching method.Results The results showed a typical seasonal fluctuation in infection rate of the snails, i.e. the cercariae detection rate was 0.81% in July, 0.65% in June, 0.07%-0.26% in April, May, August, September and October respectively, with a significant difference (? 2=26.73, P

2.
Article in Chinese | WPRIM | ID: wpr-556670

ABSTRACT

F0.01(1,5)=16. 30,P0. 05). Conclusion Laboratory results thus suggest that infection intensity is related to snail size per se, whereas prevalence in the field is related to snail size only through the correlation between size and age. In addition, under these experimental conditions, infected snails were no larger than uninfected snails, so the gigantism snails observed in the field might not be attributable to Trichobilharzia-induced effect.

3.
Article in Chinese | WPRIM | ID: wpr-588514

ABSTRACT

The life cycle of Trichobilharzia sp.can be completed in Radix auricularia and domestic or wild ducks,and people can contract cercarial dermatitis through water contact.Natural nidus of Trichobilharzia exists in Huainan area.

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