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Molluscicidal effect of film on ditches in mountainous schistosomiasis endemic regions
Ist Teil von
Zhongguo xue xi chong bing fang zhi za zhi, 2011-04, Vol.23 (2), p.128
Ort / Verlag
China
Erscheinungsjahr
2011
Quelle
MEDLINE
Beschreibungen/Notizen
To evaluate the molluscicidal effect of film on ditches in mountainous schistosomiasis endemic regions.
A ditch with Oncomelania hupensis snails was selected as experimental field. The ditch was divided into 3 parts (groups): a niclosamide plus film covering group (film covering after spraying by wettable powder of 50% niclosamide ethanolamine salt upon 2 g/m2), a film covering group (film covering directly without niclosamide spraying), and a control group (no molluscicidal measures). The snail investigation was performed 7, 10, 40, 60 d and 90 d after film covering. The temperatures outside and inside film were determined twice a day during the experiment.
The temperature inside the film was significantly higher than that outside the film (t = 4.12, P < 0.01). Compared with the densities of living snails before the experiment, the densities of living snails decreased by 99. 01% and 67.71% seven days post-film in the niclosamide plus film covering group and film covering group respectively; 96.58% and 93.06%