Molluscicidal activities of Tribromosalan, Cartap and Chlorothalonil were evaluated in the laboratory and the field against Oncomelania hupensis, the intermediate host of Schistosoma japonicum in China. The three chemicals were very effective against O. hupensis in the laboratory. The molluscicidal activities found in the field trials suggest that Tribromosalan and Cartap may be used as practic...

The ability of slugs (Deroceras reticulatum) to survive exposure to various chemical stressors such as molluscicides (carbamates, metaldehyde, iron-chelates) or other environmental pollutants (heavy metals, pesticides) was investigated using x-ray analyses, autoradiography, filter electron rnicroscopy, enzyme histochemistry, enzymatics, electron microscopy, and stress protein analyses. Uptake p...

Sodium pentachlorophanate (P.C.P. Na) is now considered as one of the most promising molluscicides. Field experiments with this compound against Oncomelania nosophora in Japan were reported by McMullen and others (1948; 1951), and Hunter and others (1952). Since 1955 this compound has been used for practical molluscicidal purpose in the major endemic areas of schistosomiasis in Japan. In China,...

Ten species of freshwater molluscs were found in a malacological survey in the Sirikit reservoir in 1985. Among these species, Tricula aperta or Neotricula aperta, intermediate host of human schistosomes, Bithynia (Digoniostoma) siamensis goniomphalos and B. (D.) funiculata, the first intermediate host of Opisthorchis viverrini were not found. It is revealed that most of the habitats in the Sir...

In view of the call by the World Health Organization (WHO) for elimination of schistosomiasis as a public health problem by 2025, use of molluscicides in snail control to supplement chemotherapy-based control efforts is likely to increase in the coming years. The mechanisms of action of niclosamide, the active ingredient in the most widely used molluscicides, remain largely unknown. A better un...