Recovery of waterborne Cryptospridium parvum oocysts by freshwater benthic clams (Corbicula fluminea)

Article Abstract:

A study was conducted on Asian freshwater clams exposed to water contaminated with infectious Cryptosporidium parvum oocysts. No oocysts were detected in the water 24 hours after the contamination event. The percentage of oocyst-containing clams varied from 20 to 100%, depending on the type of tissue examined and the technique used. Positive samples were obtained when gills and gastrointestinal tracts were processed with immunofluorescent antibody. Clam-released oocysts were surrounded by feces, no free oocysts or oocysts dissociated from fecal matter were observed.

Water pollution, Clams

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Cryptosporidium sp. infections in green turtles, Chelonia mydas, as a potential source of marine waterborne oocysts in the Hawaiian Islands

Article Abstract:

A study on Cryptosporidium sp. infections in green turtles or Chelonia mydas was conducted to determine the sources of marine waterborne oocysts in the Hawaiian Islands. The study identified Cryptosporidium sp. oocysts in fecal and intestinal samples from the turtles. Results show that positive reactions were present and that the range of oocyst concentrations was similar to those reported from snakes.

Diseases, Natural history, Hawaii, Turtles

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