[The survival of oocysts (sporocysts) of different species belonging to the genus Sarcocystis during the working of various chemical and physical factors]
1997
Katic-Radivojevic, S. (Veterinarski fakultet, Beograd (Yugoslavia). Katedra za parazitologiju) | Misic, Z. | Obrenovic, S. | Novakovic, Z.
Using in vitro excystation as a measure of viability, it was found that at 4 degrees oocysts and sporocysts survived considerably better in tap water (85 excystation after 175 days) than in either 2.5 potassium dichromate (15 after 175 days) or 2 sulphuric acid (0 excystation after 5 days). Although they were able to resist 48 h suspension at room temperature in most laboratory reagents and disinfectants tested, six (sulphuric acid, ammonia, mathanol, ethanol, potassium hydroxide, sodium hydroxide), hed substantial sporocystdal properties. Further investigation with three of these showed that sporocyst excystation was reduced from 60 to less than 10 following contact with 2.5 sulphuric acid for 1 h or with 2 ammonia. The duration of survival of desiccated sporocysts was inversely related to relative humidity and after 250 days at 33 relative humidity and temperature of 15 deg C or 24 deg C, 60 of such sporocysts excysted.
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