The Incubation Period of the Eggs of Oncomelania Nosophora

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  • 406th Medical General Laboratory, APO 343, San Francisco, California


The incubation period of eggs of Oncomelania nosophora ranges from about 10 days to 35 days under seemingly uniform laboratory conditions. Maximum hatching occurred after 24–25 days at day time room temperatures of 20–25°C. in March–April, and at 18–19 days at 24–29°C. in May–June.