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  • Title: Effects of trematode infection on metabolism and activity in a freshwater snail, Semisulcospira libertina.
    Author: Shinagawa K, Urabe M, Nagoshi M.
    Journal: Dis Aquat Organ; 2001 Jun 20; 45(2):141-4. PubMed ID: 11463101.
    Abstract:
    Changes in the metabolism and activity of the freshwater snail Semisulcospira libertina infected with larval trematodes were studied experimentally. In snails up to 11 mm in shell width, crawling distance, feeding frequency, and the proportion of individuals located on vertical walls did not differ among snails infected with mature or immature cercariae, or uninfected snails (p > 0.05). In snails larger than 11 mm, individuals infected with mature cercariae tended to feed more frequently during the light period (p = 0.0081), but the distance they crawled and the proportion of individuals located on vertical walls did not differ, regardless of infection (p > 0.05). Infection with mature cercariae significantly increased the oxygen consumption rate (p = 0.016), which was measured only in the large size.
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