This study examined survival and distribution of Echinostoma caproni in the small intestine of ICR mice at various times up to 36 hr following the death of the host. Adult worms were obtained at 2-wk postinfection of 21 ICR mice each infected with 50 metacercarial cysts. Mice were killed with light ether anesthetization and cervical dislocation and maintained at room temperature (22 ± 1 C) until examination at 0 (controls), 2, 4, 6, 12, 24, and 36 hr postmortem. Survival was based on worm activity and distribution was assessed on the basis of worm location in 1 of 5 equal intestinal segments numbered from the pylorus to the ileocecal valve. Worms were alive up to 36 hr postmortem and were distributed mainly in segments 3 and 4 at all times postmortem. Histochemical Oil Red O studies on whole control and experimental worms showed neutral lipids localized in the protonephridial tubules and the excretory bladder. Eggs from experimental worms at all times produced miracidia that infected Biomphlaria glabrata snails.
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April 2000
RESEARCH NOTES|
April 01 2000
Survival and Distribution of Echinostoma caproni in the Small Intestine of ICR Mice up to 36 Hours after the Death of the Host
J. Heim;
J. Heim
Department of Biology, Lafayette College, Easton, Pennsylvania 18042
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M. Rossi;
M. Rossi
Department of Biology, Lafayette College, Easton, Pennsylvania 18042
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B. Fried
B. Fried
Department of Biology, Lafayette College, Easton, Pennsylvania 18042
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J Parasitol (2000) 86 (2): 415–416.
Citation
J. Heim, M. Rossi, B. Fried; Survival and Distribution of Echinostoma caproni in the Small Intestine of ICR Mice up to 36 Hours after the Death of the Host. J Parasitol 1 April 2000; 86 (2): 415–416. doi: https://doi.org/10.1645/0022-3395(2000)086[0415:SADOEC]2.0.CO;2
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