Effects of host age on infection of ICR mice with Echinostoma caproni or E. trivolvis.
There was no significant difference in the number of E. caproni recovered 21 days post-infection from 1-, 2-, 4-, 5-, 6-, 7-, 12-, or 21-month-old ICR mice infected with 25 metacercarial cysts. A range of 10.8-17.3 worms was recovered from mice in the age groups. In a similar experiment with E. trivolvis, there was no significant difference in worms recovered in young vs old mice. A range of 0-1.7 worms was recovered from mice in each age group. Contrary to a previous study on E. caproni in NMRI mice, our results indicate that host age does not affect establishment of E. caproni or E. trivolvis in the ICR mouse.
Hosier
D W
DW
Department of Biology, Moravian College, Bethlehem, PA 18018.
Ross
D
D
Fried
B
B
D000367:Age Factors; D000818:Animals; D004449:Echinostoma / Q000254:growth & development*; D004451:Echinostomiasis / Q000469:parasitology / Q000662:veterinary*; D005260:Female; D051379:Mice / Q000469:parasitology*; D012376:Rodent Diseases / Q000469:parasitology*