Concurrent infections of Echinostoma caproni and Echinostoma trivolvis in ICR mice.
ICR female mice, 6- to 8-weeks old, were exposed concurrently to 25 metacercarial cysts of Echinostoma caproni and 25 metacercarial cysts of Echinostoma trivolvis and necropsied 10 and 14 days post-infection. Controls consisted of mice exposed singly to either 25 or 50 E. caproni or E. trivolvis cysts. All 23 mice exposed to E. caproni cysts were infected with a total of 331 worms (37.8%), whereas only 11 (37.9%) of 29 mice exposed to E. trivolvis cysts were infected with a total of 77 (6.4%) worms. In the concurrent infections, 13 (59.1%) of 22 mice were infected with both species and the percentage of worm recovery was 72.6% for E. caproni and 14.2% for E. trivolvis. There was no difference in worm distribution of either species in single vs concurrent infections. In concurrent infections at 14 days PI, there was a significant decrease in the body area of worms of both species, when compared to single worm species.
Iorio
S L
SL
Department of Biology, Lafayette College, Easton, PA 18042.
Fried
B
B
Hosier
D W
DW
D000818:Animals; D004449:Echinostoma / Q000254:growth & development / Q000502:physiology*; D004451:Echinostomiasis / Q000469:parasitology*; D005260:Female; D051379:Mice; D008813:Mice, Inbred ICR