Da. Lysne et al., PEPSIN DIGESTION REVEALS BOTH PREVIOUS AND PRESENT INFECTIONS OF METACERCARIAE IN THE SKIN OF FISH, Fisheries research, 24(2), 1995, pp. 173-177
In the present study we first counted the pigmented spots that surroun
d Cryptocotyle spp. metacercariae in the skin of fish. Thereafter we d
igested the skin and counted the parasites. It was then possible both
to quantify the present infections and to estimate the number of metac
ercariae that had died recently.