LÄÄNE-EESTI VETE LESTA
winter (Fagerholm, 1982)
C. osculatum and R. acus larvae are also often recorder in flounder, usually in liver and
mesentery. C. osculatum is a common parasite of seals and fish serve either as second
intermediate host or paratenic host. R. acus adults has been found in numerous species,
but it is not quite clear whether these fish serve actually as definitive host in which the
female parasite attains gravidity or only as paradefinitive fish in which the nematodes
may become mature but are unable to produce eggs. Under European conditions, the
principal definitive hosts of R. acus are pike and trout (Moravec, 1994).
Some parasites found in flounder have a detrimental effect on the host. Species such as
D. spathaceum (the second most abundant parasite found) and P. laevis are well known
pathogens of flounder and other fish. D. spathaceum matacercariae infect the lens of
annaabi.ee 
