Are abnormalities of the attachment apparatus of diplozoids normal phenomenon?
|Year of publication||2003|
|Type||Article in Proceedings|
|Conference||Zoologické dny Brno 2003. Sborník abstraktů z konference|
|MU Faculty or unit|
|Keywords||parasite; Diplozoidae; abnormalities|
|Description||Members of the family Diplozoidae are ectoparasites living on the gills of cyprinid fish. During study of the important taxonomic traits we have randomly found abnormalities of the attachment clamps and central hooks of diplozoids. Other authors have refered the sporadic occurrences of diplozoids abnormalities and the presence of abnormalities was associated with environment pollution. We observed seven types of abnormalities of diplozoids. There were abnormality types noted by previous authors, but there were also new type of clamp abnormalities and rare abnormalities at central hooks detected. Abnormalities of clamps, which are developing in the later stage of the ontogenetic development, during parasitic life on the host, were the most frequent. More then 21% of the found parasites from five localities (River Vlára and Svratka) had abnormalities of attachment apparatus. So the abnormalities of diplozoids seems to be more frequent phenomenon than it was suggested.|