Encyclopedia of Parasitology

2016 Edition
| Editors: Heinz Mehlhorn


Reference work entry
DOI: https://doi.org/10.1007/978-3-662-43978-4_2227


Ventral sucker or Baer’s disc


Posterior holdfast organ of  Monogenea. Large hookless holdfast organ which characterizes the platyhelminthic group of  Aspidogastrea. In adult worms, it covers nearly the whole of the ventral side (Figs. 1, 2, and 3).
Opisthaptor, Fig. 1

Diagrammatic representation of types of opisthaptors (holdfast systems)

Opisthaptor, Fig. 2

Diagrammatic representation of different types of opisthaptors in Monogenea

Opisthaptor, Fig. 3

Scanning electron micrograph of a monogenean species attached by its opisthaptor at the skin of a fish

Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Institut für Zoomorphologie, Zellbiologie und ParasitologieHeinrich-Heine-UniversitätDüsseldorfGermany