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  • Title: Terminology of the sucker-like organs of the scolex of trypanorhynch cestodes.
    Author: Jones MK, Beveridge I, Campbell RA, Palm HW.
    Journal: Syst Parasitol; 2004 Oct; 59(2):121-6. PubMed ID: 15477752.
    Abstract:
    The literature associated with descriptions and definitions of the sucker-like attachment organs in trypanorhynchs, termed either bothria or bothridia, is reviewed. There are descriptions of 14 trypanorhynch species representing 10 families. In none of these trypanorhynchs was a membrane separating the attachment organ from the scolex parenchyma described, one of the definitions used to distinguish bothria from bothridia. Transmission electron microscopy of the bothria of the trypanorhynch species Nybelinia queenslandensis Beveridge & Jones, 1998 (Tentaculariidae) and Otobothrium mugilis Hiscock, 1954 (Otobothriidae) also failed to show any membranous structure separating the surface of the attachment organ from the cestode parenchyma. The sucker-like attachment organs of trypanorhynchan cestodes appear, therefore, to be bothria rather than bothridia. As a result, changes in the terminology of related features of the scolex are proposed here. Henceforth, the pars bothridialis should be referred to as the pars bothrialis and the bothridial pits should be referred to bothrial pits.
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