Related Experiment Video
Updated: Jul 6, 2026

Characterization of Calcification Events Using Live Optical and Electron Microscopy Techniques in a Marine Tubeworm
Published on: February 28, 2017
Phylogenetic relationships of the monozoic tapeworms (Eucestoda: Caryophyllidea) inferred from morphological
Mikulás Oros1, Vladimíra Hanzelová, Tomás Scholz
1Parasitological Institute, Slovak Academy of Sciences, Hlinkova 3, 040 01, Kosice, Slovakia.
Abstract:
Phylogenetic relationships of all genera of the order Caryophyllidea, possibly the earliest branching group of true tapeworms (Platyhelminthes: Eucestoda) and the only one that is monozoic, have been assessed for the first time. Results of this cladistic analysis, inferred from 30 unweighted morphological characters, are only partly congruent with the existing classification, which consists of four families based on the position of the inner longitudinal muscles in relation to the internal genital organs. Whereas all but five genera of the Caryophyllaeidae form a monophyletic clade, members of the Capingentidae are split, occurring within six unrelated groups. The Lytocestidae is also paraphyletic, as some genera appear in four unrelated clades. Archigetes appears in a derived clade, indicating that its direct (monoxenous) life-cycle involving only tubificid oligochaetes is secondarily derived and not plesiomorphic among the Eucestoda, as postulated by some authors.
More Related Videos
Related Concept Videos
Diversity of Protists I
Phylogenetic Trees
Phylogenetic Trees
Phylogeny
Microbial Phylogeny
The Tree of Life - Bacteria, Archaea, Eukaryotes

