Preliminary cladistic analysis of genera of the cestode order Trypanorhyncha Diesing, 1863.

Beveridge, I., Campbell, R. A. and Palm, H. W. (1999) Preliminary cladistic analysis of genera of the cestode order Trypanorhyncha Diesing, 1863. Systematic Parasitology, 42 . pp. 29-49. DOI 10.1023/A:1006011512221.

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Abstract

A preliminary cladistic analysis was carried out on the 49 currently recognised genera of the order Trypanorhyncha.
Forty-four characters were analysed; a functional outgroup was used for scolex and strobilar characters, while
Nybelinia was utilised to polarise characters related to the rhyncheal system. Eight well-resolved clades were
evident in the resultant cladogram, which is compared with existing phenetic classifications. An analysis of families
resulted in a similar clustering of taxa to that observed in the case of the genera. The results suggest that
two key characters used in existing classifications, namely the presence of sensory fossettes on the bothridia and
the development of atypical heteroacanth and poeciloacanth armatures from typical heteroacanth armatures, have
occurred on several occasions. Some clades provide support for the arrangements used in current classifications.
Suggestions are made for future avenues of research which might provide more robust phylogenetic data for the
Trypanorhyncha.

Document Type: Article
Keywords: Trypanorhyncha
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1023/A:1006011512221
ISSN: 0165-5752
Date Deposited: 18 Feb 2008 17:24
Last Modified: 17 Jun 2016 09:35
URI: http://oceanrep.geomar.de/id/eprint/752

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