Nuclear rDNA ITS sequence variation in the trematode genus Echinostoma: An aid to establishing relationships within the 37-collar-spine group

Morgan, J. A. T. and Blair, D. (1995) Nuclear rDNA ITS sequence variation in the trematode genus Echinostoma: An aid to establishing relationships within the 37-collar-spine group. Parasitology, 111 5: 609-615.


Author Morgan, J. A. T.
Blair, D.
Title Nuclear rDNA ITS sequence variation in the trematode genus Echinostoma: An aid to establishing relationships within the 37-collar-spine group
Formatted title
Nuclear rDNA ITS sequence variation in the trematode genus Echinostoma: An aid to establishing relationships within the 37-collar-spine group
Journal name Parasitology   Check publisher's open access policy
ISSN 0031-1820
1469-8161
Publication date 1995-12-01
Sub-type Article (original research)
Volume 111
Issue 5
Start page 609
End page 615
Total pages 7
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Language eng
Formatted abstract
The taxonomic history of members of the 37-collar-spine group within the genus Echinostoma has been very confused. We obtained DNA sequence data from the nuclear rDNA ITS1, 5·8S and ITS2 of 7 nominal species belonging to this group, Echinostoma trivolvis (Cort, 1914), E. revolution (Frölich, 1802), E. caproni Richard, 1964, E. liei Jeyarasasingam et al. 1972, E. paraensei Lie & Basch, 1967, two African isolates, E. sp.I and E. sp.II, and of one 28-collar-spined echinostome, E. hortense (Asada, 1926). Five of the eight species were clearly distinguishable using ITS data. Sequences from the remaining three taxa, E. caproni, E. sp.II and E. liei were identical to one another and the group containing these taxa was distant from other 37-collar-spine species on a phylogenetic tree. E. trivolvis and E. paraensei form a second, but less distinct group within the 37-collar-spine group. The resolution obtained using DNA sequencing will assist in the current reclassification of the group. It also provides a model for future work on sibling species.
Keyword Internal transcribed spacer
Echinostoma
Nucleotide sequence
Phylogeny
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
 
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