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Ex Uno Plures? Morphotype and Lineage Diversity of Bothriocephalus (Cestoda: Bothriocephalidea) in North American Freshwater Fishes.
- Source :
-
The Journal of parasitology [J Parasitol] 2020 Oct 01; Vol. 106 (5), pp. 589-602. - Publication Year :
- 2020
-
Abstract
- Morphological and molecular evaluation of tapeworms of the genus Bothriocephalus Rudolphi, 1808 (Cestoda: Bothriocephalidea), based on newly collected and uniformly fixed worms from freshwater fishes in Canada and the United States has revealed unexpected diversity. With a combination of selected morphological features and 4 molecular markers (18S rDNA V8 region, ITS1, ITS2, and COI gene sequences), the following morphotypes and lineages of the Bothriocephalus cuspidatus Cooper, 1917 complex were identified, several of which are specific to their respective fish definitive hosts and may represent separate species: B. cuspidatus sensu stricto from walleye, Sander vitreus (type host), which likely includes a miniature morphotype from Johnny darter, Etheostoma nigrum (both Percidae); Bothriocephalus morphotype from pumpkinseed, Lepomis gibbosus (Centrarchidae); and Bothriocephalus morphotype from rock bass, Ambloplites rupestris (Centrarchidae). The Bothriocephalus morphotype from goldeye, Hiodon alosoides (Hiodontidae), may also represent a separate lineage (possibly Bothriocephalus texomensisSelf, 1954) but requires additional studies. A morphotype from smallmouth bass, Micropterus dolomieu, based on a single specimen, is morphologically and genetically very similar to the morphotype from rock bass. Morphological study of the scolex and strobila of heat-killed and fixed specimens has revealed consistent differences, often subtle, that allowed us to differentiate between these morphotypes.<br /> (© American Society of Parasitologists 2020.)
- Subjects :
- Animals
Base Sequence
Canada
Cestoda genetics
Cestoda ultrastructure
Cestode Infections parasitology
DNA, Ribosomal analysis
DNA, Ribosomal chemistry
Fishes
Fresh Water
Likelihood Functions
Microscopy, Electron, Scanning veterinary
RNA, Ribosomal, 18S genetics
Sequence Alignment veterinary
United States
Cestoda anatomy & histology
Cestode Infections veterinary
Fish Diseases parasitology
Perches parasitology
Perciformes parasitology
Subjects
Details
- Language :
- English
- ISSN :
- 1937-2345
- Volume :
- 106
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- The Journal of parasitology
- Publication Type :
- Academic Journal
- Accession number :
- 32932521
- Full Text :
- https://doi.org/10.1645/17-98