Ex Uno Plures? Morphotype and Lineage Diversity of Bothriocephalus (Cestoda: Bothriocephalidea) in North American Freshwater Fishes
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
32932521
DOI
10.1645/17-98
PII: 444037
Knihovny.cz E-resources
- Keywords
- Bothriocephalus, Cestoda, Diversity, Freshwater Fishes, Host Specificity, North America, Tapeworms,
- MeSH
- Cestoda anatomy & histology genetics ultrastructure MeSH
- Cestode Infections parasitology veterinary MeSH
- Microscopy, Electron, Scanning veterinary MeSH
- Fish Diseases parasitology MeSH
- Perches parasitology MeSH
- Perciformes parasitology MeSH
- Likelihood Functions MeSH
- DNA, Ribosomal analysis chemistry MeSH
- RNA, Ribosomal, 18S genetics MeSH
- Fishes MeSH
- Base Sequence MeSH
- Sequence Alignment veterinary MeSH
- Fresh Water MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Canada MeSH
- United States MeSH
- Names of Substances
- DNA, Ribosomal MeSH
- RNA, Ribosomal, 18S MeSH
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.
References provided by Crossref.org
Fish tapeworms (Cestoda) in the molecular era: achievements, gaps and prospects
