Caspiomyzon is a genus of lamprey in the family Petromyzontidae. They are native to Eastern Europe and parts of Western and Central Asia. Two of the three species in the genus are endemic to Greece.[1]
| Caspiomyzon | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Petromyzontida |
| Order: | Petromyzontiformes |
| Family: | Petromyzontidae |
| Genus: | Caspiomyzon L. S. Berg, 1906 |
| Species | |
Taxonomy
editSpecies
editThere are currently three recognized species in this genus:[1]
- Caspiomyzon graecus (Renaud & Economidis, 2010) (validity doubtful, may be junior synonym of C. hellenicus)
- Caspiomyzon hellenicus (Vladykov, Renaud, Kott & Economidis), 1982 (Greek brook lamprey)
- Caspiomyzon wagneri (Kessler, 1870) (Caspian lamprey)
This was formerly considered a monotypic genus containing only C. wagneri, but phylogenetic studies suggest that hellenicus and graecus, formerly placed in Eudontomyzon, also belong to this genus.[2][3]
Evolution
editPhylogenetic studies indicate that they are the most basal members of the family Petromyzontidae, and their lineage diverged from the other genera in the family (Petromyzon and Ichthyomyzon) in the Late Cretaceous. The wagneri lineage diverged from the graecus+hellenicus lineage during the Eocene, although both Greek species only diverged during the late Pliocene.[4]
Ecology
editUnlike other lampreys, species of Caspiomyzon are suspected to feed on carrion rather than live prey.[5]
References
edit- ^ a b "FAMILY Details for Petromyzontidae - Northern lampreys". fishbase.mnhn.fr. Retrieved 2023-04-25.
- ^ Lang, N.J.; Roe, K.J.; Renaud, C.B.; Gill, H.S.; Potter, I.C.; Freyhof, J.; Naseka, A.M.; Cochran, P.; Pérez, H.E.; Habit, E.M.; Kuhajda, B.R.; Neely, D.A.; Reshetnikov, Y.S.; Salnikov, V.B.; Stoumboudi, M.T.; Mayden, R.L. (2009). "Novel relationships among lampreys (Petromyzontiformes) revealed by a taxonomically comprehensive molecular data set". American Fisheries Society Symposium. 72. Murdoch University: 41–55.
- ^ Pereira, Ana M.; Levy, André; Vukić, Jasna; Šanda, Radek; Levin, Boris A.; Freyhof, Jörg; Geiger, Matthias; Choleva, Lukáš; Francisco, Sara M.; Robalo, Joana I. (November 2021). "Putting European lampreys into perspective: A global-scale multilocus phylogeny with a proposal for a generic structure of the Petromyzontidae". Journal of Zoological Systematics and Evolutionary Research. 59 (8): 1982–1993. doi:10.1111/jzs.12522. hdl:10400.12/8279. ISSN 0947-5745. S2CID 239694977.
- ^ Brownstein, Chase Doran; Near, Thomas J. (2023-01-23). "Phylogenetics and the Cenozoic radiation of lampreys". Current Biology. 33 (2): 397–404.e3. Bibcode:2023CBio...33E.397B. doi:10.1016/j.cub.2022.12.018. ISSN 0960-9822. PMID 36586410. S2CID 255278945.
- ^ Renaud, Claude B.; Cochran, Philip A. (2019), Docker, Margaret F. (ed.), "Post-metamorphic Feeding in Lampreys", Lampreys: Biology, Conservation and Control, Dordrecht: Springer Netherlands, pp. 247–285, doi:10.1007/978-94-024-1684-8_3, ISBN 978-94-024-1682-4, retrieved 2023-11-06