Petromyzontidae

Petromyzontidae
Sea lampreys (Petromyzon marinus) on a lake trout
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Infraphylum: Agnatha
Superclass: Cyclostomi
Class: Petromyzontida
Order: Petromyzontiformes
Family: Petromyzontidae
A. Risso, 1827
Type genus
Petromyzon
Genera

Caspiomyzon
Entosphenus
Eudontomyzon
Ichthyomyzon
Lampetra
Lethenteron
Petromyzon
Tetrapleurodon
Occidentis

Petromyzontidae are a family of lampreys native to the Northern Hemisphere, comprising the vast majority of living lampreys.[1] Petromyzontids have the highest number of chromosomes (164–174) among vertebrates.[2]

Classification

Vladykov and Kott (1979) proposed classifying the Northern Hemisphere lamprays into three subfamilies: Petromyzontinae, Entospheninae and Lampetrinae.[3][4] Also Carim et al. (2024) proposed a genus Occidentis for western North American ‘Lampetra’.[5][6]

References

  1. ^ McEachran, J.; Fechhelm, J.D. (1998). Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Gasterosteiformes. Austin: University of Texas Press. p. 35. ISBN 978-0-292-75206-1. OCLC 38468784. Retrieved 12 July 2021.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.). "Family Petromyzontidae". FishBase. November 2025 version.
  3. ^ Vladykov, V.D. & Kott, E. 1979. List of Northern Hemisphere lampreys (Petromyzonidae) and their distribution. Department of Fisheries and Oceans Miscellaneous Special Publication 42: 30 pp.
  4. ^ Renaud, C.B. Lampreys of the world. An annotated and illustrated catalogue of lamprey species known to date. FAO Species Catalogue for Fishery Purposes. No. 5. Rome, FAO. 2011. 109 pp.
  5. ^ Carim, K. J., G. Auringer, M. F. Docker, C. B. Renaud, B. J. Clemens, M. R. Blanchard, C. Parker & M. K. Young 2024. Species diversity in the new lamprey genus Occidentis, formerly classified as western North American ‘Lampetra’. PLoS ONE 19 (12): e0313911: 1-21. https://doi.org/10.1371/journal.pone.0313911.
  6. ^ Kellie J. Carim, Claude B. Renaud, Michael K. Young & Margaret F. Docker 2025. Recognition of the lamprey genus Occidentis Carim et al., 2024 as distinct from Lampetra Bonnaterre, 1788. Zootaxa 5692(2): 393-399. https://doi.org/10.11646/zootaxa.5692.2.11.


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