Geotria
Genus of lampreys
| Geotria | |
|---|---|
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| Drawing of Geotria australis by W. Wing | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | Hyperoartia |
| Order: | Petromyzontiformes |
| Family: | Geotriidae D. S. Jordan, 1923 |
| Genus: | Geotria J. E. Gray, 1851 |
| Species | |
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| Synonyms | |
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Geotria is the only genus in the lamprey family Geotriidae. It has 2 known species: Geotria australis (pouched lamprey) and Geotria macrostoma (Argentinian lamprey). Both species were considered conspecific until G. macrostoma was revived in a 2020 study.[1]
The family Geotriidae is most closely related to the lamprey family Mordaciidae, which has a similar Gondwanan distribution, and both families diverged during the Early Cretaceous. Together, their common ancestor diverged from the Petromyzontidae during the Middle Jurassic.[2]
G. australis spawns in Pacific-draining river basins in on either side of the southern Pacific (both Australasia and Chile), while G. macrostoma spawns in Atlantic-draining basins in southern South America and nearby subantarctic islands. Despite the occurrence of both species in South America and both formerly being considered conspecific, phylogenetic studies suggest that the lineages of both species diverged during the Late Cretaceous, indicating very ancient origins for both.[1][2]
References
- ^ a b Riva-Rossi C, Barrasso DA, Baker C, Quiroga AP, Baigún C, Basso NG (May 29, 2020). "Revalidation of the Argentinian pouched lamprey Geotria macrostoma (Burmeister, 1868) with molecular and morphological evidence". PLOS ONE. 15 (5): e0233792. Bibcode:2020PLoSO..1533792R. doi:10.1371/journal.pone.0233792. PMC 7259705. PMID 32470001.
- ^ a b Brownstein, Chase Doran; Near, Thomas J. (2023-01-23). "Phylogenetics and the Cenozoic radiation of lampreys". Current Biology. 33 (2): 397–404.e3. doi:10.1016/j.cub.2022.12.018. ISSN 0960-9822. PMID 36586410. S2CID 255278945.
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Extant lamprey species
- Kingdom Animalia
- Phylum Chordata
- Class Hyperoartia
- Order Petromyzontiformes
- Family Petromyzontidae
- Caspian lamprey (C. wagneri)
- Greek lamprey (C. hellenicus)
- Ionian brook lamprey (C. graecus)
- Modoc brook lamprey (E. folletti)
- Pit-Klamath brook lamprey (E. lethophagus)
- Lake lamprey (E. macrostomus)
- Miller Lake lamprey (E. minimus)
- Klamath River lamprey (E. similis)
- Pacific lamprey (E. tridentatus)
- Carpathian Brook Lamprey (E. danfordi)
- Korean lamprey (E. morii)
- Ukrainian brook lamprey (E. mariae)
- Drin brook Lamprey (E. stankokaramani)
- Vladykov's lamprey (E. vladykovi)
- Pouched lamprey (G. australis)
- Ohio lamprey (I. bdellium)
- Chestnut Lamprey (I. castaneus)
- Northern brook lamprey (I. fossor)
- Southern brook lamprey (I. gagei)
- Mountain brook lamprey (I. greeleyi)
- Silver lamprey (I. unicuspis)
- Least Brook lamprey (L. aepyptera)
- Portuguese lamprey (L. alavariensis)
- Qurem lamprey (L. auremensis)
- Western river lamprey (L. ayresii)
- European river lamprey (L. fluviatilis)
- Kern brook lamprey (L. hubbsi)
- Turkish brook lamprey (L. lanceolata)
- (L. lusitanica)
- Pacific brook lamprey (L. pacifica)
- European brook lamprey (L. planeri)
- Western brook lamprey (L. richardsoni)
- Alaskan brook lamprey (L. alaskensis)
- American brook lamprey (L. appendix)
- Arctic lamprey (L. camtschatica)
- Siberian brook lamprey (L. kessleri)
- Western Transcaucasian lamprey (L. ninae)
- Far Eastern brook lamprey (L. reissneri)
- Lombardy lamprey (L. zanandreai)
- Chilean lamprey (M. lapicida)
- Australian lamprey (M. mordax)
- Non-parasitic lamprey (M. praecox)
- Sea lamprey (P. marinus)
- Mexican lamprey (T. spadicea)
- Mexican brook lamprey (T. geminis)
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