Lamna
| Lamna Temporal range: Earliest Danian to Present
| |
|---|---|
| File:Lamna nasus noaa.jpg | |
| Porbeagle (L. nasus) | |
| File:Salmon Shark, Oceano, CA 93445, USA imported from iNaturalist photo 142845394 (cropped).jpg | |
| Salmon shark (L. ditropis) | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Division: | Selachii |
| Order: | Lamniformes |
| Family: | Lamnidae |
| Genus: | Lamna Cuvier, 1816 |
| Type species | |
| Lamna nasus Bonnaterre, 1788 porbeagle
| |
| Synonyms | |
| |
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Lamna is a genus of mackerel sharks in the family Lamnidae, containing two extant species: the porbeagle (L. nasus) of the North Atlantic and Southern Hemisphere, and the salmon shark (L. ditropis) of the North Pacific.
Endothermy
[edit | edit source]The two species of this genus can keep their blood temperature higher above that of the water surrounding them than other cartilaginous fish, with temperature differences recorded up to 15.6 °C.[2][3][4] Among fish, blood temperature regulation only occurs in large, fast species – bluefin tuna and swordfish are bony fish with similar abilities.
Species
[edit | edit source]- †Lamna attenuata (Davis, 1888)
- †Lamna carinata (Davis, 1888)
- Lamna ditropis C. L. Hubbs & Follett, 1947 (salmon shark)
- †Lamna hectori (Davis, 1888)
- †Lamna marginalis (Davis, 1888)
- Lamna nasus (Bonnaterre, 1788) (porbeagle)
- †Lamna quinquelateralis (Cragin, 1894)
- †Lamna trigeri (Coquand, 1860)
- †Lamna trigonata (Agassiz, 1843)
See also
[edit | edit source]References
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- ^ Abstract for S. D. Anderson, K. J. Goldman: “Temperature Measurements from Salmon Sharks, Lamna ditropis, in Alaskan Waters”, Copeia, Vol. 2001, No. 3, 2001-08-06
- ^ Salmon shark, Lamna ditropis at marinebio.org
- ^ C. Larsen, H. Malte, R. E. Weber: “ATP-induced Reverse Temperature Effect in Isohemoglobins from the Endothermic Porbeagle Shark” Archived 2007-09-29 at the Wayback Machine, Journal of Biological Chemistry vol. 278, issue 33, 30741–30747, 2003-08-15
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