Pusa
| Pusa | |
|---|---|
| Baikal seal | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Clade: | Pinnipedia |
| Family: | Phocidae |
| Tribe: | Phocini |
| Genus: | Pusa Scopoli, 1771 |
| Species | |
|
Pusa caspica | |
Pusa is a genus of the earless seals, within the family Phocidae. The three species of this genus were split from the genus Phoca, and some sources still give Phoca as an acceptable synonym for Pusa.
The three species in this genus are found in Arctic and subarctic regions, as well as around the Caspian Sea. This includes these countries and regions: Russia, Scandinavia, Britain, Greenland, Canada, the United States, Iran, Azerbaijan, Kazakhstan, and Japan. Due to changing local environmental conditions, the ringed seals found in the Canadian region has varied patterns of growth. The northern Canadian ringed seals grow slowly to a larger size, while the southern seals grow quickly to a smaller size.
Only the Caspian seal is endangered.
Species[edit]
- Caspian seal, Pusa caspica – (Gmelin, 1788)
- Ringed seal, Pusa hispida – (Schreber, 1775)
- Baikal seal or nerpa, Pusa sibirica – Gmelin, 1788
Taxonomy[edit]
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| Cladogram showing relationships among the extant members of genus Pusa, combining several phylogenetic analyses.[1] |
References[edit]
- ^ Berta, A.; Churchill, M. (2012). "Pinniped taxonomy: Review of currently recognized species and subspecies, and evidence used for their description". Mammal Review. 42 (3): 207–34. doi:10.1111/j.1365-2907.2011.00193.x.
Ferguson, Steven H.; et al. (2018). "Geographic Variation in Ringed Seal (Pusa Hispida) Growth Rate and Body Size". Canadian Journal of Zoology. 96 (no. 7): 649–659. doi:10.1139/cjz-2017-0213. </ref> }}
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