View source for Biology:Pusa

{{short description|Genus of mammals}}
{{automatic taxobox
| image = Байкальская нерпа - Pusa sibirica.jpg
| image_caption = Baikal seal
| taxon = Pusa
| authority = Scopoli, 1771
| type_species = ''Phoca foetica''<ref>{{MSW3|id=14001066}}</ref>
| subdivision_ranks = Species
| subdivision = ''Pusa caspica''<br/>
''Pusa hispida''<br/>
''Pusa sibirica''
}}

'''''Pusa''''' is a [[Biology:Genus|genus]] of the [[Biology:Earless seal|earless seal]]s, within the family [[Biology:Phocidae|Phocidae]]. The three species of this genus were split from the genus ''[[Biology:Phoca|Phoca]]'', and some sources still give ''Phoca'' as an acceptable synonym for ''Pusa''.

The three [[Biology:Species|species]] in this genus are found in Arctic and subarctic regions, as well as around the Caspian Sea. This includes these countries and regions: {{wipe|Russia}}, {{wipe|Finland}}, [[Place:Scandinavia|Scandinavia]], Britain, [[Place:Greenland|Greenland]], {{wipe|Canada}}, the United States, [[Religion:Iran|Iran]], [[Place:Azerbaijan|Azerbaijan]], Kazakhstan, and {{wipe|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 species of ''Pusa'' is endangered, while two subspecies of the ringed seal are [[Biology:Vulnerable species|vulnerable]] and endangered, [[Biology:Ladoga seal|Ladoga seal]] and Saimaa ringed seal respectively.

==Taxonomy==
{{cladogram|align=left
  |clade=
    {{clade
      |label1=Pusa
      |1={{clade
        |1={{clade
          |1=ringed seal
          |2=Baikal seal
        }}
        |2=Caspian seal
      }}
    }}|caption=[[Biology:Cladogram|Cladogram]] showing relationships among the extant members of genus Pusa, combining several phylogenetic analyses.<ref name="Berta 2012">{{Cite journal |author1=Berta, A. |author2=Churchill, M. |title=Pinniped taxonomy: Review of currently recognized species and subspecies, and evidence used for their description |journal=Mammal Review |year=2012 |volume=42 |issue=3 |pages=207–34 |doi=10.1111/j.1365-2907.2011.00193.x}}
</ref>
}}

===Species===
{{Species table |genus=[[Biology:Pusa|Pusa]] |authority-name= Scopoli |authority-year= 1771 |species-count=three|no-note=y|narrow-percent=75}}

{{Species table/row
|name=Caspian seal|binomial=Pusa caspica
|image=File:Caspian seal 03.jpg|image-size=180px |image-alt=
|authority-name=[[Biography:Samuel Gottlieb Gmelin|Gmelin]]|authority-year= 1788  |authority-not-original=yes
|range=Caspian Sea
|range-image=File:Caspian Seal area.png
|range-image-size=180px
|size=
|habitat=
|hunting=
|iucn-status= EN
|population=
|direction=
|subspecies=
}}


{{Species table/row
|name= Ringed seal|binomial=Pusa hispida
|image=File:Pusa hispida hispida NOAA 1.jpg |image-size=180px |image-alt=
|authority-name=Schreber |authority-year= 1775 |authority-not-original=yes
|range=  northern coast of Japan in the Pacific, and throughout the North Atlantic coasts of Greenland and Scandinavia as far south as Newfoundland, and include two freshwater subspecies in northern Europe
|range-image=File:Phoca hispida distribution.png
|range-image-size=180px
|size=
|habitat=
|hunting=
|iucn-status= LC
|population=
|direction=
|subspecies={{Collapsible list |expand=yes |title=Five subspecies |bullets=on
|''P. h. hispida'' in the [[Earth:Arctic Ocean|Arctic Ocean]] and Bering Sea
|''P. h. ochotensis'' in the Sea of Okhotsk
|''P. h. saimensis'' in Lake Saimaa in {{wipe|Finland}}
|''[[Biology:Ladoga seal|P. h. ladogensis]]'' in nearby [[Earth:Lake Ladoga|Lake Ladoga]] in {{wipe|Russia}}
|''P.h. botnica'' in the Gulf of Bothnia.
}} 
}}

{{Species table/row
|name= Baikal seal or nerpa|binomial=Pusa sibirica
|image=File:Baikal-seal 4747-pho.jpg |image-size=180px |image-alt=
|authority-name=Gmelin|authority-year= 1788 |authority-not-original=
|range=  Lake Baikal in Siberia, Russia
|range-image=File:Baikal Seal area.png
|range-image-size=180px
|size=
|habitat=
|hunting=
|iucn-status= LC
|population=
|direction=
|subspecies=
}}

{{Species table/end}}



==References==
{{Reflist}}
* {{Cite journal |author1=Ferguson, Steven H.  |display-authors=0|title=Geographic Variation in Ringed Seal (Pusa Hispida) Growth Rate and Body Size. |journal=Canadian Journal of Zoology |year=2018 |volume=96 |issue= 7 |pages=649–659 |doi=10.1139/cjz-2017-0213}}

{{Taxonbar|from=Q310863}}

[[Category:Mammal genera]]



{{Sourceattribution|Pusa}}