Bever


Bjor viser hit, sjå òg øl.













Bever



Amerikansk bever Castor canadensis
Amerikansk bever Castor canadensis



Systematikk

Rike:

Animalia

Rekkje:

Chordata

Klasse:

Mammalia

Orden:

Rodentia
Familie:
Castoridae
Slekt:
Castor
















Bever
Namn på andre språk
NorrøntBjórr
SvenskBäver
DanskBæver
EngelskBeaver
TyskBiber
FranskCastor
SpanskCastor
RussiskBobr (Бобр)

Bever eller bjor er den største gnagaren som finst på den nordlege halvkula. Beverane omfattar familien Castoridaæ med dei to artane Castor canadensis og Castor fiber. Førstnemnde høyrer heime i Amerika, mens sistnemnde høyrer heime i Europa.


Beveren kan oppnå ei vekt på 40 kg. Han er dekt av tjukk, vasstett pels, og bakbeina er kraftige, med symjehud mellom de fem tærne. Forbeina derimot liknar våre hender, og beveren bruker dei med stor dyktigheit og presisjon til forskjellige oppgåver.


Beveren overgår alle andre pattedyr (unntatt mennesket) når det gjeld evna til å endre og tilpasse sitt livsmiljø. Det som imponerer mest er beveren sine demningar. Dei kan vere opptil fleire titals meter lange, og sørgjer for at vasstanden i hovudreviret er mest mogleg konstant. Sjølve beverhytta kan vere opptil 7 m i diameter, og huse 2–3 familiar, med høgast 8–10 individ.



Artar |



  • C. canadensis, amerikansk bever


  • C. fiber, europeisk bever



Autoritetsdata

  • GND

  • Dyntaxa

  • ITIS

  • FaunEur

  • EOL


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