Koatit Elintavat | Lähteet | Aiheesta muualla | NavigointivalikkoInfobox OKVirheellinen NIMI-arvoNasuaITIS: Nasua

Puolikarhut


Wikispecies-logo.svgKoatit WikispeciesissäCommons-logo.svgKoatit CommonsissapuolikarhujapunakoativalkonenäkoaticozumelinkoativuorikoatiNicaraguassasammakoitapuumanjaguaarin






























Koatit eli nenäkarhut

Valkonenäkoati (Nasua narica)
Valkonenäkoati (Nasua narica)
Tieteellinen luokittelu
Domeeni:
Aitotumaiset Eucarya
Kunta:
Eläinkunta Animalia
Pääjakso:
Selkäjänteiset Chordata
Alajakso:
Selkärankaiset Vertebrata
Luokka:
Nisäkkäät Mammalia
Lahko:
Petoeläimet Carnivora
Alalahko:
Caniformia[1]
Heimo:
Puolikarhut Procyonidae
Suku:
Koatit
Nasua
Storr, 1780
Lajit [1]


  • Valkonenäkoati (Nasua narica)


  • Punakoati eli koati (Nasua nasua)

Katso myös

 Wikispecies-logo.svg Koatit Wikispeciesissä
 Commons-logo.svg Koatit Commonsissa



Infobox OKVirheellinen NIMI-arvo

Koatit eli nenäkarhut (Nasua) ovat Keski- ja Väli-Amerikassa eläviä puolikarhuja. Niiden sukuun kuuluu kaksi tai kolme eri lajia. Useimmat lähteet mainitsevat kaksi lajia[1]: punakoati eli koati eli punanenäkarhu (Nasua nasua) ja valkonenäkoati eli valkonenäkarhu (Nasua narica). Toisinaan myös valkonenäkoatin alalaji cozumelinkoati eli cozumelinnenäkarhu (Nasua narica nelsoni) luetaan omaksi lajikseen Nasua nelsoni. Neljäs koati-niminen laji, vuorikoati (Nasuella olivacea), ei kuulu varsinaisten koatien sukuun, mutta on niille sukua.[2]


Valkonenäkoateja elää esimerkiksi Nicaraguassa. Koateilla on paksu, raidallinen häntä, joka toimii kiipeillessä mainiona tasapainokeppinä. Niillä on nimensä mukaisesti pitkä kuono.



Elintavat |


Koatit käyttävät ravintonaan pääasiassa selkärangattomia, mutta ne syövät myös liskoja, sammakoita ja pieniä jyrsijöitä. Nenäkarhut saattavat joutua puuman tai jaguaarin syötäväksi. Tuntiessaan itsensä uhatuksi, koatit kiipeävät nopeasti puuhun. Urokset ovat erakkoja ja kuljeskelevat yksinään. Niitä kutsutaankin monin paikoin nimellä andasolos tai solitarios tai guaranin kielellä coatimundi eli yksinäinen koati. Naaraat elävät keskenään laumassa, jossa on noin 20–40 yksilöä. Kukin naaras synnyttää kolmesta kuuteen poikasta. Nenäkarhut ovat sukukypsiä noin 2-vuotiaina.



Lähteet |



  1. ↑ abc Wilson, Don E. & Reeder, DeeAnn M. (toim.): Nasua Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed). 2005. Johns Hopkins University Press. Viitattu 5.6.2010. (englanniksi)


  2. ↑ Macdonald, David: Nisäkkäät 1, s. 94. Maailman eläimet -sarjan 1. osa. Suomentanut Nurminen, Matti. Helsinki: Kustannusosakeyhtiö Tammi, 1986. ISBN 951-30-6530-8.



Aiheesta muualla |



  • ITIS: Nasua (englanniksi)

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