![Kodiak Xyooj Kodiak Xyooj](https://i.fascinatesanimals.com/images/002/image-3575-1-j.webp)
The Kodiak dais (Ursus arctos middendorffi), tseem hu ua Alaskan giant dais, yog ib tug subspecies ntawm xim av dais nyob rau hauv lub Kodiak Island thiab lwm lub zos ntug dej hiav txwv nyob rau yav qab teb Alaska. Cov tsiaj no sawv tawm rau lawv qhov loj thiab muaj zog zoo kawg li, yog ib qho ntawm cov tsiaj loj tshaj plaws hauv ntiaj teb, nrog rau tus dais polar.
Keeb kwm ntawm kodiak dais
Raws li peb tau hais rau koj lawm, kodiak dais yog ib hom subspecies of the brown bear (Ursus arctos), ib hom ntawm tsev neeg Ursidae uas nyob hauv Eurasia thiab North America thiab muaj ntau tshaj 16 subspecies pom hnub no. Tshwj xeeb, kodiak bears yog ib txwm nyob rau sab qab teb Alaska thiab cov cheeb tsam hauv qab, xws li Kodiak Island.
Keeb Kwm, kodiak dais tau piav raws li hom tshiab ntawm dais los ntawm American naturalist thiab zoologist taxonomist hu ua C. H. Merriam. Nws thawj lub npe tshawb fawb yog Ursus middendorffi nyob rau hauv kev hwm rau ib tug zoo naturalist ntawm B altic keeb kwm hu ua Dr. A. Th. Von Middendorff. Ob peb xyoos tom qab ntawd, tom qab kev tshawb fawb txog kev tshawb fawb ntxaws ntxaws, tag nrho cov bears xim av uas tshwm sim hauv North America tau coj los ua ke hauv tib hom: Ursus arctos
Tsis tas li ntawd, ntau qhov kev tshawb nrhiav caj ces tau ua kom pom tau tias kodiak dais yog "muaj feem cuam tshuam" rau cov bears xim av hauv Tebchaws Meskas, suav nrog cov neeg nyob hauv Alaskan ceg av qab teb, thiab kuj muaj xim av. bears Los ntawm Russia. Txawm hais tias tseem tsis tau muaj cov kev tshawb fawb pom tseeb, vim nws tau kwv yees tias kodiak bears raug cais tawm rau ntau pua xyoo (tsawg kawg txij li lub hnub nyoog dej khov kawg, Nws tshwm sim li 12 xyoo dhau los.000 xyoo). Ib yam li ntawd, nws tseem tsis tau paub txog kev tiv thaiv kab mob tiv thaiv kab mob lossis cov kab mob congenital deformities los ntawm inbred crosses nyob rau hauv no subspecies.
Alaskan Giant Bear Appearance and Anatomy
Kodiak dais yog ib hom tsiaj loj heev, uas tuaj yeem ncav cuag qhov siab ntawm withers ntawm kwv yees li 1.3 meters. Tab sis ntxiv rau, nws tuaj yeem ncav cuag 3 meters ntawm ob txhais ceg, uas yog, thaum nws tau txais txoj haujlwm bipedal. Nws kuj tseem sawv tawm rau nws txoj kev ua tau zoo, nrog rau cov poj niam uas hnyav ib ncig ntawm 200 kg, thaum txiv neej tuaj yeem tshaj 300 kg hauv lub cev hnyav Ib yam li ntawd, Txiv neej kodiak bears tau sau tseg. hnyav tshaj 600kg hauv cov tsiaj qus, thiab ib tus neeg lub npe menyuam yaus "Clyde" uas nyob hauv North Dakota Zoo tau tshaj 950kg.
Vim yog huab cua tsis zoo nws yuav tsum ntsib, kodiak dais khw 50% ntawm nws lub cev hnyav hauv rog , txawm li cas los xij, hauv Cov poj niam cev xeeb tub, daim duab no ntau dua 60%, vim lawv xav tau lub zog loj kom muaj sia nyob thiab saib xyuas lawv cov tub ntxhais hluas. Ntxiv nrog rau lawv qhov loj me, lwm qhov tshwj xeeb ntawm kodiak bears yog lawv dense fur uas tau yoog zoo rau kev nyab xeeb ntawm lawv qhov chaw nyob. Hais txog cov xim ntawm lub tsho tiv no, kodiak dais feem ntau pom cov xim ntawm cov xim daj thiab txiv kab ntxwv mus rau xim av tsaus. Thaum lawv thawj ob peb xyoos ntawm lub neej, cov menyuam dev feem ntau pom ib lub nplhaib dawb "natal" nyob ib ncig ntawm lawv lub caj dab.
Cov Alaskan loj heev no kuj muaj qee qhov loj, ntse heev thiab retractable claws uas yog qhov tseem ceeb rau lawv hnub yos hav zoov thiab lawv pab lawv tiv thaiv lawv tus kheej kom tsis txhob muaj kev tawm tsam lossis tawm tsam rau thaj chaw tiv thaiv lwm tus txiv neej.
Kodiak Xyooj Behavior
Kodiak bears nyiam tuav txoj kev ua neej nyob rau hauv lawv qhov chaw nyob, sib ntsib tsuas yog thaum lub caij yug me nyuam thiab thaum kawg muaj kev sib cav txog thaj chaw. Tsis tas li ntawd, txij li lawv muaj thaj chaw me me, txij li lawv feem ntau mus rau thaj tsam nrog cov ntses salmon spawning kwj, nws yog ib qho pom cov pab pawg ntawm kodiak bears raws cov kwj ntawm Alaska thiab Kodiak Island. Nws tau kwv yees tias qhov " kev ua siab ntev ntev" tej zaum yuav yog hom kev yoog raws, txij li los ntawm kev txo qis kev sib ntaus rau thaj chaw nyob rau hauv cov xwm txheej no, lawv tswj kom tswj tau. khoom noj khoom haus zoo dua thiab, yog li ntawd, lawv noj qab nyob zoo thiab muaj zog kom yug me nyuam thiab muab txuas ntxiv rau cov pejxeem.
Hais txog zaub mov, kodiak dais yog omnivorous tsiaj, uas nws cov zaub mov suav nrog txhua yam ntawm nyom, cag thiab berries ib txwm ntawm Alaska, rau Pacific salmon thiab medium-thiab-loj-loj mmmals xws li cov ntsaws ruaj ruaj, elk thiab mos lwj. Lawv kuj tseem tuaj yeem haus cov algae thiab cov pob txha pob txha uas sib sau ntawm ntug hiav txwv tom qab lub caij ntuj nag. Nrog rau kev nce qib ntawm tus txiv neej ntawm nws qhov chaw nyob, feem ntau ntawm Kodiak Island, qee qhov kev coj cwj pwm zoo tau pom nyob rau hauv cov subspecies. Thaum cov zaub mov tsis txaus, kodiaks nyob ze cov nroog lossis cov nroog yuav txav mus ze rau cov chaw hauv nroog kom raug rau tib neeg cov zaub mov pov tseg.
Bears tsis muaj qhov tseeb hibernation zoo li lwm yam tsiaj hibernating xws li groundhogs, hedgehogs thiab squirrels. Rau cov tsiaj loj thiab muaj zog no, hibernation nws tus kheej yuav cuam tshuam rau kev siv hluav taws xob ntau los tswj lawv lub cev kub nrog lub caij nplooj ntoos hlav tuaj txog. Tab sis txij li tus nqi metabolic no yuav tsis ruaj khov rau tus tsiaj, txawm tias nws txoj sia nyob muaj kev pheej hmoo, kodiak bears tsis hibernate, tab sis es tsis txhob muaj ib hom lub caij ntuj no pw Yog Txawm hais tias lawv yog cov txheej txheem metabolic zoo sib xws, thaum lub caij ntuj no pw tsaug zog, lub cev kub ntawm bears poob tsuas yog ob peb degrees, tso cai rau tus tsiaj pw ntev ntev hauv nws qhov tsua, txuag lub zog ntau thaum lub caij ntuj no.
Kodiak Dais Ua Si
Feem ntau, tag nrho cov subspecies ntawm grizzly bears, nrog rau kodiak dais, yog monogamous thiab ncaj ncees rau lawv cov phooj ywg. Nyob rau txhua lub caij sib tw, txhua tus neeg ntsib nws tus khub ib txwm, kom txog rau thaum ib tus ntawm ob tus tuag. Ib yam li ntawd, lawv tuaj yeem mus ntau lub caij tsis muaj kev sib tw tom qab kev tuag ntawm lawv tus khub ib txwm, kom txog rau thaum lawv xav tias yuav tau txais tus khub tshiab.
Lub caij yug me nyuam rau kodiak dais tshwm sim ntawm hli ntawm Tsib Hlis thiab Lub Rau Hli, nrog rau lub caij nplooj ntoos hlav tuaj txog rau sab qaum teb Hemisphere. Tom qab mating, cov khub niam txiv feem ntau nyob ua ke ob peb lub lis piam, siv sijhawm so thiab sib sau ua zaub mov zoo. Txawm li cas los xij, cov poj niam nthuav tawm qeeb implantation, txhais tau hais tias cov qe fertilized txuas mus rau phab ntsa uterine thiab tsim ob peb lub hlis tom qab mating, feem ntau thaum lub caij nplooj zeeg
Zoo li feem ntau cov tsiaj, kodiak bears yog cov tsiaj viviparous, uas txhais tau hais tias fertilization thiab kev loj hlob ntawm cov tub ntxhais hluas tshwm sim nyob rau hauv lub tsev menyuam. Cov menyuam dev feem ntau yug thaum lub caij ntuj no, thaum lub Ib Hlis thiab Lub Peb Hlis, nyob rau hauv tib lub qhov quav uas lawv niam tau nyiam lub caij ntuj no pw tsaug zog. Txhua tus poj niam feem ntau yug tau 2 mus rau 4 tus menyuam dev ntawm txhua tus me nyuam, uas yug hnyav yuav luag 500 grams thiab yuav nyob nrog lawv niam lawv txiv mus txog thaum lawv muaj peb xyoos, txawm lawv yuav mus txog kev sib deev thaum lawv muaj 5 xyoos xwb.
Kodiak bears muaj Kodiak bears muaj Kodiak bears muaj Kodiak bears muaj Kodiak dais muaj Kodiak bears muajntawm cov txiv neej nrog rau cov xeeb ntxwv. Qhov no yog ib qho ntawm cov ntsiab lus tseem ceeb uas cuam tshuam kev nthuav dav ntawm lawv cov tsiaj, nrog rau "kev ua si" yos hav zoov.
Kodiak Bear Conservation Status
Vim cov xwm txheej nyuaj ntawm nws qhov chaw nyob thiab nws txoj hauj lwm hauv cov saw zaub mov, kodiak dais tsis muaj cov tsiaj nyeg. Raws li peb tau hais, cov txiv neej ntawm no subspecies lawv tus kheej tuaj yeem dhau los ua cov tsiaj txhu ntawm cov menyuam yaus vim muaj kev tsis sib haum xeeb ntawm thaj chaw. Tab sis lwm yam tshaj li qhov kev coj cwj pwm no, tib qho kev hem thawj rau kev ciaj sia ntawm kodiak dais yog yos hav zoov thiab deforestation Kev yos hav zoov ncaws pob raug tso cai raws li kev tswj hwm hauv Alaska panhandle. Yog li ntawd, kev tsim National Parks tau dhau los ua qhov tseem ceeb rau kev txuag ntawm ntau haiv neeg, ntawm cov uas yog kodiak dais, vim nyob rau hauv cov cheeb tsam tiv thaiv kev yos hav zoov yog txwv tsis pub..