Otters yog carnivores, uas txhais tau hais tiaslawv yuav tsum noj nqaij, txawm li cas los xij, tus nab npawb cov khoom noj muaj tseeb nyob ntawm nws hom thiab chaw nyob.
Lawv cov ko taw webbed thiab whiskers ua rau lawv cov tsiaj nyeg zoo, txawm tias thaum tsaus ntuj lossis thaum dej tsaus. Muaj 13 hom ntawm cov noog uas nyob hauv ob qho tib si dej ntsev thiab cov dej tsis huv thoob plaws ntiaj teb. Hauv kab lus no, peb yuav tham txog ntau hom otter, lawv nyob qhov twg, thiab cov zaub mov twg lawv feem ntau noj.
Otters Nyob qhov twg?
Tshuaj ntawm otters tuaj yeem pom thoob plaws ntiaj teb. Otters tuaj yeem yog cov dej hauv dej, semiquatic, lossis marine, uas txhais tau hais tias lawv yuav tsum tau nkag mus rau lub cev dej. Qee cov noog, xws li cape clawless otters, muaj nyob hauv ntau qhov chaw sib txawv, los ntawm rainforests mus rau ntug dej hiav txwv. Lwm hom kab ntsig xav tau qhov chaw tshwj xeeb, xws li hiav txwv otter, uas nyob hauv thaj chaw ntug dej hiav txwv ntawm North Pacific Ocean.
Ntiaj teb no pom nyob rau hauv teb chaws As Mes Lis Kas yog North American tus dej Otter thiab hiav txwv Otter (California thiab Alaskan).
Otter Diets los ntawm Genus
Lutra
Otters nyob rau hauv Lutra genus yog dej otters, suav nrog North American dej otter, marine otter, ntev-tailed otter, Eurasian otter, chaw-caj dab otter, smooth-coated otter, yav qab teb dej otter, thiab plaub hau-nosed. otter. Lawv nyiam noj cov tsiaj hauv dej xws livaub kib, qav, kab, crustaceans, thiab, tau kawg, ntses Lawv kuj qee zaum noj noog thiab txawm tias tsiaj me.
Pteronura
Cov hom uas nyob rau lub genus no yog tus nab loj loj. Giant otters yog hom kab ntau tshaj plaws ntawm otter, ncav cuag 6 feet ntev thiab hnyav tshaj 60 phaus. Lawv feem ntau noj ntses, tab sis qee zaus lawv noj lwm yam tsiaj xws linoog, crustaceans, thiab txawm nab
Aonyx
Otters hauv genus Aonyx yog clawless. Peb hom hauv pawg no yog Cape clawless otter, Asian me-clawed otter, thiab Congo clawless otter. Cov nab no nyiam nojcrabs, ntses, worms, thiab qav.
Enhydra
Kawg tab sis tsis kawg, otters nrog genus Enhydra yog hiav txwv otters. Muaj peb subspecies ntawm hiav txwv otters: cov neeg Esxias los yog Lavxias teb sab hiav txwv otter, lub Californian hiav txwv otter, thiab lub Alaskan hiav txwv otter. Lawv nyiam noj cov pob txha xws lisea urchins, mussels, crabs, thiab clamsLawv siv cov pob zeb uas lawv nrhiav tau hauv dej hiav txwv los pab lawv tawg qhib lawv cov tawv tawv tawv kom lawv noj tau. soft sab hauv.
Otters Benefit the Ecosystem Li Cas?
Otters tseem ceeb heev rau cov dej ecosystems. Tshwj xeeb, hiav txwv otters tswj kelp hav zoov los ntawm kev noj ntau ntawm hiav txwv urchins, uas pub rau kelp thiab lwm hom seaweed. Kelp hav zoov yog qhov chaw ntawm zaub mov thiab chaw nyob rau ntau hom tsiaj. Thaum hiav txwv urchins dhau los, lawv deprive lwm yam tseem ceeb ntawm cov khoom noj, ua rau lawv tshaib plab. Vim hais tias hiav txwv otters muaj qhov cuam tshuam loj rau hauv ecosystem, lawv suav tias yog hom pob zeb tseem ceeb. Hmoov tsis zoo, zoo li ntau hom otter, tam sim no lawv raug kev puas tsuaj vim tib neeg kev ua haujlwm xws li kev lag luam plaub, roj nchuav, thiab nuv ntses nets.
Conclusion
Muaj ntau ntau hom noog uas nyob hauv thaj chaw thoob plaws ntiaj teb thiab sib txawv me ntsis ntawm lawv qhov loj me. Txawm li cas los xij, txhua hom tsiaj txhu xav tau qhov chaw dej rau qee qhov, uas txhais tau hais tias lawv sib koom ua ke ntawm ib puag ncig lawv nyob thiab hom zaub mov lawv noj. Feem ntau cov otters feem ntau noj cov tsiaj hauv dej xws li ntses, crustaceans, vaub kib, thiab qav. Qhov tseem ceeb, hiav txwv otters kuj noj invertebrates xws li hiav txwv urchins, uas pab ua kom cov chaw nyob ntug hiav txwv uas cia siab rau cov hav zoov kelp nyob rau hauv sib npaug. Los ntawm kev ua kom muaj kev paub txog kev puas tsuaj ntawm hiav txwv otters thiab lwm hom otter, peb cia siab tias peb tuaj yeem pab tiv thaiv cov tsiaj no kom tsis txhob tuag, vim lawv tseem ceeb heev rau cov dej hauv dej.
