grizzly bear

Mawallafi: John Stephens
Ranar Halitta: 24 Janairu 2021
Sabuntawa: 20 Nuwamba 2024
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Wadatacce

O launin toka mai launin toka (Ursus arctos horribilis) yana ɗaya daga cikin dabbobin alama Amurka, duk da haka, wannan bai hana shi zama ɗaya daga cikin dabbobin da ke cikin haɗari a nahiyar Amurka ba. Berayen masu launin toka suna da alaƙa ta kusa da grizzly bears a cikin yankin Eurasian, amma nisa da lokaci ya sa su bambanta ta hanyoyi da yawa.

Akwai nau'ikan beyar da yawa, amma a cikin wannan takardar PeritoAnimal, muna magana dalla -dalla game da grizzly bear: halayensa, mazauninsa, haifuwa da ƙari mai yawa. Ci gaba da karatu!

Source
  • Amurka
  • Kanada
  • Amurka

asalin grizzly bear

Bear grizzly (Ursus arctos horribilis) su a grizzly bear subspecies (Ursus arctos), daga Turai. Bayan ja da baya na kankara fiye da shekaru 50,000 da suka gabata, an buɗe wata hanya wadda beyar launin ruwan kasa ta sami nasarar isa arewacin nahiyar Amurka.


A tsawon lokaci, grizzly bears rabuwar juyin halitta na danginsu na kusa, suna kafa a Arewacin Amurka nau'ikan da ke cikin daidaituwa har zuwa lokacin da Turawan mulkin mallaka suka mallaki mutane, wanda a lokacin yawan yawan mutane ya ragu sosai. A cikin shekaru 100, grizzly bears sun rasa kusan kashi 98% na yankinsu.

grizzly bear halaye

Grizzly bear ya bambanta ƙwarai da girma da siffa dangane da wane yanki na Arewacin Amurka ya fito, kodayake akwai wasu halaye. Misali, tsarin kashin ku yana da nauyi fiye da yawancin nau'in bear. Kafafuwansa guda huɗu kusan tsayin juna ɗaya ne, yana ƙarewa cikin dogayen faratu waɗanda za su iya kaiwa santimita 8 a tsayi, sun fi na baƙar fata bears (ursus americanus) da polar bears (Ursus Maritimus).


Nauyin waɗannan dabbobin ya bambanta gwargwadon yanki, jinsi, lokacin shekara da shekaru. Misali, balagaggen bears na tsibirin Alaska, wanda galibi yana cin kifi, shine mafi nauyi, tare da kusan 360 fam. Bears daga yanki mai kusanci, Yukon, a gefe guda, saboda ba sa cin kifi, nauyinsu ya wuce kilo 150 kawai. Mata a Yankin Alaska suna auna kimanin kilo 230, yayin da mata a Yukon yawanci ba sa wuce kilo 100. A gefe guda, a lokacin ƙarshen bazara da faɗuwar rana, bears suna samun nauyi, wanda suke rasa daga baya yayin rashin barci.

grizzly bear mazaunin

Grey bears suna zaune a cikin Alaska, Kanada da Arewa maso Yammacin Amurka. A cikin wadannan yankuna, da gandun daji, kamar Pine da spruce. Kodayake hanyar rayuwarsu tana da alaƙa da itace daga waɗannan bishiyoyin, grizzly bears kuma suna buƙatar makiyaya, gogewa da ciyayi. Ana samun mafi mahimmancin yawan waɗannan bears a Alaska, yankin da suke samun abinci mai yawa don bukatun su. Hakanan, a can suna da su wurare masu fadi don tafiya. Wadannan bears suna yini suna tafiya daga wuri zuwa wuri don neman abinci, don haka yankunansu suna buƙatar faɗaɗawa sosai.


grizzly bear ciyar

Kamar sauran beyar, grizzly bears ne dabbobi masu omnivorous. A tsibirin Alaskan da Yukon, babban abincin su don tsira duk shekara shine kifi. Kodayake suna buƙatar ɗimbin yawa, sun ƙare zama ƙwararrun masunta a ƙarshe.

Hakanan, beyar ma tana ci 'ya'yan itatuwa da kwayoyi miƙa ta shuke -shuke a yankin. A lokuta da yawa, waɗannan kwayoyi suna da mahimmanci don samun kitse mai mahimmanci yayin bacci. Hakanan suna iya ciyar da ganyayyaki, ganye, haushi, tushen da sauran sassan shuka. Kodayake suna kama da dabbobi masu jinkirin, grizzly bears suna da sauri kuma suna iya ma farautar muse babba da dai sauransu.

grizzly bear haifuwa

Lokacin dabbar dabbar bears yana faruwa daga Mayu zuwa Yuli. A wannan lokacin, maza suna da mafi m hali, kasancewa mafi kariya tare da yankunansu da kuma matan da ke wucewa a can. Lokacin da namiji da mace suka sadu, ana yin soyayya wanda ya haɗa da farauta da wasanni na awanni da yawa. Bayan yin jima'i, dabbobin biyu sun rabu.

Bear grizzly na mata, kamar na sauran nau'in beyar polyestrics na zamani tare da jinkirin dasawa. Wannan yana nufin za su iya samun zafi da yawa a lokacin bazara kuma cewa, da zarar an yi kwaɗayi da haɓuwa, ƙwai ba ya shiga cikin mahaifa sai bayan watanni da yawa.

Ciki yana tasowa ta hanyar lokacin bacci, wanda ke faruwa a cikin watanni masu sanyi kuma yana iya wuce watanni shida. Lokacin da ya ƙare, an haifi zuriya, tsakanin mutum daya zuwa biyu teddy bears. Za su zauna tare da mahaifiyarsu tsakanin shekaru 2 zuwa 4, har sai sun sami cikakken 'yanci.