Seal - shi ne cewa dabba?

Yau za mu iya cewa da tabbaci cewa idan da hatimin saboda wani yawan tsanani yanayi, da aka kashe a cikin shakka daga juyin halitta a matsayin wata jinsin, sa'an nan da Duniya zai zama mai yawa poorer. Me ya sa? Mu yi kokarin amsa tambaya a cikin wannan labarin.

Bayan karanta shi, za ka sami bayani game da abin da dabba mai hatimi, da abin da yake da darajar, abin da siffofi da shi yana da, da sauransu.

janar bayanai

Common sunan na cikin ruwa dabbobi masu shayarwa wadannan iyalai like (Caspian, ringed da Baikalian) - hatimi.

Sea like a Rasha yada daga Murmansk ga Bering mashigar ƙasar, ciki har da a ruwan Franz Josef Land, Novaya Zemlya, Severnaya Zemlya, fadar White Sea kuma da New Siberian Islands. Yana kawaici a bakin teku na teku na Okhotsk, ciki har da da dama na bays kuma ga ~ ar ruwan na Tatar mashigar, Sakhalin Gulf da kuma Gabas Sakhalin. Mazauninsu hatimi kai Coast na Japan tsibirin Hokkaido.

Akwai ma like cewa rayuwa a cikin kandami da sabo ruwa. Alal misali, sanannen Rasha Lake Baikal da aka sani a ko'ina cikin duniya ba ne kawai, domin shi ne mafi bayyanawa da kyau lake. Ruwanta ake sanaki musamman dabba, wanda babu inda kuma a cikin irin wannan kududdufai. Wannan hatimi, suna fama da kuma relict na zurfi fauna. An kira da Baikal hatimi.

description

Su wane ne like? Wadannan ban mamaki dabbobi masu shayarwa suna da wani fusiform jiki, m mirgina a kansa.

A ci gaba da suka isa 165 cm da su nauyi ne 50 ga 130 kg. dabba jiki ƙunshi babban adadin subcutaneous mai, daidai rike zafi a cikin ruwan sanyi da kuma taimaka dabba jira tsawon lokaci na karancin abinci, kazalika da riƙe ruwa surface a lokacin barci. Su barci don haka soundly cewa ko da akwai sau lokacin da su iri iri za su iya juya ba tare da tsoma baki da su barci.

Strong dabba fata rufe wuya, m da gajeren gashi gashi. Tsakanin yatsunsu suna da kunne da kuma gaban flippers suna sanye take da iko fika. Shi ne da godiya ga gaban wata gabar jiki like yin wani nuna a cikin kankara, ka fita bayan farauta da kuma shakata da kankara ko a kan kankara, da kuma numfasawa sabo ne iska.

The hatimi yana da wani mamaki ikon zauna a karkashin ruwa har zuwa 40 minutes ci gaba. Wannan shi ne saboda kasancewar wani kananan adadin haske da kuma abun ciki na narkar da oxygen a cikin jini. Saboda da Hind kafafu dabba iyon quite sauri a karkashin ruwa, amma a kan surface shi ne quite m, kuma m.

Seals a Lake Baikal

A baya, da Baikal hatimi dabba da aka quite girmamawa, musamman tsakanin kasashe, bautarka mafi teku farauta. Ko a yanzu, wasu daga cikin Orochi aka sa a cikin bakin cirewa hatimi daga daji tafarnuwa da kuma taba, domin shi ne a gare su a irin hadaya Tam, to wanda hatimi ne mafi dacewa domin shi ne master na marine kashi.

A cikin tsohon kwana, da Baikal hatimi farauta shi ne babban tattalin arziki muhimmanci ga gida rayuwar, samar da waɗannan dabbobi ne tsananin iyaka. A kwatanta da sauran jinsunan hatimi pelts na Jawo (da matasa da kuma manya m) ne mafi kyau Jawo raw kayan, sabõda haka sũ mãsu fiye gõdadde.

Mazauninsu Baikal like

A lokacin rani (Yuni) gaci Ushkaniye tsibiran niyya da manyan yawan wadannan dabbobi - tsibirin ga su suna jin dadi halitta halitta rookery. A faɗuwar rana, like fara taro motsi zuwa tsibirin.

A lokacin tsanani frosts na Siberia lake gaba daya freezes. Kafin farko na sanyi weather hatimi yin amfani da su hakora da kuma gaban paws tare da kaifi fika tono numfashi ramukan don kansu. Yawancin lokaci a cikin hunturu a kan surface wani daskararre lake mafi yawan lokaci ciki mace.

A masana'antu samar

Seal - dabba, wanda ya ƙunshi manyan yawa na mai kwazazzabo, yana da wasu amfani magani Properties. The sayar da samar da like a yau, kamar daruruwan shekaru da suka wuce, bi da guda a raga.

Kitsen dabba da mutane da yawa da aka yadda ya kamata a yi amfani da magani daga wasu cututtuka dangantawa da hypothermia (kumburi, frostbite), kuma da nama da ake amfani da abinci tare da wani rashi na bitamin C (kamar a scurvy).

Duk da haka, babban dalilai na manyan-sikelin masana'antu samar - mafi muhimmanci da dabba fãtun jikinsu. Hats da kuma tufafi daga lokacin farin ciki, m Jawo tare da m zane ne yadu mashahuri a cikin mazauna Arewa, kuma a cikin mafi kudancin yankunan.

haifuwa

Hatchling hatimi, yawanci bayyana a cikin tsakiyar watan Maris. Bayan karshen hunturu, da mace jan gindi daga cikin ruwa uwa da kankara ba ta haifi jariran. Amma da farko mace yi den a cikin dusar ƙanƙara ga su nan gaba dalibinsa.

Abin baƙin ciki, a wannan lokaci ringed hatimi na fuskantar mafi girma da hadari - zama da sauki ganima saboda mutane da yawa, mafarauta sun kuma dayansu. M like haife wani jariri, amma akwai iya zama biyu, ko ma fiye.

Haihuwa nauyi, yawanci game 4 kilo. Suna haife tare da wani kyau sosai fari konkoma karãtunsa fãtun, samar da su zafi da kuma mafi m sake kamanni a cikin dusar ƙanƙara.

Bayan molting hatimi cub acquires silvery Jawo.

tsawon rayuwar

Girmancin hatimi kamar yadda a tsawon da nauyi, akwai wani dogon lokaci (har zuwa 20 years). Wasu dabbobi da mutuwa "nedorosshimi", kamar yadda su talakawan shekaru a cikin yawan ne daidai kawai 8-9 shekaru. Akwai lokuta da cewa wasu like rayu har zuwa 40-60 shekaru, amma su ne 'yan kaxan. Aƙalla rabin dukan mutane - matasa hatimi game 5 shekara. Mazan dabbobi (6-16 years old) yi har wani babban ɓangare na sauran rabin na like.

Seal - wannan sabon abu dabba a ji cewa ya haihuwa, masana kimiyya sun koya su gane ta fangs ko fika, wanda za ka iya duba da shekara-shekara zobba, irin waɗanda cewa dole yanke itace.

abinci

Dalili na marine abinci like - kifi da Shellfish, wanda ya samar da manyan aggregations a cikin gari marinjãya yadudduka na ruwa.

Na fi so abinci ne Baikal hatimi - da Baikal da kuma goby kifi golomyanka. A lokacin shekara, dabba yana amfani da fiye da ton na abincin dabbobi. Lokaci-lokaci shi samun a cikin abinci da cisco da kimanin 3% na ta kullum rage cin abinci.

ban sha'awa facts

1. Dlinnomordye da kuma harbor like tare da teku giwaye raba guda mazauninsu - teku.

2. Seal - yana da wani babban mai nutsa, iya isa zurfin mita 400.

3. Kullum, da like kada rayuwa a cikin sabo da ruwa, amma a tafkin Baikal a Rasha ya zama real gida da wasu daga cikin yan uwa. Yadda ya yi da yawan jama'a na like a Lake Baikal? Ya zuwa yanzu, shi ya kasance wani asiri. A cewar daya labari, a cikin wadannan wurare akwai wasu unknown karkashin kasa tashar haɗa da lake zuwa cikin teku. Masana kimiyya sun gano wata shaida wannan gaskiyar. A mafi m hanya ne Baikal hãtimi a kan Angara da Yenisei. An lura da cewa a nan a wannan hanya da kuma buga kifi omul.