Steller ta teku saniya - dadadden jinsin sirens tawagar

Cikin dukanin ƙarni na wanzuwar wannan duniya tamu, da yawa jinsunan tsirrai da dabbobi bayyana kuma ya bace. Wasu daga cikinsu ya mutu fita saboda m rai yanayi, da sauyin yanayi, da dai sauransu, amma mafi aka kashe da hannun ɗan adam. Steller ta teku saniya, ko kuma wajen tarihin ta hallaka, ya zama mai haskakewa a misali na mutum mugunta da wautar, saboda a irin wannan kudi da abin da aka halaka su da wata dabba mai shayarwa, shi da aka ba a hallaka, wata dabba a cikin ƙasa.

Ana sa ran cewa babbar saniya wanzu yawa dubban shekaru da suka wuce. A wani lokaci a yankin na ta mazauninsu rufe mafi yawan Arewa Pacific Ocean, kusa da dabba gana da Kwamandan kuma Aleutian Islands, Japan, Sakhalin, Kamchatka. Arewa Manatee zai yi rai ba, saboda ta na bukatar warmer ruwa, kuma zuwa kudu ta hallaka dubban shekaru da suka wuce. Bayan da narkewa glaciers Sea matakin ya tashi, da kuma Steller ta teku saniya aka kira ga tsibiran daga nahiyoyi, wanda ya yarda da shi ya wanzu har zuwa cikin XVIII karni, a lokacin da Amirul Islands aka sanaki mutane.

The dabba ne mai suna bayan da masanin kimiyyar-masanin kimiyya Steller, wanda ya gano wannan nau'in a 1741. The dabba mai shayarwa ya sosai a kwantar da hankula, barrantacce da kuma sada zumunci. Its nauyi ya game 5 ton, a tsawon na jiki isa 8 m. Musamman prized saniya mai, ta kauri ya a da nisa daga cikin mutum dabino, shi yana da m m dandano da aikata ba spoiled ko da a cikin zãfi. A nama kama nama, kamar wani kadan tighter, ya dangana magani Properties. A fata amfani ga upholstery na jiragen.

Steller ta teku saniya da aka kashe saboda ya credulity da kuma wuce kima philanthropy. Ta kullum ci algae, don haka yin iyo a kusa da bakin, rike kansa a karkashin ruwa, da kuma jiki saman. Saboda haka, za ka iya amince iyo to shi da jirgin ruwa da kuma ko da bugun jini. Idan zafi ya sa da dabba, ita tanã gudãna daga Coast, amma nan da nan mayar da sake, kuma ya manta da korafinsu.

Farauta shanu kawai game da mutane 30, saboda hatsarori huta, kuma ya na da wuya a samu zuwa gaci. Lokacin da rauni dabba bace numfashi dauke da kuma suna makoki mara karewa, idan akwai dangi, da suka yi kokari don taimaka, ya juyar da jirgin ruwan da ya buga da igiya wutsiyoyi. Yana da bakin ciki, amma da Steller ta teku saniya da aka hallaka a kasa da uku da suka gabata tun lokacin da aka gano daga cikin jinsunan. Tuni a 1768 ya bace karshe wakilin wannan kyau-natured teku mazauni.

Tsakanin masana kimiyya da kuma shawara a kan mazauninsu na wannan dabba mai shayarwa suna ci gaba a yau. Wasu jayayya da cewa kawai Steller ta teku saniya rayu a kusa da tsibirin Copper da Bering, wasu sukan yi tunanin cewa sun hadu ne a yankin na Alaska da kuma Far East. Amma shaida na biyu zato ba sosai, yana da ko dai gawawwakin jefa fitar da teku, ko hasashe yan unguwa. Amma duk da haka saniya kwarangwal da aka samu a tsibirin Attu.

Duk abin da ya, amma Steller ta teku saniya da aka shafe ta mutum. Daga cikin tsari na sirens yau har yanzu akwai manatees da dugongs, amma su ne a kan gab da nau'i nau'i. Constant farautar, ruwa gurbatawa, canje-canje a cikin halitta habitats, m raunin daga jiragen ruwa - duk wannan a kowace shekara rage yawan wadannan m dabbobi.