Isilwane narwhal Isilwane esincelisayo sasolwandle somndeni we-narwhal. Kungokwe-oda lama-cetaceans. Lesi yisilwane esiphawuleka kakhulu. AmaNarwhals adumisa udumo ngokuba khona kophondo olude (umuthi). Ingamamitha amathathu ubude futhi inamathela ngqo emlonyeni.
Ukubukeka kwe-Narwhal nezici
I-narwhal yabantu abadala ifinyelela kubude obungamamitha ayi-4.5, nethole amamitha ayi-1.5. Kulokhu, abesilisa banesisindo esingaba amathani ayi-1.5, nabesifazane - ama-900 kg. Ingxenye engaphezu kwesigamu sesisindo sesilwane yakhiwe ngamadiphozithi amafutha. Ngaphandle, ama-narwhal afana ne-belugas.
Isici esivelele se-narwhal ukuba khona komuthi, okuvame ukubizwa ngokuthi uphondo. Izindlovu zinesisindo esingaba ngu-10 kg. Izimpondo uqobo zinamandla amakhulu futhi zingagoba ezinhlangothini ibanga elingu-30 cm.
Kuze kube manje, imisebenzi yamabamba ayikacwaningwa ngokuqinisekile. Phambilini bekucatshangwa ukuthi i-narwhal iyayidinga ukuze ihlasele isisulu, nokuthi isilwane sikwazi ukudabula uqweqwe lweqhwa. Kepha isayensi yanamuhla ikufakazisile ukungabi bikho kwalomqondo. Kuneminye imibono emibili:
Ibamba lisiza abesilisa ekuheheni abesifazane ngesikhathi semidlalo yokukhwelana, njengoba ama-narwhals ethanda ukugcobana izindondo zawo komunye nomunye. Yize, ngokuya ngomunye umbono, ama-narwhals ahlikihla ngezimpondo ukuwahlanza ekukhuleni nasezimalini ezahlukahlukene zamaminerali. Futhi, amazinyo adingeka kwabesilisa phakathi nemincintiswano yokuhlangana.
UNarwhal Tusk - Lesi isitho esibucayi kakhulu, ebusweni baso kunemiphetho eminingi yezinzwa, ngakho-ke umbono wesibili ngukuthi isilwane sidinga umuthi wokunquma izinga lokushisa kwamanzi, ingcindezi yezemvelo, nobuningi bamandla kagesi. Uxwayisa nezihlobo ngengozi.
Ama-Narwhal abonakala ngokuzungeza kwekhanda, amehlo amancane, ibunzi elikhulu elikhulu, umlomo omncane, ophansi. Umthunzi womzimba ulula kancane kunomthunzi wekhanda. Isisu siyakhanya. Emuva nasezinhlangothini zesilwane kunezindawo eziningi ezimpunga nsundu.
Ama-Narwhal awunawo amazinyo. Umhlathi ongaphezulu kuphela onama-anlage amabili. Kwabesilisa, ngokuhamba kwesikhathi, izinyo langakwesobunxele liphenduka ibele. Njengoba ikhula, ihlaba udebe lwayo lwaphezulu.
Amazinyo agobeka ngokwewashi futhi acishe afane nesikulufu sikakhokho. Ososayensi abakaze bathole ukuthi kungani umbuna ukhula ohlangothini lwesobunxele. Lokhu kuhlala kuyimfihlakalo engaqondakali. Ezimweni ezingavamile, womabili amazinyo e-narwhal angashintsha abe izimpondo. Ngemuva kwalokho kuzoba nezimpondo ezimbili, njengoba kubonakala ku isithombe sesilwane narwhal.
Izinyo langakwesokudla kuma-narwhal lifihliwe ku-gum engenhla futhi alinawo umthelela empilweni yesilwane. Kodwa-ke, kungenzeka ukuthi isayensi iyakwazi lokho uma ulwandle unicorn narwhal yephula uphondo lwayo, lapho-ke inxeba elisendaweni yalo lizoqiniswa ngezicubu zethambo, futhi uphondo olusha ngeke lukhule kuleyo ndawo.
Izilwane ezinjalo ziyaqhubeka nokuphila impilo ephelele ngaphandle kokukhathazeka ngokuntuleka kophondo. Esinye isici isilwane sasolwandle narwhal Ngabe ukungabi khona kwe-dorsal fin. Ibhukuda ngosizo lwamaphiko asemaceleni nomsila onamandla.
Indawo yokuhlala yeNarwhal
Ama-Narwhals yizilwane zase-Arctic. Kuyindawo ebandayo echaza ubukhona bengqimba enkulu yamafutha angaphansi kwalezi zilwane. Izindawo eziyizintandokazi zalezi zilwane ezincelisayo ezivamile amanzi e-Arctic Ocean, indawo yeCanada Arctic Archipelago naseGreenland, eduze kwaseNovaya Zemlya naseFranz Josef Land. Ngenkathi ebandayo, zitholakala olwandle olumhlophe nolwaseBerengo.
Imvelo nendlela yokuphila yenarwhal
Ama-Narwhals yizindawo zokuvuleka phakathi kweqhwa. Ekwindla i-arctic ama-unicorn narwhals fudukela eningizimu. Bathola izimbobo eqhweni ezivale amanzi. Umhlambi wonke wama-narwhal uphefumula ngalezi zimbobo. Uma imbobo imbozwe yiqhwa, khona-ke abesilisa baphula iqhwa ngamakhanda abo. Ehlobo, izilwane, kunalokho, ziya ngasenyakatho.
I-narwhal izwa kahle ekujuleni kwamamitha ayi-500. Ekujuleni kolwandle, i-narwhal ingaba ngaphandle komoya imizuzu engu-25. Ama-Narwhals yizilwane ezifuywayo. Bakha imihlambi emincane: 6-10 umuntu ngamunye. Baxhumana nemisindo, njengama-belugas. Izitha zezilwane zase-Arctic yimikhomo ebulalayo kanye namabhere we-polar; oshaka be-polar bayingozi kumawundlu.
Ukudla kweNarwhal
Ama-unicorn asolwandle adla izinhlobo zezinhlanzi zasolwandle olujulile njenge-halibut, i-polar cod, i-Arctic cod ne-redfish. Babuye bathande ama-cephalopods, ama-squid nama-crustaceans. Zizingela ngokujula kwekhilomitha elilodwa.
Kukholakala ukuthi amazinyo asebenzayo enarwhal asetshenziselwa ukuncela ngaphakathi nangaphandle kwendiza yamanzi. Lokhu kwenza ukuthi kube lula ukukhipha inyamazane, njenge-shellfish noma izinhlanzi ezingezansi. AmaNarwhal anezintamo eziguquguqukayo, eziwavumela ukuthi ahlole izindawo ezinkulu futhi abambe inyamazane ehambayo.
Ukukhiqizwa kabusha nokulindelwa kwempilo yenarwhal
Ukuzala kulezi zilwane ezincelisayo kuhamba kancane. Banokuvuthwa ngokocansi lapho befika eminyakeni emihlanu. Isikhathi seminyaka emithathu siyabonakala phakathi kokuzalwa. Isikhathi sokukhwelana siyintwasahlobo. Ukukhulelwa kuthatha izinyanga eziyi-15.3. Njengomthetho, ama-unicorn abesifazane asolwandle abeletha izinyane elilodwa, kuyaqabukela kube mabili. Amathole makhulu ngosayizi, ubude bawo bungamamitha ayi-1.5.
Ngemuva kokubeletha, abesifazane bahlanganiswa emhlambini ohlukile (abantu abangu-10-15). Abesilisa bahlala emhlambini ohlukile (abantu abangu-10-12). Isikhathi sokuncelisa asaziwa ncamashi ososayensi. Kepha kucatshangwa ukuthi, njengalezo ze-belugas, cishe izinyanga ezingama-20. Ukulingisa kwenzeka endaweni yesisu nesisu. Amantshontsho azalwa engumsila kuqala.
UNarwhal Isilwane esithanda inkululeko. Enkululekweni, ibonakala ngokuphila isikhathi eside, cishe iminyaka engama-55. Azihlali ekuthunjweni. I-narwhal iqala ukubuna futhi ife phakathi kwamasonto ambalwa. Isikhathi esiphezulu sempilo ye-narwhal ekuthunjweni kwakuyizinyanga ezi-4. AmaNarwhals awakaze azale ekuthunjweni.
Ngakho-ke, ama-narwhals ahlala ngokuthula emanzini ase-Arctic, adla izinhlanzi nezimbaza. Zibamba iqhaza emkhakheni wezinto eziphilayo, ngokuba izilwane zasendle ezinjengama-nematode nezintwala zomkhomo. Lezi zilwane ezincelisayo kade zaba ukudla okuyinhloko kubantu base-Arctic. Manje ama-narwhal abhalwe ku-Red Book futhi avikelwe ngumthetho.
