Duniya ta koya game da wanzuwar Dolphin kogin chinese kawai a cikin 1918. Bayan haka, kasa da shekara 100 sun isa su kawo wannan nau'in whales na yatsa don kammala lalata. Daɗaɗɗar bunƙasa ta ko'ina cikin ƙasar Sin, dabbar dolphin ta sami mafaka ta ƙarshe a cikin ruwayen Yangtze, Qiantang da maɓuɓɓugan Poyanghu da Din kusa. Dabbobi sun yi ƙaura daga nan Tekun Pacific shekaru dubu 20 da suka gabata. Sinawa sun girmama su a matsayin gumakan kogi, amma wannan bai ceci dabbobin daga halaka ba saboda gurbatar kogin, canje-canjen yanayi.
Dabbar shuɗi-fari tare da farin dabbar dolphins na ciki suna da ɗan ƙaramin ƙarancin launuka a cikin tutar da ɗan baki kaɗan. Suna son kasancewa cikin ruwa mai zurfi cikin ruwa mai wahala. Saboda wannan dalili, kuma fushinsu mai kauri na dolphins na kasar Sin an ambaci sunan "aladu na kogin." Tsawon jikin mutum bai wuce mita 2.5 ba, kuma nauyin yana tsakanin kilogram 120 zuwa 210. Wadannan dabbobi masu kwalliya baza su iya yin fahariya da kyakkyawar idanuwa ba, saboda haka, lokacin da suke farautar ƙananan kifaye, sun dogara ne da yanayin halittu. Abincin da aka fi so shine kifin kifi da dusar ƙanƙara, waɗanda dabbar dolpod ta haƙa a cikin kogin tare da dogon bek. Mafi sau da yawa, dabbobi suna rayuwa cikin nau'i-nau'i, da wuya a tattara su cikin rukuni na mutane 10. Wannan halittar tana da sirri sosai, tana kulawa da duk abin da ba a sani ba da taka tsan-tsan. Dabbar dolfin da aka ji rauni tana yin sauti mai sokin, yayi kama da kukan ɗan maraƙin maraƙi. Sake bugun "aladu na kogi" ba a fahimta. An san cewa yaransu suna da rauni kuma ba sa iya iyo. Tun daga haihuwa, uwa tana tallafawa jariri da ƙashinsa.
Kuma ba tare da samun lokaci don sanin wannan mamam ɗin mai ban mamaki ba, a cikin 2006 Dolphin kogin chinese da aka ayyana kare. Koyaya, daga baya kusan mutane 30 aka hango su. Dangane da binciken balaguro a shekarar 2012, an sanar da wannan nau'in dabbobin gaba daya. Masana kimiyyar suna fatan cewa wata rana dabbar dolfin kasar Sin za ta sake fitowa cikin daji, saboda duk kokarin da aka yi na tsare shi cikin fursunoni bai yi nasara ba.
Su waye suke dabbar dolphins
Ana amfani da mutane ga gaskiyar cewa dabbar dolfin mazaunin ruwa ne mai gishiri da kuma ruwan teku. Amma akwai wani ƙaramin iyali da ake kira Kogin Dolphins.
A yau akwai nau'ikan 4 na waɗannan cetaceans. Uku daga cikinsu suna rayuwa a cikin tsarkakakken ruwa, na huɗu kuma zai iya rayuwa cikin koguna da tafkuna, da kuma cikin teku. Abin takaici, waɗannan dabbobi masu haɗari ne. Suna shan wahala sosai saboda kusancinsu da mutane. Suna mutuwa saboda gurbatar ruwa ko kuma farauta mara kyau.
Bayyanar
Malwararren dabbobi masu shayarwa shine launin toka mai launin shuɗi mai launi, ciki wanda yake bakin ciki tare da azurfa - fararen tabarau. Jikin tsuntsayen dolphins ba su wuce mita biyu da rabi ba, kuma nauyin jikin zai iya kasancewa daga kilo arba'in da biyu zuwa ɗari da saba'in da saba'in.
Haka kuma, maza sunada karanci fiye da zababbun su. Siffar wannan nau'in itace karami ce mai tsayi da tsayi da yawa, tana kama da beak na crane. Tana da guda talatin da huɗu a saman sannan talatin da shida akan ƙasan hakora. Halin low hangen nesa.
Rayuwa
Ya zaɓi wurin zama a cikin bakin haraji, kusa da tsibirai da kuma cikin ruwa mai zurfi. Gabatar da cikin ruwa mai wahala godiya ga nutsuwa. Dolphins suna aiki da rana, kuma suna kwana a wurare tare da jinkirin hanya. Dabbar dolphin kogin kasar Sin tana cin abinci ne a kan mollusks da kananan kifaye, amma ba ta ki daga malala ko catfish ba.
Shi da kansa bashi da abokan gaba a yanayi. Ana iya ganin Dolphins nau'i-nau'i, kuma wani lokacin a cikin rukuni na mutane har goma sha shida. Za a iya nutse na ɗan gajeren lokaci, kawai har zuwa ashirin daƙiƙa. Ga jinsin a lokacin rani, ƙaura zuwa ƙananan tashoshi halaye ne, kuma a cikin hunturu sun koma wuraren da suka gabata.
Sakamakon gaskiyar cewa wannan nau'in ba a fahimta sosai, abin takaici, tsarin haifuwa, rayuwar rayuwa da ƙari zai kasance asara a garemu. Masana kimiyya suna yin zato bisa lafazin bayanan data mallaka a hannayensu. Mace ba ta yin fice sosai. Suna kawo cubaya sau ɗaya kuma ba fiye da sau ɗaya a cikin shekaru 2 ba. Mafi muni, lokacin haihuwar shine watanni 11. An haifi Cubs masu rauni sosai. Da farko, an tilasta mahaifiyar ta kiyaye su da ƙashin kanta. Ba a san takamaiman balaga ba. Dangane da zaton, wannan na iya faruwa tsakanin shekaru uku zuwa takwas.
Don nazarin wannan nau'in halittu na musamman, an yi ƙoƙari don adana dabbar dolfin a cikin bauta. Abin baƙin ciki, har ma da kusancin yanayi bai haifar da nasara ba.
Duk da girmamawar Sinawa da ake yiwa wadannan gumakan na kogin, sun kasa kiyaye kamanninsu mai ban mamaki. Babu shakka, canje-canje a yanayin canjin yanayi sun taka rawa a cikin wannan, amma gurɓatar koguna, magudanar ƙasa da rage kiwo, ya zama "mai mai".
Tsagewa
Dabbar dolfin ruwan kasar Sin ta lalace cikin sauri: a cikin shekara ta 1950, mutane kusan dubu 6 ne ke zaune a cikin ruwan Yangtze, kuma bayan shekaru 20, akwai daruruwan daga cikinsu.
Dalilin haka shine mummunan yunwar a China, lokacin da aka nemi dabbobin ruwa don cin nama. Hakan kuma ya biyo bayan tattalin arziƙi ma bai samar da alheri ga baiji ba. Tasirin kogin da mazaunanta ya zama mai girma: gurɓataccen masana'antu da hayaniya, jigilar kaya, gina madatsun ruwa. Har ila yau, aikin kamun kifi ya rinjayi: dabbobi masu shayarwa a cikin raga, suka mutu daga sandar kamun kifin. A sakamakon haka, a shekara ta 2006, balaguro na musamman da aka shirya bai sami dabbar dolphin kogin China ba a cikin Yangtze.
Kokarin kiyaye ra'ayin
Tabbas, masana kimiyya suna ƙoƙarin tseratar da nau'ikan dabbobi masu haɗari, amma game da dabbar dolphin na China, ba a sami nasara ba. Duk da gaskiyar cewa nau'in yana ƙarƙashin kariya kuma an jera su a cikin littafin Red, kusan babu dabbobi a cikin yanayin. An samo sabuwar shaida ta masunta gamuwa da wannan nau'in dolphins a cikin 2004. A shekara ta 2007, an tura balaguro don tara adadin maza da maza (kusan dabbobi 25). Wannan na iya bada izinin haifuwa cikin bauta tare da mayar da wasu alkalumma. Amma balaguron ya dawo ba tare da komai ba. Kayan aiki na zamani bai gyara baiji ba. Wannan yana haifar da ƙarshen abin bakin ciki: yawan dabbar dolphins ya mutu ya mutu kuma ba zai yuwu a maishe shi ba. Abun bakin ciki shine sanin hakan, amma tun 2007, dabbar dolfin kogin Sinawa ta zama hukuma ta zama wani nau'in halittar kare.
Menene sunan hade da
Yawan jama'ar karkara suna kiran dabbobi masu shayarwar "baiji". Dabbar dolfin kogin kasar Sin tana da kyawawan halaye na dorsal, mai kama da tuta. Wannan shine abin da ya ba da cikakkiyar suna ga duk nau'in halitta. Sunan kimiyya na nau'ikan Lipotes vexillifer. Ya hada da dabaru biyu. Leipo na nufin "an manta" kuma vexillifer na nufin "jigilar tutar ƙasa". Kamar yadda kake gani, masanan kimiyya sunyi amfani da ƙungiyoyi na waje lokacin da suka zaɓi suna don ƙaramin nau'in dabbobi masu shayarwa.
Duba bayanin
Wakilin ruwa mai kama da bakin ruwa na Whale, dabbar dolphin na kasar Sin, babban dabba ne. Matsakaicin jikin da aka yiwa rikicewa na dabba mai shayarwa ya kasance mita 2.5. Kuma mafi ƙarancin tsawon balaguro ya kai mita 1.5. Yawan dabba na dabba na iya kasancewa daga kilogiram 100 zuwa 160. Bayanin dabbar dolfin ba cikakken bayani bane. An sani cewa mace ta wannan nau'in sunada girma kuma sun wuce girman maza. Jikin dolphins mai tarin yawa ne. A wuya ne ta hannu. Fashin hancin na da da tushe, amma ana yanke su da gatari har zuwa ƙarshen. Alamar ƙyallen dorsal matsakaici ne a cikin girman, tare da zagaye na gaba da baya gefuna masu kyau. An samo ta ba daga tsakiyar baya ba, amma kusa da wutsiya.
A kan kambi na dabbobi masu shayarwa suna dauke da jijiyoyin jiki masu ɗorewa. Yana da ɗan ɗan lokaci farko zuwa hagu na cibiyar. Dabbar dolfin kogin China tana da wahalar gani. Idanunsa ba su da kyau sosai kuma suna zaune sosai. Suna da tsayi a kai, wanda ke rage kusurwar kallo.
Bangaren gaban kwakwalwar kwakwalwa shine abin da ake kira rostrum, kunkuntar kuma tayi girma. Yana lanƙwasa ɗan sama sama kuma yayi kama da baki mai garaje. Jajayen saman suna da ƙananan hakora fiye da na baya. Matsakaicin lamba a saman shine hakora 68, kuma akan ƙasa 72 hakora.
Ba shi yiwuwa a rubuta bayanin dabbar dolphin ba tare da ƙayyade launi na dabba ba. Baiji wani haske ne mai launin shuɗi ko launin shuɗi. Itace a cikin dabbobi fari ne. Kodayake wasu shaidun gani da ido suna da'awar cewa launi yafi haske fiye da bayanin hukuma. Sun ce dabbar dolphin na kasar Sin tana da fari fari.
Rarraba iri daban-daban
Mafi sau da yawa, ana samun wannan nau'in dabbar dolphin a cikin Kogin Yangtze. Idan ka ga yadda kogin Yangtze yake a taswira, zaku iya tunanin irin wannan kogunan cike yake da gudu. Tsawonsa ya wuce kilomita 6300, amma wannan bai ceci dabbar dolphin na kasar China ba daga barazanar lalata. Wani lokaci, waɗannan dabbobi masu shayarwa an samo su a cikin Qiantang (kogi) da Lakes Dongting da Poyanghu. An hango mutum daya a yankin Shanghai.
Yadda jinsin yake rayuwa da abinda yake ci
Yin nazarin salon rayuwar wannan nau'in yana da wahala. Sakamakon paucity, kusan babu bayanai. Abin sani kawai cewa dabbar dolphins zauna tare da nau'i biyu kuma sun fi son bakin kogin da ruwa mai bakin ruwa. Wataƙila, wannan shine ainihin dalilin mummunan ci gaban gabobin hangen nesa a cikin jinsin. Ruwan da ke nan koyaushe yana da gajimare, don haka idanu ba su da amfani, dole ne ka dogara da yanayin halittu.
Dabbar dolfin kogin China tana jagorantar rayuwar yau da kullun. A dare, ya tafi don yankuna tare da jinkirin hanya don shakatawa.
A cikin abincin abincin dabbobi masu shayarwa, ƙaramin kifi, daskararru, kifi mai kifi da kifayen kifi Don farauta, dabbar tana amfani da beak mai tsayi. Tare da taimakonsa, dabbar dolfin ta haƙa ganima daga ɓarna. Don murkushe ƙaho mai ƙarfi, yana amfani da hakora waɗanda aka keɓance su musamman don waɗannan manufofin.
Lokaci-lokaci, dabbar dolphins suna tarawa cikin rukuni. Irin wannan rukunin na iya ƙunshe da mutane 3, kuma yana iya adadin dabbobi 15. Amma wadannan tsari ba na zamani bane.
Kiwo
Akwai karancin bayani game da kiwo dabbar dolphins na kasar China. Masana kimiyya suna yin zato bisa lafazin bayanan data mallaka a hannayensu. Mace ba ta yin fice sosai. Suna kawo cubaya sau ɗaya kuma ba fiye da sau ɗaya a cikin shekaru 2 ba. Mafi muni, lokacin haihuwar shine watanni 11. An haifi Cubs masu rauni sosai. Da farko, an tilasta mahaifiyar ta kiyaye su da ƙashin kanta.
Ba a san takamaiman balaga ba. Dangane da zaton, wannan na iya faruwa tsakanin shekaru uku zuwa takwas.
