Hakkin Layard mai haƙori (Mesoplodon layardii) ko ƙyalen ƙugu mai ɗamara mai ɗamara.
Yada Belttooth na Layard
Belt ɗin Layard yana da ci gaba mai iyaka a cikin ruwan sanyi mai ƙarancin Kudancin Kasan, mafi yawa tsakanin 35 ° da 60 ° C. Kamar kowane ƙirar ƙirar ruwa, ana samunta da farko a cikin zurfin ruwa daga ƙarshen shiryayyun nahiyoyi.
An rarraba a bakin tekun Argentina (Cordoba, Tierra del Fuego). Tana zaune a yankin ruwa kusa da Ostiraliya (New South Wales, Tasmania, Queensland, South da Western Australia, Victoria). Layard's beltooth yana nan cikin ruwan Brazil, Chile, kusa da tsibirin Falkland (Malvinas) da kuma yankunan kudancin Faransa (Kerguelen). Hakanan yana zaune a cikin ruwan Heard da McDonald Islands, New Zealand, kusa da gabar Afirka ta Kudu.
Alamomin waje na belin belin Layard
Belt ɗin Layard yana da tsayin jiki na mita 5 zuwa 6.2. Yawansa yakai 907 - 2721 kg. Ana haihuwar jarirai da tsawon mita 2.5 zuwa 3, kuma ba a san nauyinsu ba.
Belin Layard na da jiki mai siffa mai lanƙwaso tare da zagaye, gefuna masu kaɗan-kaɗan. Akwai dogon hanci siriri a ƙarshen. Fananan ƙananan ƙananan, kunkuntar da zagaye. Finarshen dorsal ya faɗaɗa nesa kuma yana da jinjirin wata. Launin fatar yafi yawan launin shuɗi-baƙi, wani lokacin kuma launin shuɗi mai duhu wanda aka lulluɓe da fari a ƙasan, tsakanin zanin, a gaban jiki da kewaye kai. Hakanan akwai tabo baƙaƙe sama da idanuwa da kuma kan goshin.
Mafi kyawun yanayin yanayin ɗabi'ar Layard's beltooth ɗaya ne na molar, wanda ana samun sa ne kawai a cikin mazan maza. Wadannan hakoran suna kan karkatarwa ta sama ta karkace kuma sun bada damar bude bakin ne kawai fadin cm 11 - 13. An dauka cewa wadannan hakoran sun zama dole ne domin sanya raunuka a kan abokan hamayya, tunda a maza ne ake samun adadi mai yawa.
Sake bugun belin Layard
Ba a san komai game da halayyar haihuwa na ɗakunan ɗakunan Layard.
An yi amannar cewa dabbar tana faruwa a lokacin bazara, jarirai sabbin haihuwa suna bayyana a ƙarshen bazara, farkon kaka bayan watanni 9 zuwa 12 na ciki. Lambun katako na Layard sau ɗaya a shekara. Babu wani bayani game da kulawar iyaye ga zuriyarsu. Kamar kowane jarirai, Whales da dolphins, san kwiyakwi suna shayar da madara, ba a san tsawon lokacin ciyarwar ba. Yaran da aka haifa suna iya bin mahaifiyarsu tun daga haihuwa. Matsayin namiji a cikin iyali bai bayyana ba.
Tsawon rayuwar La-bel din-hakorinta a bayyane yake da na wakilan wasu jinsin halittu, daga shekaru 27 zuwa 48.
Abubuwan ɗabi'u na ɗakunan ɗakunan Layard
Layard's Straptooth yakan yi nesa da gamuwa da jiragen ruwa, don haka ba safai ake ganin su a cikin daji ba. Dabbobin teku suna nutsuwa a hankali ƙasa da saman ruwa kuma suna hawa zuwa saman sai bayan mita 150 - 250. Nutsewar galibi takan dauki mintuna 10-15.
Ana tsammanin manyan haƙoran canine a cikin mazan da suka manyanta suna da mahimmanci don sadarwa ko gani. Sauran haƙoran haƙoran suna amfani da maimaitawar wuri, kuma wataƙila belin Layard shima yana da wasu nau'ikan hanyoyin sadarwa a cikin jinsunan.
Leyard's Belttooth Power
Babban abincin Layard's belttooth ya ƙunshi nau'ikan ashirin da huɗu na kifin teku, da kuma wasu kifaye masu zurfin teku. Abun mamaki da ruɗarwa yana haifar da kasancewar ƙara girman ƙashin muƙamuƙi a cikin maza. Da farko an yi imani da cewa yana tsoma baki tare da ciyarwa, amma, a bayyane yake, akasin haka gaskiya ne. Wannan kayan aiki ne masu mahimmanci don samun abinci cikin maƙogwaro. Amma wannan tunanin ana sanya shi cikin tambaya, saboda yana da yuwuwar cewa ɗakunan ɗakunan Layard kawai su tsotse abinci a cikin bakinsu, komai nisan da zasu iya buɗe shi.
Abokan gaba na Layard's Belttooth
Yardan katako na Layard na iya faɗawa cikin whale masu kisa
Matsayin yanayin halittu na bel ɗin Layard
Masu wanke-wanke na Layard suna ciyar da wasu nau'ikan halittun ruwa, don haka da alama suna iya shafar yawan wadannan kwayoyin.
Dalilan raguwar adadin belin Layard
Babu wani bayani game da ɗimbin ɗamarar ɗakunan Layard ko yanayin da ke cikin wannan nau'in. Waɗannan dabbobin da ke cikin ruwa ba a ɗauke su baƙon abu, amma suna iya fuskantar haɗari ga ƙananan matakan kuma wataƙila za su iya fuskantar raunin 30% na duniya sama da ƙarni uku. Ba a tantance yanayin jinsin a yanayi, amma idan aka yi la'akari da yawan belin da aka jefar a gabar tekun, mai yiwuwa wannan ba jinsin halittu ba ne idan aka kwatanta shi da sauran dangi.
Kamar kowane ƙirar ƙirar beha, suna ciyarwa galibi a cikin zurfin ruwa daga ƙarshen shiryayyen nahiyoyi.
Abincin abincin ya ƙunshi kusan gaba ɗaya daga cikin kwarin teku mai rai mai zurfin gaske. Babu farauta kai tsaye ga belin belin Layard. Amma kamun kifin da ke yaduwa a cikin teku ya haifar da damuwa cewa wasu kifayen suna kama tarko. Koda ƙananan matakan kamawa na waɗannan dabbobin da ke cikin ruwa na iya haifar da tasiri a kan wannan rukuni na ƙananan dabbobi.
Mesoplodon layardii jinsi ne da ke fuskantar barazanar iri iri:
- yiwuwar kutsawa cikin hanyoyin sadarwa da sauran cibiyoyin sadarwa;
- gasar daga masunta don kamawa, musamman squid;
- gurɓatar da yanayin ruwa da kuma tarawar DDT da PCb a cikin kyallen takarda;
- gurɓataccen hayaƙi a cikin Ostiraliya;
- mutuwar dabbobi daga kayan robobi da aka zubar.
Wannan nau'ikan, kamar sauran kifayen teku masu ruwa, ana sanya su cikin tasirin anthropogenic ta sauti mai ƙarfi, waɗanda ake amfani da su ta hanyar hydroacoustic da kuma girgizar ƙasa.
A cikin ruwan sanyi - mai matsakaici, haƙarƙarin haƙori na Layard yana da sauƙin tasirin canjin yanayi, saboda dumamar teku na iya sauyawa ko kuma taƙaita kewayon jinsunan, tunda dabbobin ruwa suna rayuwa cikin ruwa tare da wani yanayin zafin jiki. Ba a san tasirin wannan girman da sakamakonsa ga wannan nau'in ba.
Matsayin kiyayewa na belin belin Layard
Abubuwan da aka hango na canjin yanayi na duniya game da yanayin ruwa na iya shafar belin Layard, kodayake ba a fahimci yanayin wannan tasirin sosai ba. An sanya nau'in a cikin CITES Shafi na II. Ana buƙatar bincike don ƙayyade tasirin barazanar da ke tattare da wannan nau'in.
A shekarar 1982, aka kirkiro da wani tsari na kasa da kasa don gudanar da bincike dan gano musabbabin kifayen da ke cikin whale. Wani yanki don kiyaye belin Layard shine haɓaka yarjejeniyoyi don kare dabbobi da mazaunan su a duniya.
https://www.youtube.com/watch?v=9ZE6UFD5q74
