Namhlanje siza kuthetha malunga neentlobo ezincinci ezaziwayo nezingaqhelekanga zikakrebe. Ngokungafaniyo nookrebe esikuqhelileyo ukuhlalutya, i-morphology kunye nendlela yokuphila yolu hlobo yahluke ngokupheleleyo. Sithetha ngayo inyoka yokrebe. NgesiNgesi yaziwa ngegama le-viper dogfish. Eli gama linokuguqulelwa kwi-Spanish njenge-quelvacho vibora. Igama layo lenzululwazi nguTrigonognathus kabeyai kwaye yafunyanwa ngo-1990, eyenza ukuba ibe yenye yezona ndidi zale mihla nezingaziwayo ukuza kuthi ga ngoku.
Kule nqaku siza kufumanisa ezinye zeemfihlelo ezinzulu zenyoka yenyoka.
Iimpawu eziphambili
Kude kube namhla, ulwazi oluncinci kakhulu luyafumaneka malunga nonyoka lwenyoka. Inani leemodeli ezifakiweyo alifikeleli kumashumi amahlanu. Kukubanjwa ngengozi okwenzeka kwindawo yokuloba yohlobo lwe-purse-seine kwiindawo ezivulekileyo kwiindawo ezahlukeneyo zePasifiki. Ngokukodwa, amanxweme aseJapan naseHawaii ziindawo ekukuphela kwazo kwiplanethi apho inyoka yenyoka ibanjiwe khona.
Yeyosapho i-Etmopteridae (i-odolo le-squaliformes). Olu sapho luyaziwa ngokuba ne-lantern shark ngenxa yobukho beefotophores kumphezulu womzimba. Ngale nto okanye kunokuchongwa ukuba bahlala ezinzulwini apho ukukhanya kwelanga kungonelanga kwaye bafuna ukukhanya kwezi fotophores. Banenkangeleko yomphambukeli, egqibeleleyo ukuba ngumlinganiswa ophambili wohlobo lwehlaya.
Inomzimba odibeneyo, i-cylindrical kunye neempiko ezincinci. Inemiphetho emibini yokujika komqolo kwaye akukho mva wokugqibela. Ulusu lwayo lumdaka mnyama ngentla kwaye lumnyama okwangoku olunamabala amnyama akhanyayo kwi-peduncle kunye nomsila wokugqibela.
Kwinxalenye yentloko apho kufumaneka khona iimpawu ezahlukileyo zesi silwanyana. Siqala ngomlomo omde kakhulu nomxinwa kwindawo yokuphela ngokungathi yinyoka. Umlomo unamazinyo amade agobileyo njengamazinyo. Amazinyo awachazi iarch njengazo zonke ezinye iintlobo, kodwa zimile okwe-V. I<em>viper shark yasinda ngokuveza imihlathi yayo ukuze ibambe ixhoba layo. Ndiyabulela kwisakhono sokwandisa umhlathi kunye nobude bamazinyo, unokutyiswa de peces amathambo kunye neecrustaceans eziginya ziphelele. Kuyaziwa ukuba amazinyo asetyenziselwa kuphela ukubethelela nokubamba ixhoba.
Uluhlu kunye nendawo yokuhlala yenyoka yokrebe
Nangona kungekho datha ingako ifumanekayo koluhlobo, yintoni enokusekwa ekubanjweni kusivumela ukuba sazi indawo yokuhlala. Siyazi ukuba ihlala emanzini anzulu ngakwithambeka elingaphezulu phakathi kweemitha ezingama-330-360 ubunzulu. Iimpawu ezingama-39 zibanjiwe eludinini ukusuka kwinqanaba lolwandle ukuya kuthi ga kwiimitha ezili-170 ubunzulu. Ezinye iisampulu ziye zafakwa kubunzulu beemitha ezili-1500. Oku kungabonisa ukuba yenza imfuduko eyahlukeneyo ethe nkqo ebusuku ukuze ibambe ixhoba layo.
Ngenxa yobunzulu bokutya okanye ukunqongophala, ke ngoko, kufuneka banyukele kumphezulu ukufumana ixhoba labo. Oku okanye, nangona kunjalo, ayinanto ngaphandle kokuqikelela. Indlela yobomi benyoka yokrebe ayaziwa kakhulu.
Ngokubhekisele kwibhayoloji yayo, kunzima kakhulu ukungqinisisa izinto kuba ulwazi olunalo malunga nalo lincinci.
Ukuzaliswa kweViper shark
Nangona kungaziwa kakuhle, kucingelwa ukuba sisilwanyana esingathandabuzekiyo se-viviparous. Amadoda aqala ukukhula xa ephakathi kwe-37 kunye ne-44 yeesentimitha ubude, ngelixa amabhinqa ejikeleze iisentimitha ezingama-44. Ubuncinci banokufikelela kubude beesentimitha ezingama-54. Njengokuba ngabalobi ngempazamo kubanjwa iisampulu, ulwazi oluninzi luya kufumaneka kwizazinzulu malunga nokukhula kwabo, indlela yabo yokuphila, ibhayoloji, njl.
Ekuphela kwento esinokuyithetha siqiniseke ngokupheleleyo kukuba kubunzulu bolwandle ubunzulu bezinto eziphilayo bukhulu kakhulu. Ingxaki ilele ekubeni ube nakho ukufunda nokwazi iindawo apho ukukhanya kwelanga kungafikeleli khona. Kubantu kunzima ukuphanda nzulu kukhulu kakhulu, kuba uxinzelelo lukhulu kwaye iindlela zinzima ngakumbi. Kungenzeka ukuba kukho iintlobo ezahlukeneyo zenyoka ekrelekrele kuba ezinye iisampulu ezithathwe eHawaii zibonisa ukungafani kwe-morphometric ngokubhekisele kwimizekelo ethathwe eJapan.
Ezinye iisampulu zafakwa eTaiwan eziye zaphela ukuya kuthi ga kwiiyure ezingama-24 emva kokushiya amanzi. Akukho nzima ukuba kwenziwe isifundo esivelisa ulwazi olunemiqathango malunga nebhayoloji yale krebe. Igama layo libangelwa kukufana kwayo kakhulu nenyoka. Ingathi yinyoka yaselwandle kodwa eneempawu zikakrebe.
Njengoko ubona, ubunzulu bolwandle abupheli busothusa. Ndiyathemba ukuba olu lwazi ungafunda ngakumbi malunga nonyoka lwenyoka.