UMary Allen
Intshayelelo: I-Anatomy of Shark
Ookrebe zizidalwa ezibangel’ umdla eziye zathimba iingqondo zabantu kangangeenkulungwane. Ziyaziwa ngemizimba yazo ethambileyo, amazinyo abukhali, kunye nemihlathi enamandla. Nangona kunjalo, i-anatomy kakrebe idlulela ngaphaya kwezi mpawu. Ookrebe baneenkqubo ezikhethekileyo zokuziva, kubandakanywa amehlo abo, iigill, kunye ne-ampullae yaseLorenzini. Ukongezelela, ookrebe banempumlo ekhethekileyo ebanceda babone ixhoba baze bahambe kwindawo abakuyo.
Ukuma kwamehlo kaShaka
Amehlo kakrebe abekwe emacaleni entloko yakhe. Oku kume kuvumela ukrebe ukuba abe nombono obanzi, nto leyo eluncedo ekubhaqeni ixhoba nasekuphepheni amarhamncwa. Ookrebe nabo banomaleko okhanyayo emva kweretina yabo ebizwa ngokuba yitapetum lucidum, ebavumela ukuba babone kwiimeko zokukhanya okuphantsi.
Indawo yeeGill zikaShaka
Ookrebe baneegill ezintlanu ukuya kwezisixhenxe emacaleni emizimba yabo. Ezi zikroba ziintunja eziya kumagumbi egill apho ukrebe ekhupha ioksijini emanzini. Iigill zigqunywe yi-flap ekhuselayo ebizwa ngokuba yi-operculum, enceda ukulawula ukuhamba kwamanzi phezu kweegill.
Umlomo Kakrebe: Ngaphambili okanye Phezulu?
Umlomo kakrebe ubekwe ngaphantsi kwentloko yakhe. Oku kuma kuvumela ukrebe ukuba ahlasele ixhoba esezantsi ngaphandle kokusibeka esichengeni isisu sakhe esisesichengeni. Noko ke, ezinye iindidi zookrebe, njengehammerhead, zinomlomo ophambi kwentloko yazo. Le ndawo ikhethekileyo yokumisa ibavumela ukuba babambe ixhoba elizifihle esantini.
Indlela Eyodwa Yokujoja kookrebe
Ookrebe banemvakalelo eyodwa yokujoja ebenza bakwazi ukubona ixhoba lisemgama. Zinezitho ezibini zokunuka ezisezintlokweni zazo ezikwaziyo ukubona ixabiso elincinci legazi kunye nezinye iikhemikhali emanzini. Esi zivamvo sokujoja sibukhali kangangokuba ezinye iindidi zookrebe zinokubona ixhoba kumgama ongaphezu kwekhilomitha.
Indima ye-Ampullae yaseLorenzini
Ookrebe nabo banenkqubo ekhethekileyo yeemvakalelo ebizwa ngokuba yi-ampullae yaseLorenzini. Le yimingxuma emincinane ekwintloko kakrebe ekwaziyo ukubona imisinga yombane emanzini. Le ngqiqo iluncedo ngakumbi ekubhaqeni ixhoba elizifihle esantini okanye kumanzi amdaka.
Ingxabano ejikeleze impumlo kakrebe
Kukho impikiswano malunga nendawo yempumlo kakrebe. Ezinye izazinzulu zikholelwa ukuba impumlo kakrebe iphambi kwentloko yakhe, ngoxa ezinye ziphikisa ngelithi ikwicala elingaphantsi kufutshane nomlomo. Le ngxoxo isaqhubeka, kodwa uphando lwakutsha nje lubonisa ukuba impumlo kakrebe ingaphantsi kwentloko yakhe.
Iindidi ezahlukeneyo zeempumlo zikaShaka
Ookrebe baneentlobo ngeentlobo zeempumlo zeempumlo ngokuxhomekeke kwiintlobo zabo kunye nendawo yokuhlala. Abanye ookrebe, abafana nomhlophe omkhulu, banempumlo etsolo yokunqumla emanzini. Ezinye, njengehammerhead, zinempumlo ethe tyaba ezinceda zibone ixhoba elizifihle esantini.
Indawo yeOlfactory Organs
Amalungu anukayo kakrebe afumaneka kumngxuma weempumlo kumzantsi wentloko yakhe. La malungu anoxanduva lokubona iimpawu zemichiza emanzini, kuquka nevumba lexhoba.
Ukubaluleka kweSensi yokuvumba kukaShaka
Ingqiqo yokuvumba ibalulekile kookrebe ekufumaneni ixhoba kunye nokukhangela indawo abakuyo. Ookrebe bayakwazi ukuva ivumba lexhoba besemgama, nto leyo ebanceda bafumane ukutya nakumanzi amaninzi avulekileyo.
Impembelelo yoMsebenzi woMntu ekuNxuleni kookrebe
Izinto ezenziwa ngabantu, ezinjengongcoliseko kunye nokuloba ngokugqithisileyo, kunokuba nefuthe elibonakalayo kwimvakalelo yokunuka kookrebe. Ungcoliseko lunokuphazamisa imichiza esemanzini, nto leyo eyenza kube nzima kookrebe ukubona ixhoba. Ukuloba ngokugqithisileyo nako kunokuphelisa ukutya kokrebe, nto leyo eyenza kube nzima ukuba baphile.
Ukuqukumbela: Ukuqonda impumlo kaShaka
Ukuqukumbela, impumlo kakrebe ibekwe ngaphantsi kwentloko yakhe kufutshane nomlomo. Inoxanduva lokubona imiqondiso yeekhemikhali emanzini, nto leyo ibalulekileyo ekufumaneni ixhoba kunye nokujonga indawo elingqongileyo. Isivamvo sokunusa sesinye seenkqubo ezininzi ezikhethekileyo abanazo ookrebe, nto leyo ebenza babe zizidalwa ezibangel’ umdla ukufunda nokuzincoma.