Iindawo zokuhlala kunye nemimandla yokuhanjiswa
Ookrebe banokufunyanwa phantse kuzo zonke iilwandle neelwandle lwehlabathi. Nangona kunjalo, ukusabalalisa kwayo ngokwejografi kuyahluka ngokubanzi ngokuxhomekeke kwiintlobo ezithile. Abanye ookrebe bakhetha amanzi ashushu ashushu, ngelixa abanye befaneleka ngakumbi kumanzi abandayo olwandle lweArctic kunye ne-Antarctic. Kukwakho nookrebe abahlala kumanzi anebrackish, njengamachweba nemilomo yemilambo.
Ookrebe zizilwanyana eziguquguqukayo kakhulu kwaye zifumaneka kwiindawo ezininzi zokuhlala, ukusuka kumphezulu wolwandle ukuya kunzonzobila. Abanye ookrebe baphinda bathande iindawo eziselunxwemeni, ngelixa abanye bexhaphake kakhulu emanzini avulekileyo okanye ngaphandle konxweme.
Iintlobo zeTropiki kunye ne-subtropical
Amanzi ashushu kunye namanzi ashushu alikhaya leentlobo ngeentlobo zeentlobo zookrebe. Phakathi kwezona zilwanyana zaziwayo zikhetha ezi ndawo yi<em>tiger shark, i<em>hammerhead shark, ne<em>bull shark.
- Ingwe ekrebe: Olu hlobo ludla ngokufumaneka kufutshane nonxweme lweziqithi nakwiindawo ezineekorale kunye neingqaqa.
- I-Hammerhead ukrebe: Ikhetha iindawo ezinamanzi ashushu nangekho nzulu, yaye kuqhelekile ukuzifumana kufuphi nonxweme nakwiindonga zesanti.
- Bull ukrebe: Olu hlobo luyakwazi ukunyamezela amaqondo aphezulu etyuwa kwaye lufumaneka kumachweba asetropikhi naphantsi kwetropikhi, emilonyeni yemilambo, nakwiindawo eziselunxwemeni.
Iintlobo emanzini abandayo
Kwimimandla ebandayo, efana nolwandlekazi lweArctic kunye neAntarctic, ookrebe nabo bayavela. Iintlobo ezimbini eziphawulekayo kwezi ndawo yiGreenland sleeper shark kunye ne-basking shark.
- Greenland sleeper shark: Olu hlobo luhlala kumanzi abandayo oMntla weAtlantiki kunye neArctic, kwaye ilungiselelwe ngokukodwa ukumelana namaqondo obushushu aphantsi kakhulu.
- Sharking ukrebe: Nangona inokufumaneka nakumanzi afudumeleyo, i-basking shark ixhaphake ngokufumaneka kumanzi apholileyo oMntla weAtlantiki noLwandlekazi oluMazantsi.
Iintlobo zobunzulu benzonzobila
Ezinzulwini zolwandle, apho ukukhanya kwelanga kungafikeleliyo kwaye iimeko zinzima kakhulu, kusekho iindidi zookrebe ezikwazileyo ukuziqhelanisa. Ezimbini zezona ntlobo zaziwayo yi-eel shark kunye ne-shark enkulu yomlomo.
- Ukrebe kaEel: Olu hlobo luhlala kubunzulu obungaphezulu kwe-1,000 leemitha kwaye yaziwa ngomzimba walo omde kunye ne-dorsal fin eyandisa phantse ubude bomzimba wonke.
- umlomo omkhulu ukrebe: Lo krebe ungaqondakaliyo uhlala kubunzulu obuziimitha ezingama-600 ukuya kwi-1,500 kwaye waziwa ngokuthanda ukutya.
Izinto eziphembelela ukusasazwa kwayo
La usasazo lwejografi kookrebe iphenjelelwa zizinto ezininzi, eziquka ubushushu bamanzi, ubutyuwa, ukufumaneka kokutya, kunye nobukho bendawo yokuzalanisa kunye neendawo ezizalela kuzo.
Ukongeza, i ulondolozo ookrebe ngumba obalulekileyo ekufuneka uqwalaselwe. Ukuloba ngokugqithisileyo kunye nokuthotywa kweendawo zokuhlala kunokuchaphazela kakubi abantu bookrebe kwihlabathi jikelele.
Ukubaluleka kolondolozo
La ulondolozo ookrebe akuyimfuneko kuphela kwiindidi ezahlukeneyo, kodwa nokugcina ulungelelwano kwi-ecosystem yolwandle. Ezi zilwanyana zihlaselayo zidlala indima ebalulekileyo ekulawuleni i-ecosystem, njengoko zinceda ekulawuleni abemi bezinye iintlobo kunye nokugcina iyantlukwano yemfuza kwiindawo abahlala kuzo. Kubalulekile ukuzikhusela nokugcina iindawo zazo zokuhlala ukuze kuqinisekiswe ukuqhubeka kwezi zilwanyana zinomtsalane.