I-Whale Body Anatomy kunye nokulungelelanisa
Iminenga zizilwanyana zaselwandle ezinobukhulu obukhulu. Imizimba yabo ilungelelaniswe ngokugqibeleleyo kubomi baselwandle. Uphononongo lwe-anatomy yazo lutyhila ubukhulu bokuziqhelanisa nokusingqongileyo kolwandle.
Ukuqala, imilo yeminenga iyabanceda qubha ngokufanelekileyo emanzini. Ngokungafaniyo neentlanzi, iminenga inephiko lokudada elidlala indima ebalulekileyo ekuzinzeni ebudeni bokuqubha. Ukongeza, ulusu lwayo lugudileyo kwaye luqhelekileyo ukunciphisa ukuxhathisa kwamanzi.
Iminenga zizilwanyana ezanyisayo ezinegazi elishushu ezihlala kwindawo esoloko ibanda. Basebenzisa iindlela zokulungelelanisa ezifana amanqatha omzimba, ekwabizwa ngokuba yi-blubber, njenge-thermal insulation.
Iintlobo zeMinenga kunye noKwabiwa kwazo ngokweJografi
Kukho iintlobo ngeentlobo zeminenga enokufumaneka kwiilwandlekazi kwihlabathi jikelele. Ezi zahlulwe zaba ngamacandelwana amabini, iminenga yebaleen (mysticetes) kunye neminenga enamazinyo (odontocetes).
- Iminenga yeBaleen, njenge Umnenga oluhlaza kunye I-Humpback Whale, ziyaziwa ngezakhiwo zazo ze-baleen endaweni yamazinyo. Ezi zidalwa zifumaneka kuzo zonke iilwandle, ukusuka kwimimandla epholileyo ukuya kwiindawo ezishushu.
- Iminenga enamazinyo, njenge<em>sperm whale, inamazinyo okuzingela. Njengelona qela likhulu leecetaceans, zithe saa kulo lonke ihlabathi, ukusuka eArctic ukuya kwiAntarctic.
Ukutya kweWhale
Iminenga ngabathengi bamanqanaba aphezulu etrophic ezidlala indima ebalulekileyo kubume nakutshintsho lwenkqubo yendalo yaselwandle. Ngokuxhomekeke kwiintlobo zabo, iminenga ineendlela ezahlukeneyo zokutya, ezibonisa ukuhlukahluka kwazo.
Iminenga eneendevu ihluza izilwanyana ezincinci, ngakumbi ikrill, emanzini isebenzisa ibaleen yazo. Kwelinye icala, iminenga enamazinyo izizingela kwaye ukutya kwayo kubandakanya intlanzi, iskwidi kwaye ngamanye amaxesha nezinye izilwanyana zaselwandle.
Ukuziphatha kunye nokuVeliswa kweMinenga
Ukuziphatha komnenga kufundwa kwaye kuqondwe ngokubanzi. Nangona uhlala emanzini, iminenga ifuna ukuphefumla umoya kwaye inokubonwa ngokufuthi phezu komhlaba.
Ngokumalunga nokuzala, iminenga inesantya esicothayo sokuzala kunye namaxesha okumitha asusela kwiinyanga ezisi-9 ukuya kwezili-17. Ngokuqhelekileyo ziba nethole elinye, elaziwa ngokuba lithole. Kuyathakazelisa ukuqaphela ukuba iminenga ibonisa iqhina eliqinileyo lomama.
Impembelelo yeNdalo yeNdalo yeminenga
Indima ye iminenga kwi-ikhosistim yolwandle ibaluleke kakhulu. Ngokutya kwizinto eziphilayo ezikwinqanaba elisezantsi kunye nokuxhela amarhamncwa akwinqanaba eliphezulu, iminenga inceda ukugcina ulungelelwano lwekhonkco lokutya.
Ukongeza, iminenga ikwanegalelo kwimpilo ye-ecosystem ngokusebenzisa ilindle layo, elityebileyo nge-iron kunye nenitrogen, izondlo eziyimfuneko kwi-phytoplankton. Le nto yaziwa ngokuba "yintsimbi yokumpompa" kwaye inceda ekugcineni inani le-phytoplankton, ethi yona itshintshe utshintsho lwemozulu ngokufunxa i-atmospheric carbon dioxide.
Ngamafutshane, kuyabonakala ukuba iminenga, njengeentaka ezinkulu zolwandle, idlala indima ebalulekileyo kwizinto eziphilayo zaselwandle. Kubalulekile ukuba uluntu luthethelele ukukhuselwa nokugcinwa kwezi zilwanyana zanyisayo zibalaseleyo ukuze kuqinisekiswe impilo yeelwandle kwizizukulwana ezizayo.