Isiphi isilwane esikhulu kunazo zonke emhlabeni?

Eplanethini yethu namuhla sinezinhlobonhlobo zezinto eziphilayo ezinhle kakhulu. Lezi zinhlobonhlobo zezinto eziphilayo zakhiwe izilwane zabo bonke osayizi. Abantu bahlukanisa izilwane ngokwezici zazo nangemvelaphi yazo. Nokho, omunye wemibuzo abantu abayibuza kakhulu ngezilwane uwukuthi isiphi isilwane esikhulu kunazo zonke emhlabeni

Ngakho-ke, kulesi sihloko sizokutshela ukuthi yisiphi isilwane esikhulu kunazo zonke emhlabeni, izici zayo nokunye okuningi.

Isiphi isilwane esikhulu kunazo zonke emhlabeni

Isilwane esikhulu kunazo zonke emhlabeni i-blue whale. Lesi silwane esincelisayo sasolwandle esibabazekayo singafinyelela ubude obungamamitha angu-30 futhi sibe nesisindo esingaphezu kwamathani ayi-150. Wawumkhulu kangangokuthi kukholakala ukuthi wawuyisilwane esikhulu kunazo zonke ezake zaba khona eMhlabeni. Imikhomo eluhlaza okwesibhakabhaka itholakala olwandle emhlabeni jikelele futhi idla ngokuyinhloko i-krill, i-crustacean encane.

Ngaphezu kobukhulu bayo obukhulu, imikhomo eluhlaza okwesibhakabhaka nayo iyaziwa ngezingoma zayo ezihlaba umxhwele. Abesilisa bakhiqiza uchungechunge lwemisindo eyinkimbinkimbi futhi ehlukile, efana nezingoma. Le misindo izwakala kuze kufike kumakhilomitha angu-100 futhi isetshenziselwa ukuxhumana nokuthola umlingani ngesikhathi sokukhwelana.

Ngeshwa ngenxa yokuzingela ngokweqile esikhathini esidlule, imikhomo eluhlaza okwesibhakabhaka isengozini yokushabalala. Ngenhlanhla, ukuvikela kwabo sekuyinto ehamba phambili ezinhlanganweni nohulumeni abahlukahlukene. Kumanje kuthathwa izinyathelo zokulondoloza imvelo emhlabeni wonke ukuze kuvikelwe futhi kuphinde kwakhiwe imikhomo eluhlaza okwesibhakabhaka.

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Imibandela yokwahlulela ubukhulu bezilwane

Ubukhulu bezilwane bunganqunywa kusetshenziswa imibandela ehlukene, evame kakhulu isisindo, ubude nobude. Lezi zimo zingahluka kuye ngohlobo lwesilwane esihlolwayo.

Ukunquma isisindo sesilwane, isikali esifanele ubukhulu nezinhlobo zesilwane singasetshenziswa. Kubalulekile ukuqinisekisa ukuthi isilwane sisesimweni esithokomele futhi esiphephile ngenkathi ikalwa. Kunconywa ukuthatha izilinganiso ezimbalwa futhi ubale isilinganiso ukuze uthole imiphumela enembe kakhulu.

Ubude nobude besilwane kungalinganiswa ngethuluzi lokulinganisa elifanele, njenge-tape measure eguquguqukayo. Ngokuqondene nokuphakama, kufanele kukalwe ukusuka phansi kuya endaweni ephakeme kakhulu yesilwane, ngokuvamile ikhanda noma amahlombe. Mayelana nobude, bungalinganiswa kusukela ekupheleni kwekhanda kuze kube sekupheleni komsila noma ekupheleni komzimba, kuye ngezinhlobo.

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Ukubaluleka kokulinganisa nokuhlukanisa ubukhulu bezilwane

Ukulinganisa nokuhlukanisa ubukhulu bezilwane kuwumsebenzi obalulekile ekuqondeni ukwehlukahlukana kwempilo eMhlabeni. Ngaphezu kokuba isici esibalulekile sebhayoloji nesayensi yezilwane, lolu lwazi lubalulekile nasekufundeni ukusebenzisana phakathi kwezinhlobo zezilwane, ukonga ukuhlukahluka kwemvelo, nokuqapha inani labantu. Ngezansi kukhona ezinye izindlela namathuluzi okwenza lo msebenzi ngokunembile nangempumelelo.

Enye yezindlela ezijwayeleke kakhulu zokukala ubukhulu bezilwane ngu ubude bomzimba. Ukuze uthole lesi silinganiso, izinyathelo ezithile kufanele zilandelwe: 1) beka isilwane endaweni eyisicaba bese welula endaweni yaso yemvelo, 2) sebenzisa ukulinganisa kwetheyiphu eguquguqukayo ukuze ulinganise kusukela ekhaleni noma ekugcineni kwekhanda kuya phansi komsila noma ekugcineni komzimba, 3) qopha isilinganiso kuyunithi efanelekile yobude, njengamasentimitha noma amamitha. Kubalulekile ukuthatha izilinganiso ezimbalwa futhi ubale isilinganiso ukuze uthole imiphumela enembe kakhulu.

Mayelana nokuhlukaniswa kobukhulu bezilwane, kusetshenziswa izindlela ezehlukene ngokweqembu le-taxonomic kanye nenjongo yocwaningo. Ezinye izici okufanele zicatshangelwe zihlanganisa: 1) isisindo somzimba, 2) amaphiko noma izitho zomzimba, 3) ukuphakama lapho kubuna, 4) ubukhulu bogebhezi, njll Izikali zokugreda zivame ukusetshenziswa, okuvumela izilwane ukuthi zinikezwe izigaba ezithile ngokusekelwe kusayizi wazo olinganiselwe. Lezi zigaba zingahluka kuye ngezinhlobo ezihilelekile, ngakho-ke kuyadingeka ukubonisana nomthombo othembekile nochwepheshe.

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Isilwane esikhulu kunazo zonke emhlabeni: i-blue whale

I-blue whale, ngokwesayensi eyaziwa ngokuthi i-Balaenoptera musculus, iyisilwane esikhulu kunazo zonke emhlabeni. Lezi zidalwa ezinkulu zingafinyelela ubude obungamamitha angu-30 futhi zibe nesisindo esingamathani angu-180. Ubukhulu bayo buyamangaza, budlula noma iyiphi enye into ephilayo, ngisho nezibankwakazi.

Imizimba yazo ijwayela ukuphila kwasemanzini futhi ukuma kwazo kwe-aerodynamic kuzivumela ukuthi zihambe kalula olwandle. Isikhumba sazo ngokuvamile siluhlaza okwesibhakabhaka-mpunga namachashaza alula engxenyeni engezansi yomzimba. Futhi banekhanda elikhulu nomlomo omkhulu oqukethe amapuleti e-baleen angaba ngu-300, abawasebenzisela ukuhlunga amanzi amaningi futhi babambe izilwane ezincane ezifana ne-krill, umthombo wabo wokudla oyinhloko.

I-blue whale isilwane esifudukayo esikwazi ukuhamba amabanga amade sifuna ukudla. Zihamba izinkulungwane zamakhilomitha phakathi kwezindawo zokuphakela amanzi abandayo kanye nezindawo ezizalela kuzo ezindaweni ezishisayo. Nakuba ziyizilwane ezihlala zodwa, ngezinye izikhathi zihlangana ngamaqembu amancane ngesikhathi sokuzala. Kodwa-ke, ngenxa yokuzingela ngokweqile esikhathini esidlule, inani lemikhomo eluhlaza okwesibhakabhaka liye lancipha kakhulu futhi okwamanje livikelwe yimithetho ehlukahlukene kanye nezivumelwano zamazwe ngamazwe.

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Izici zomzimba kanye ne-anatomy ye-blue whales

Umkhomo uyisilwane esincelisayo sasolwandle esikhulu kunazo zonke nesisinda kunazo zonke emhlabeni. Ubukhulu bayo bungafinyelela kumamitha angama-30 ubude futhi nesisindo esingaphezu kwamathani ayi-120. Inomzimba oyisilinda obude onekhanda elikhulu elenza cishe amaphesenti angama-25 obude bayo bonke. Amaphiko ayo asesifubeni made futhi aminyene, afinyelela kumamitha angu-5 ubude.

Imikhomo eluhlaza okwesibhakabhaka inombala osuka koluhlaza okwesibhakabhaka ukuya kompunga, nakuba ingase ibe namachashaza akhanyayo ngaphansi kwemizimba yawo. Lezi zilwane ezincelisayo zasemanzini zinongqimba lwamafutha olubizwa ngokuthi ama-blubber azivikela emanzini abandayo futhi azisize zihlale zintanta. Isikhumba sazo sibushelelezi futhi sinwebeka, ngaphandle kwama-calluses ambalwa phezulu emakhanda azo nangaphambili lomlomo wazo.

I-anatomy ye-blue whale iveza izici ezithile ezingavamile. Ngokwesibonelo, ikhanda layo linolwembu oluyivumela ukuba ihlunge amanzi amaningi ukuze ibambe ukudla kwayo okuyinhloko. Ngaphandle kwalokho, umphimbo wabo unochungechunge lokugoqa kwe-ventral okubizwa ngokuthi "ama-throat grooves" okunganwebeka ukuze kuvunyelwe ukuthathwa kwamanzi amaningi nokudla.

Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nokuthi yisiphi isilwane esikhulu kunazo zonke emhlabeni kanye nezici zaso.