Izibonelo Zezilwane Ezi-Viviparous

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Ukukhulelwa ezilwaneni ezi-viviparous
Izibonelo zezilwane ezi-viviparous

I- izilwane ezi-viviparous yilezo ezibonakala ngokwakha umbungu ngaphakathi esibelethweni sikanina. Isib. unogwaja, inja, ihhashi.

Izidalwa eziphilayo ezinjengalezi zinokuhlukahluka kokukhiqiza kabusha ngendlela yezocansi. Lokhu kusho ukuthi owesifazane uvundiswa owesilisa uma efaka isidoda sakhe esibelethweni sakhe, futhi ngaleyo ndlela okubizwa ngokuthi umbungu kuqala ukukhula.

I- viviparous Ziyahlukahluka-ke ku-oviparous, okuyizilwane ezizalanayo zivela eqandeni, ezakhiwa endaweni engaphandle. Isibonelo salezi zilwane izinkukhu noma amajuba.

Ama-Ovoviviparous ahlukile, ngokulandelana, kunalawo wangaphambilini. Lezi zokugcina yizilwane inzalo yazo eqanduselwa eqandeni, kodwa leli qanda lihlala ngaphakathi komzimba wowesifazane kuze kube yilapho inzalo isikhule ngokuphelele. Isilwane esizala ngale ndlela yinyoka, ngaphezu kwezinhlanzi nezinye ezihuquzelayo.

Bhekafuthi: Ziyini izilwane ze-oviparous?

Ukukhulelwa ezilwaneni ezi-viviparous

I- isikhathi sokukhulelwa Inani lezinhlobo ze-viviparous ziyehluka ngokuya ngezinhlobo zazo futhi lokhu kuncike, phakathi kwezinye izinto, ngosayizi wesilwane. Lokho wukuthi, isikhathi sendlovu sizoba side kakhulu kunaleso segundane, ukuthatha isibonelo esisodwa.

Olunye udaba oluyehluka kuye ngesilwane yile inani lenzalo ukuthi owesifazane angakhulelwa njalo uma ekhulelwa. Isibonelo, unogwaja unezizukulwane eziningi kakhulu kunabantu.

Ezimweni eziningi, abasha bezilwane ezi-viviparous bakhula ku-placenta.Yilapho ingane ikwazi khona ukuziphakela izakhi kanye ne-oxygen edingekayo ukuze ihlale iphila futhi ithuthukise izitho zayo, kuze kube yilapho izalwa.

Kunoma ikuphi, ngaphakathi kwe-viviparous singabona iqembu elincane lezilwane, njengama-kangaroo noma ama-koalas, abizwa marsupials nokuthi zihluke kwezinye ngokunembile ngoba azinayo i-placenta. Esikhundleni salokho, ingane, ezalwa ingakhuli kahle, igcina ngokuzivumelanisa naleyo ebizwa ngokuthi "isikhwama semarsupial".

Ingakusebenzela: Izilwane ezidla inyama

Unogwaja: Isikhathi sakho sokukhulelwa, ngokuvamile, singaphansi kwezinsuku ezingama-30.
Indlulamithi: isikhathi sabo sokukhulelwa sihlala cishe izinyanga eziyi-15.
IndlovuLezi zilwane ezincelisayo zikhulelwa ezihlala phakathi kwezinyanga ezingama-21 kanye nezingama-22.
Ikati: isikhathi sokumitha salezi zilwane siphakathi kwezinsuku ezingama-60 nezingama-70, cishe.
Igundane: isilwane esinjengalesi asichithi izinsuku ezingaphezu kwezingu-20 esibelethweni.
Ilulwane: isikhathi sokukhulelwa kwalesi silwane siphakathi kwezinyanga ezintathu nezingu-6, kuya ngamacala.
Inja: Amaviki ayi-9 yilokho ukukhulelwa kwalezi zilwane kuhlala cishe.

Umkhomo: ukukhulelwa kwesilwane esinjengalesi kungathatha unyaka.
Bhele: ukukhulelwa kwalesi silwane sasendle kungathatha izinyanga eziyi-8.
Inyama yengulubeIsikhathi sokubeletha kwalesi silwane sasepulazini sinezinsuku eziyi-110.
Ihhashi: lezi zilwane zinokukhulelwa okuthatha cishe izinyanga eziyi-11 noma eziyi-12.
Inkomo: Ngaphambi kokubeletha, lesi silwanyana esinezilwane cishe sinezinsuku ezingama-280 sikhulelwe.
Izimvu: imvu kumele ibe nezinyanga ezinhlanu ikhulelwe ngaphambi kokubeletha amazinyane ayo.
UKoala: ukukhulelwa kukodwa kwalezi zimarsupials kuthatha cishe inyanga. Yize kufanele kucatshangwe ukuthi inzalo ayithuthukisiwe ngokuphelele, kepha iyaqhubeka nokwakheka esikhwameni se-marsupial.
ImfeneLezi zilwane zinesikhathi sokukhulelwa esihlala isikhathi esingaphansi kwezinyanga eziyi-9.
Ihlengethwa: lezi zilwane ezincelisayo zinenkathi yokukhulelwa ezungeze izinyanga eziyi-11.

I-Kangaroo: kulolu hlobo lwama-marsupials, ukukhulelwa kuhlala cishe ezinsukwini ezingama-40. Njengasendabeni ye-koala, ukukhula kwamaphuphu kwenzeka ngaphandle kwesibeletho, esikhwameni se-marsupial.
IChinchilla: isikhathi sokukhulelwa kwala magundane cishe izinsuku eziyi-110.
Imbongolo: ukukhulelwa kwalezi zilwane kuthatha cishe izinyanga eziyi-12.
Obhejane: ukukhulelwa kwalezi zilwane kungenye yezinde kakhulu, ngoba kungahlala unyaka nohhafu.

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