Zamkati
Akuyerekeza kuti padziko lapansi pali mitundu ya nyama pafupifupi 2 miliyoni. Ena, ngati agalu kapena amphaka, titha kuwona pafupifupi tsiku lililonse m'mizinda ndipo zambiri zimadziwika za iwo, koma pali nyama zochepa wamba zomwe zimakhala ndi chidwi chambiri chomwe sitikudziwa.
Umu ndi momwe zilili ndi nyama za ovoviviparous, ali ndi mawonekedwe osiyana kwambiri pakubereka ndipo ali ndi mawonekedwe achilendo koma osangalatsa. Kuti mudziwe zambiri za nyama ndikudziwe zamtengo wapatali za nyamazo ovoviviparous nyama, zitsanzo ndi chidwi, pitirizani kuwerenga nkhaniyi PeritoAnimal.
Kodi nyama za ovoviviparous ndi chiyani?
Inu oviparous nyama, monga mbalame ndi zokwawa zambiri, zimaswana kudzera m'mazira omwe akazi amayikira m'chilengedwe (m'njira yomwe imadziwika kuti kuyala) ndipo, patatha nthawi yaying'ono, mazirawa amatuluka, ndikupatsa ana ndikuyamba moyo watsopano kunja.
US nyama zamoyo, ambiri ndi zinyama monga agalu kapena anthu, mazira amakula mkati mwa chiberekero cha amayi, kufikira kunja kudzera pakubereka.
Ndiye kuti nyama zamazira-viviparous amakula m'mazira omwe amapezeka mthupi la mayi. Mazirawa amathyola mkati mwa thupi la mayi ndipo panthawi yobadwa ana amabadwa, nthawi yomweyo kapena nthawi yayitali dzira likangotuluka.
Zachidziwikire, mudayamba mwamvapo funso: ndani adabwera koyamba, nkhuku kapena dzira? Nkhuku ikadakhala nyama yovoviviparous, yankho lake limakhala losavuta, ndiye kuti, nthawi imodzi. Kenako, tilembetsa ndi zitsanzo za nyama za ovoviviparous chidwi kwambiri.
Nyanja
Nyanja (Hippocampus) ndi chitsanzo cha nyama yochititsa chidwi kwambiri yovoviviparous, chifukwa amabadwa m'mazira omwe amakhala mkati mwa abambo. Pakati pa umuna, nyanjayi imasunthira mazirawo kwa amuna, omwe amawateteza m'thumba momwe, pambuyo pakukula kwakanthawi, amathyola ndipo ana amatuluka.
Koma sichokhacho chongofuna kudziwa za Mahatchi am'nyanja komanso, mosiyana ndi zomwe anthu ambiri amaganiza, si nyama zakutchire, monga nkhanu ndi nkhanu, koma nsomba. Chinanso chosangalatsa ndichakuti amatha kusintha mtundu kuti asokoneze nyama zowazungulira.
Zamgululi
Platypus (Matenda a Ornithorhynchus) akuchokera ku Australia ndi madera oyandikana nawo, amadziwika kuti ndi imodzi mwazinyama zodabwitsa kwambiri padziko lapansi, popeza ngakhale kuti ndi nyama yoyamwa imakhala ndi mlomo wofanana ndi bakha ndi mapazi a nsomba, osinthidwa kukhala moyo wam'madzi. M'malo mwake, akuti azungu oyamba omwe adawona nyamayi adaganiza kuti ndi nthabwala ndipo kuti wina akufuna kuwanyengerera poyika mulomo pa beaver kapena nyama ina yofananira nayo.
Alinso ndi chotupa cha bulu wakupha, kukhala imodzi mwa zinyama zochepa zoopsa zomwe zilipo. Komabe, ngakhale atatchulidwa kambirimbiri ngati chimodzi mwazitsanzo za nyama zokhala ndi ovoviviparous, platypus imayikira mazira koma saswa nthawi yomweyo ikagona.
Ngakhale zimachitika munthawi yochepa (pafupifupi milungu iwiri), nthawi yomwe mayi amasamira mazira pachisa. Akasiya dzira, ana agalu amamwa mkaka wopangidwa ndi mayiyo.
Dziwani zambiri za platypus munkhani ya PeritoAnimal.
njoka ya mphiri
THE njoka ya mphiri (Njuchi za Viper), ndi chitsanzo china cha nyama za ovoviviparous komanso njoka zambiri. Chokwawa ichi chimapezeka m'malo ambiri ku Mediterranean Europe, ngakhale sichikhala choopsa kwa anthu kapena chosavuta kupeza, njokayi. ndi wowopsa kwambiri.
Kumva dzina la njoka ya mamba kumabwera m'maganizo mwanu nkhani ya Cleopatra, PA. Anadzipha pamene anaperekedwa ndi njoka yakuthwa yomwe inali itabisala mudengu la nkhuyu. Komabe, Cleopatra adamwalira ku Egypt, malo omwe chokwawa ichi sichapezekanso, ndiye kuti mwina amatanthauza njoka yaku Egypt, yomwe imadziwikanso kuti Cleopatra's Asp, yemwe dzina lake lasayansi ndi Naja heje.
Mulimonsemo, akatswiri ambiri a mbiriyakale amawawona kuti ndi abodza kuti imfayo idachitika chifukwa cholumidwa ndi njoka, ngakhale itakhala yamtundu wanji, ponena kuti Cleopatra amatha kudzipha pogwiritsa ntchito mtundu wina wa poizoni, ngakhale nkhani ya njokayo ili ndi chithumwa chochuluka.
lycrane
The lynchan (Anguis fragilis), popanda chikaikiro chilichonse, nyama yodabwitsa kwambiri. Kuphatikiza pa kukhala ovoviviparous, ndi buluzi wopanda miyendo. Imawoneka ngati njoka koma, mosiyana ndi zokwawa zambiri, sikuti imangoyang'ana dzuwa chifukwa imakonda malo onyowa komanso amdima.
Mosiyana ndi platypus ndi asp, the mwala wapangodya siwowopsa ngakhale pali mphekesera zotsutsana. M'malo mwake, zilibe vuto lililonse ndi nyongolotsi pokhala gwero lalikulu lamphamvu. Palinso omwe amati lyranço ndi yakhungu, koma palibe kudalirika pazambirizi.
Shaki yoyera
Pali nsombazi zambiri zomwe zingakhale zitsanzo za nyama za ovoviviparous, monga shark yoyera (Carcharodon carcharias), otchuka komanso owopa padziko lonse lapansi chifukwa cha kanema "Nsagwada" motsogozedwa ndi Steven Spilberg. Komabe, kwenikweni, mutu woyambirira wa kanema ndi "Nsagwada" zomwe mu Chipwitikizi zimatanthauza "nsagwada"
Ngakhale kuti ndi nyama yolusa yomwe imatha kudya munthu, shark yoyera imakonda kudyetsa nyama zina, monga zisindikizo. Imfa zamunthu zomwe zimayambitsidwa ndi nyamazi ndizotsika poyerekeza ndi zomwe zimachitika ndi nyama zina zomwe zimawoneka ngati zopanda vuto pamaso, monga mvuu.
