-Delile
I- izilwane ze-ovuliparous Yilezo ezinokukhulelwa kanye nokukhula kombungu kwangaphandle, okusho ukuthi, ngaphakathi kohlaka lokukhiqiza ngokocansi, kokubili ukukhulelwa kweqanda kanye nokukhula okwenzeka ngalo kwenzeka ngaphandle komzimba wowesifazane. I-Ovuliparity uhlobo lwe-oviparity, futhi izinhlobo eziningi zaleli qembu izinhlanzi.
Inqubo yokukhiqiza kabusha ezilwaneni ezi-ovuliparous yenzeka ngendlela evumelanisiwe:
- Insikazi iyawaxosha amaqanda ayo iwabeke ezindaweni ezifihliwe, lapho kungenzeki khona ukuthi izidumbu zifinyelele khona.
- Indoda iyawabona la maqanda bese iyawafaka, bese kuthi lapho kwakhiwa iseli leqanda elingeke libe negobolondo.
- Lapho-ke lelo qanda liyokhula, elizokwenza ngaphandle kosizo lwensikazi noma lowesilisa. Lokhu kubeka amaqanda amaningi engozini, ngoba izilwane ezidla ezinye zinganciphisa inani lenzalo.
Ngenxa yokufana ngokwemigomo, abantu abane-ovuliparous bavame ukudideka nabo oviparous (izilwane ezinokukhulelwa ngaphakathi nangaphandle, ngokukhula kombungu wangaphandle), ne viviparous (izilwane ezinokukhula kombungu emzimbeni womama) noma nge umabhebhana (Izilwane ezizala ngamaqanda ezigcinwa ngaphakathi emzimbeni womama kuze kube sekupheleni kokukhula kombungu).
- Izilwane ezi-omnivorous
- Izilwane ezidla inyama
- Izilwane ezidla imifino
Izibonelo zezilwane ezi-ovuliparous
- Ama-Amphibians: Amaxoxo abesifazane anamaqanda abo eduze kwezinso zabo. Abesilisa, nabo abanamasende abo eduze kwezinso zabo, basondela kwabesifazane ngenqubo ebizwa nge-amplexus, evuselela ukuphuma kwamaqanda. Ngemuva kokukhishwa, owesilisa uzobafaka umanyolo bese kuthi emasontweni ambalwa kamuva kuzalwe abasha, babhajwe kuketshezi lwe-gelatinous lweqanda baze bakhululwe.
- I-Starfish enokukhiqiza kabusha ngokocansi: Amaqanda angenawo umquba adedelwa olwandle, indawo efanayo lapho abesilisa bekhipha khona isidoda sabo. Ukondliwa kwamaqanda ngenkathi yenqubo yokukhulelwa kunezakhi eziwagcina ngaphakathi, kanye namanye amaqanda e-starfish. Ezinye izibonelo zalesi silwane zizalanisa ngokweqile.
- AmaMollusks: Izimbaza zezinsikazi zibeka izigidi zamaqanda olwandle, aguquka abe yizibungu bese ehlala ezindaweni eziqinile, ukuze avundiswe futhi akhulelwe isikhathi esithatha isonto elilodwa kuya kwamabili. Lapho unonyaka owodwa izimbaza nezimbaza zifinyelela ekuvuthweni ngokobulili.
- AmaCrustaceans: Ukuzala kwenzeka ngemuva kwenqubo yokuqomisana, lapho owesilisa ekhipha khona i-spermatophore engxenyeni esemaphakathi ye-cephalothorax yowesifazane. Ngokudedela amaqanda, uzophula isikhwama futhi adedele isidoda sowesilisa ukuze kuvundiswe amaqanda endaweni yangaphandle.
- AmaHedgehogs: Abesifazane badedela amaqanda ezindaweni ezifihliwe zamagagasi, bese kuthi abesilisa basondele ezindaweni ezivezwe kakhulu ukuwafaka umquba.
- Izinkalankala
- Ithrawuthi
- Imigqa
- Izimbaza
- ESilverside
Ingakusebenzela:
- Izilwane zeViviparous
- Izilwane ezivundlile
