Zvemukati
Iyo ovuliparous mhuka Ndeavo vane kusangana nekunze kwekuumbwa kwemwana, zvinoreva kuti, mukati mehurongwa hwekuzvara pabonde, zvese kusangana kwezai uye kukura kwazvinoita chimiro kunoitika kunze kwemuviri wechikadzi. Ovuliparity imhando yeoviparity, uye mazhinji emarudzi ari eboka iri hove.
Iyo yekuberekesa maitiro mune ovuliparous mhuka inoitika nenzira yakawiriraniswa:
- Hadzi inodzinga mazai ayo nekuaisa munzvimbo dzakavanda, uko zvisingaite kuti zvikara zvisvike.
- Munhurume anoona mazai aya oasanganisa, panobva paumbwa sero rezai risingazove negoko.
- Ipapo iro zai rinokura, iro richaita pasina rubatsiro rwemukadzi kana murume. Izvi zvinokanganisa akawanda mazai, nekuti zvikara zvinogona kudzora huwandu hwevana.
Nekuda kwekufanana mumashoko, vanhu vane ovuliparous vanowanzo kanganiswa ne oviparous (mhuka dzine kusangana kwemukati kana kwekunze, nekunze kwembryonic kukura), iine viviparous (mhuka dzine embryonic kukura mukati memuviri waamai) kana ne ovhonziparous (Mhuka dzinoberekana mumazai anochengetwa mukati memuviri waamai kusvika kumagumo ekukura kwembryonic).
- Omnivorous mhuka
- Mhuka dzinodya
- Mhuka dzinokanganisa
Mienzaniso yezvipfuwo zvinoputika
- Amphibians: Matatya echikadzi ane mazamu avo padivi peitsvo. Vanhurume, avo zvakare vane machende avo padhuze neitsvo dzavo, vanosvika vakadzi mune imwe nzira inonzi amplexus, iyo inomutsa kuburitswa kwemazai. Mushure mekunge vaburitswa, murume anozovasanganisa uye masvondo mashoma gare gare ivo vana vanozozvarwa, vakavharirwa mune gelatinous mvura yezai kusvikira vasunungurwa.
- Starfish ine kubereka pabonde: Mazai asina kusvibiswa anosunungurwa mugungwa, nzvimbo imwechete iyo vanhurume vanoburitsa urume hwavo. Kudya kwemazai panguva yekubata kune izvo zvinovaka muviri zvavanochengeta mukati, pamwe nemamwe mazai e starfish. Mimwe mienzaniso yerudzi urwu inoberekana asexually.
- Mollusks: Mahombekombe echikadzi anoisa mamirioni emazai mugungwa, ayo anoshanduka kuita maruva uye anogara panzvimbo dzakaomarara, kuti aiswe urume uye kuitiswa gesture kwenguva inogara pakati pevhiki rimwe kana maviri. Pazera regore rimwe chete mbutu uye mussels dzinosvika pakukura pabonde.
- Crustaceans: Kubereka kunoitika mushure mekufambidzana, apo murume anoburitsa spermatophore pane yepakati chikamu chevakadzi cephalothorax. Nokusunungura mazai, anotyora bhegi uye osunungura urume hwemurume kuitira kuti isanganise mazai munzvimbo yekunze.
- Hedgehogs: Vakadzi vanoregedza mazai munzvimbo dzakavandika dzemasaisai, uye vanhurume vanosvika kubva kunzvimbo dzinowanikwa pachena kuti dzivaise.
- Makara
- Trout
- Nguruve
- Mussels
- Silverside
Inogona kukushandira:
- Viviparous Mhuka
- Oviparous mhuka
