Kubereka nyoka

Munguva dzekare, nyoka dzaionekwa kwete chete chiratidzo chekunyengera uye uipi, asiwo kune rumwe rutivi rweuchenjeri uye simba guru. Zvakadaro, vachiri nechinhu chimwe chete vakafanana - kuvanzika. Kusvika iye zvino, munhu haasati akwanisa kuziva zvose pamusoro pehupenyu hwavo.

Kune mhando dzenyoka dzakapatsanurwa kuita varume nevakadzi vaviri, hono nehadzi, uyewo kune dzimwe nyoka dzinenge dziri mbiri dzese kamwechete. Kureva kuti, nyoka ma<em>hermaphrodites. MaHermaphrodites ane nhengo dzese dzebonde, murume nemukadzi. Mhando iyi inonzi Island botrops, vanogara muSouth America, chitsuwa cheKaimada Grande. Sezvineiwo, rudzi urwu rwenyoka runogara chete muchikamu ichi chepasi, mazhinji acho ari hermaphrodite, kunyangwe vese varume nevakadzi vanowanikwa. Zvinonakidzawo kuziva kuti hadzi inogona kukandira mazai nemakite pasina kubatanidzwa kwechirume, kureva kuti, kukandira mazai asina mbereko. Kuberekwa kwerudzi urwu kunonzi parthenogenesis.

Izvi zviri kure nezvese chokwadi pamusoro pekubereka nyoka. Mamwe marudzi mazhinji enyoka haakandira mazai zvachose. Vana vavo vanozvarwa vari viviparous, kureva kuti, vakatogadzirira zvakakwana kukura uye kuumbwa kwemuviri. Mushure mekuzvarwa, vanokwanisa kuzvidyisa ivo pachavo nekukurumidza uye kuwana nzira yekuvanda kubva kumuvengi.

Kune zvakare nzira yechitatu yekubereka vana venyoka - ovoviviparity. Iyi inzira yakasiyana neimwe nzira. Mazai anodya zvokudya zviri mukati memazai, uye mazai acho pachawo ari munyoka kusvikira vana vakura zvakakwana uye votanga kuchochonya.

Vashoma vanhu pakutanga kuona uye ziso rakashama vanogona kuona kuti nyoka ndeyapi. Nyoka dzechirume dzinosiyana neshiri dzechirume uye mhando zhinji dzemhuka pakuti idiki pane hadzi, asi muswe wadzo wakarebesa kupfuura wehadzi.

Asi chinonyanya kushamisa ndechekuti mhando zhinji dzehadzi dzinogona kuchengetedza urume huri mukati madzo kwenguva yakareba mushure mekusangana kamwe chete. Panguva imwecheteyo, nenzira iyi vanogona kubereka vana kakawanda, vachibatanidzwa nembeu iyi.

Apo nyoka dzinozomuka pashure pokurara kwenguva refu muchando, mwaka wadzo wokuberekana unotanga. Kune mhando dzinosangana mumapoka makuru, dzichiungana kuita mabhora uye kuridza muridzo panguva yekuitwa. Vanhu vasingazivi chinhu pamusoro pemaitiro enyoka vanogona kutyisa zvikuru, asi nyoka haifaniri kuurayiwa, panguva ino hapana ngozi kuvanhu. Mambo mhungu anounganidza varume gumi nevaviri vakamupoteredza, avo vanorukwa kuita mabhora, asi, pakupedzisira, murume mumwe chete ndiye achaisa mupfudze. Kuita uku kunogona kuita mazuva 3-4, kozoti mukono wasangana nemunhukadzi woburitsa chinhu chinotadzisa vamwe varume kuita zvimwe chetezvo. Mushonga uyu unoumba chivharo munhengo yenyoka, zvoita kuti mvura yemurume isabude uye kudzivirira vamwe varume kupinda.