Zosangalatsa za zokwawa: njoka monga mtundu wina

Njoka - nyama mwankhanzaku, kufalitsa m'maiko monse, mwina kupatulapo kuti Antarctic. Zonse m'dziko lawo pali zoposa 3000 mitundu. zokwawa awa ndi chabwinobwino ndipo poizoni kwambiri, ang'ono (kutalika kwa masentimita ochepa) ndi chimphona (mamita 10). malo awo ndi yosiyanasiyana. Iwo amakhala mchere kapena madzi, mu zithaphwi ndi nkhalango, steppes ndi zipululu. Ndipo nthawizina zimachitika terrariums kunyumba. Kubalana a njoka zimadalira zimene mitundu iwo ali, ndi pa chilengedwe. zokwawa kwambiri - dzira-kuika, koma mwa iwo ndi toyesa viviparous.

Za nyengo mating

Ngakhale pakati pa njoka ndi kudutsa hermaphrodites, nthawi zambiri, iwo ali mwamuna ndi mkazi. Choncho, njira kubalana kumafuna anthu awiri: chachimuna ndi chachikazi. Nthawi zambiri, iwo ayenera kuti si makamaka wolemekezeka, koma kukula, osachepera - mtundu. Nthawi zina amuna oposa lathyathyathya mawonekedwe a mchira.

Mating njoka nyengo limapezeka zambiri pambuyo hibernation pamene kutentha amakhala mokwanira yabwino ana. Zokwawa okhala m'madera otentha ndipo semiarid, zimasokoneza ndi isanayambike nthawi inayake imene sikuti zimadalira nthawi ya chaka.

The mwamuna amasamalira munthu amene anasankhidwa ndi sachita kwambiri. Kupeza kuti ndi fungo, zikuyamba kuthamangitsa, ndi pa msonkhano anafotokoza cholinga kuti zikwapu kapena mutu kugwedeza. Nthawi imeneyi, nyama makamaka aukali. Kotero musati kuona mmene kawetedwe njoka kuthengo, makamaka pankhani oimira poizoni zapoizoni wazikang'a.

Pali mitundu imene mwamuna gulu lalikulu, coiling mpira yaikulu. Dongosololi akhoza kutenga masiku angapo. Ndi zosadabwitsa kuti mkazi ubwamuna akhoza kuvala umuna kwa nthawi yaitali, pokhalabe umatha manyowa. Chovomereza kwambiri kumachitika pamene chilengedwe wobwezera yabwino kwambiri imeneyi.

hermaphrodites

Mwa njoka, iwo ali osowa, koma pali Zikatero. Monga ulamuliro, tikulankhula za chilumba botropse okhala makamaka America South. Chodabwitsa n'chakuti pakati pa anthu a mitundu akhoza kubwera kudutsa monga anyamata, ndi hermaphrodites. Yotsirizira ndi makhalidwe kugonana ndi mwamuna ndi mkazi. Choncho, chifukwa kuswana, kokha njoka wina.

Koma izi si chidwi chinthu mu moyo wa zokwawa. Ena akazi kusamalira kaye mazira unfertilized kuti bwinobwino aswa ana. Njira imeneyi kubalana ali osowa ndipo amatchedwa "parthenogenesis".

malo zomangamanga

Pakuti yense dzira wamkazi - ichi ndi chinthu chofunika kwambiri iye ali. Ndi njoka nazonso. Choncho, malo osankhidwa kuika wofatsa, otetezeka ndi omasuka. Tchire njoka zambiri amakhala mu kamakumba una ndipo tibiseni atagona zawo. Forest kupanga izo pansi chikuni choyandama, ndi m'chipululu nthawi zambiri m'manda mu mchenga. Izi zidalira pa chilengedwe ndiponso kukhala malo abwino.

Akazi zambiri kuteteza ana awo, n'kumawotha ndi chidule yogwira minofu ya thupi bola ngati zilibe kubvumbuluka. Makolo achikondi sangathe adzatchedwa njoka, achinyamata amasonyeza kulamulidwa ndi mphindi yoyambirira ya moyo popanga chakudya chawo, osati kuwerengera pa akulu. Mu mitundu ina, ndi udindo chifukwa chitetezo cha chisa wamwamuna, ndipo nthawi zina makolo kulondera yake.

mitundu viviparous

Ziribe kanthu chomwe mtundu njoka, mazira pafupifupi nthawi zonse kukhala mkati mazira, kudya zachilengedwe. Nthawi zambiri izi zimachitika mu chisa kapena zina pobisalira. Koma nthawi zina achinyamata kukhala mwachindunji mkati akazi amabadwa nthawi yomweyo vyluplyayas mazira. Pa nthawi yomweyo ali oyima kwathunthu kwa masiku oyamba a moyo.

M'lingaliro tingachipeze powerenga njoka viviparous kudzali m'chilengedwe. Izi makamaka monga nzika za matupi madzi, komanso ena boas ndi njoka. Pankhaniyi, Ndisanaumbidwe amapuma ndi kudyetsa mwa dongosolo limodzi magazi a mayi.

Kuswana njoka mu ukapolo

Zokwawa ayamba wamba monga ziweto. Ichi ndi chifukwa yaikulu ndi kukonza yosavuta. Njoka sayenera kuyenda, iwo kudya kawirikawiri zinthu makamaka chabe. Chinthu chachikulu - kusankha khola bwino ndi kutsatira malangizo a akatswiri mu mawu nyengo.

Penyani monga njoka kuswana mu ukapolo, ndi kawirikawiri zofunika, chifukwa zimachitika zokha m'mikhalidwe yabwino ochepa. Choyamba, payenera kukhala 2, mmene amuna ndi akazi osiyana. Mafomu zokhudza hermaphrodites, nyumba inalibe. Anthu, makamaka angatengere kapena boa njoka. Ena mwa iwo kuthengo moyo mu mitengo. Choncho, kupeza malo mu ukapolo, kuwonjezera pa kutentha abwino ndi chinyezi, m'pofunika kulenga onyenga tsinde, mizu, zidutswa makungwa anayala. Onani mmene kuswana njoka terrarium, ndi zotheka ngati adzakhala omasuka mwamtheradi. Patsogolo nyengo anakonza mating angapo kukhazikika bwino ndi kugwira masiku ochepa motalikana, pang'ono kutsitsa kutentha. Choncho pali potsanzira hibernation kuthengo. Iwo ndiye anali anaikidwa khola wamba, kuwonjezeka kutentha ndipo zotsatira.

Njoka - chodabwitsa ndi zachinsinsi zilombo zokhala lathuli. nthano zambiri ndi nthano kugwirizana ndi nyama. Anthu ambiri amaopa iwo, ndi ena zomera ku nyumba kwake monga ziweto. Nthawi zina ngakhale terrariums n'zotheka kupeza mbewu. Koma njoka anayamba zimaswana mu ukapolo, iwo ayenera kukhala kwenikweni omasuka.