Wadatacce
The dabbobin viviparous su ne waɗanda ke da alaƙa da haɓaka amfrayo a cikin mahaifar uwa. Misali. zomo, kare, doki.
Rayayyun halittu kamar waɗannan su ma suna da fifikon hayayyafa ta hanyar jima'i. Wannan yana nufin cewa namiji yana haɗe da mace da zarar ya saka maniyyinsa a cikin mahaifarta, kuma ta wannan hanyar abin da ake kira tayi ya fara tasowa.
The viviparous Sun bambanta sannan daga oviparous, wanda dabbobi ne da ke fitowa daga kwai, wanda ke samuwa a cikin yanayin waje. Misalin wadannan dabbobin shine kaji ko tattabara.
Ovoviviparous sun bambanta, bi da bi, daga na baya. Na karshen su ne dabbobin da zuriyarsu ke kyankyashewa daga kwai, amma wannan kwai yana kasancewa a cikin jikin mace har sai zuriyar ta samu ci gaba sosai. Dabbar da ta hayayyafa ta wannan hanyar ita ce maciji, ban da wasu kifi da sauran dabbobi masu rarrafe.
- Duba kuma: Menene dabbobin oviparous?
Gestation a cikin dabbobin da ke rayuwa
The lokacin ciki Yawan nau'in viviparous ya bambanta gwargwadon nau'in kuma wannan ya dogara, a tsakanin sauran abubuwa, akan girman dabbar. Wato, tsawon lokacin giwa zai fi tsayi fiye da na linzamin kwamfuta, don ɗaukar misali ɗaya kawai.
Wani batun da ya bambanta gwargwadon dabba shine yawan zuriya cewa mace na iya yin ciki a duk lokacin da ta samu juna biyu. Misali, zomo yana da zuriya da yawa fiye da mutane.
A mafi yawan lokuta, ƙananan dabbobin da ke rayuwa a cikin mahaifa.A can ne jariri ke sarrafa kansa don samar wa kansa abubuwan gina jiki da iskar oxygen da ake buƙata don ci gaba da rayuwa da haɓaka gabobinsa, har zuwa lokacin da aka haife shi.
A kowane hali, a cikin viviparous zamu iya gano ƙaramin ƙungiyar dabbobi, kamar kangaroos ko koalas, waɗanda ake kira marsupials kuma sun bambanta da sauran daidai saboda ba su da mahaifa. Maimakon haka, jaririn, wanda aka haife shi da ƙarancin ci gaba, ya ƙare daidai da irin wannan a cikin abin da ake kira "jakar marsupial".
- Yana iya ba ku: Dabbobi masu cin nama
Misalan dabbobin da ke rayuwa
- Zomo: Lokacin ciki naku, gaba ɗaya, ƙasa da kwanaki 30.
- Kifi: lokacin ciki na su yana kusan watanni 15.
- GiwaWadannan dabbobi masu shayarwa suna da juna biyu da ke tsakanin watanni 21 zuwa 22.
- Cat: lokacin ciki na waɗannan dabbobin yana tsakanin kwanaki 60 zuwa 70, kusan.
- Mouse: dabba irin wannan baya wuce kwanaki 20 a cikin mahaifa.
- Jemage: lokacin ciki na wannan dabbar yana tsakanin watanni 3 zuwa 6, gwargwadon lamuran.
- Kare: Makonni 9 shine abin da ciki na waɗannan dabbobin ke ɗaukar kimanin.
- Whale: ciki na dabba irin wannan zai iya wuce shekara guda.
- Bear: ciki na wannan dabbar daji zai iya wuce watanni 8.
- Alade: Lokacin yin ciki na wannan dabbar gona kusan kwanaki 110 ne.
- Doki: waɗannan dabbobin suna da juna biyu da ke ɗaukar kimanin watanni 11 ko 12.
- Saniya: Kafin haihuwar, wannan mai kukan yana da ciki kimanin kwanaki 280.
- Tumaki: tumaki na da ciki kimanin wata biyar kafin ta haifi 'ya'yanta.
- Koala: ciki kansa na waɗannan marsupials yana ɗaukar kusan wata guda. Kodayake dole ne a yi la'akari da cewa zuriyar ba ta cika ci gaba ba, amma tana ci gaba da yin girma a cikin jakar marsupial.
- ChimpanzeeWaɗannan dabbobin suna da lokacin yin ciki wanda yana ɗan ƙasa da watanni 9.
- Dabbar dolphin: waɗannan dabbobi masu shayarwa suna da lokacin ciki na kusan watanni 11.
- Kangaroo: a cikin irin wannan marsupials, ciki yana kusan kwanaki 40. Kamar yadda ya faru da koala, ci gaban matasa yana faruwa a waje da mahaifa, a cikin jakar marsupial.
- Chinchilla: lokacin yin ciki na waɗannan berayen kusan kwanaki 110 ne.
- Jaka: ciki na waɗannan dabbobin yana ɗaukar kimanin watanni 12.
- Rhinoceros: ciki na wadannan dabbobin yana daya daga cikin mafi tsawo, tunda zai iya wuce shekara daya da rabi.
Wasu labaran a sashin:
- Misalan Dabbobi Masu cin nama
- Misalan Dabbobin Dabbobi
- Misalan Dabbobin Dabbobi
- Misalan Dabbobi Masu Ruwa
