Zokubeletha kangaroo: njengoba kwenzeka. imfundo yenzalo

Kwaphela isikhathi eside umbuzo kanjani ukuba babelethe kangaroo akakwazanga ngisho ukuphendula Izazi. Naphezu ukusakazwa okukhulu lezi marsupial e-Australia, Tasmania naseNew Guinea, futhi isondelene kakhulu umuntu, baba wakwazi ukugcina eziningi izimfihlo. Kuphela ngesikhathi esiteji samanje yentuthuko isayensi, ososayensi baye bathola njengoba nokubeletha okwenzeka yikhangaru.

Inqubo ukubhanqa

Ngezinye Kangaroo isizini kungekho othize lapho ngokumitha kwemihlambi ngaphakamisa ukuthatha indawo. Kodwa izinqubo okuzala ka abamele zonke izinhlobo kangaroo zenzeka ekhuthele kakhulu.

Nenkathi yokukhwelana for ukunakwa abesifazane ungavula izimpi yangempela phakathi kwabesilisa. A indima ebaluleke kakhulu kulezi Duels uwina emuva umsila, empeleni yenza umsebenzi umlenze yesihlanu. Ilungelo sokukhwelana ukuze onqobile. Naphezu umqondo isakhula mncintiswano elowesifazane, imizwelo engokwemvelo besilisa sabazali bengekho nhlobo. Ngemva uthando imidlalo siphele, iduna iphele. On ukuthi inzalo babezosinda, kumelwe banakekele wentombazane.

Ukukhulelwa kangaroo nokubeletha

Isikhathi sokukhulelwa kangaroo imfushane kakhulu. Kuye zinhlobo, inzalo ivela izinsuku 30-40 nangemva kokuzalela. Ukuze izizukulwane zidlulile ngokuphepha, insikazi kumele ukuthola indawo yokucasha. isikhundla sakhe ngesikhathi beteta, ehlezi, ngomsila wesilwane kuyinto phakathi kwemilenze yakhe. Lokho-ke ewela osanda kuzalwa cub yikhangaru.

Izingane zizalwa encane kakhulu futhi angenisa ukukhanya. Eqinisweni, it is hhayi okwamanje owakheke ngokugcwele-embryo. Usayizi omkhulu komzimba namazinyane azo kwezinhlobo elikhulu kangaroo - 2-3 cm, isisindo - 25 amagremu. e athuthukiswe kahle lapho kuphela walemizimba eziwasiza ukuba singene isikhwama kunina. Kuyinto eside, imilenze sasivumela eqinile phambi, umlomo nekhala.

Ngemuva kokwethulwa ekupheleni, ama-kangaroo ithrekhi khotha yoboya, okuyiqembu ingane kufanele uthole isikhwama. Kodwa ukukhasa ukuba kudingeka usana ukuba ngumnikazi. Lokhu lula indawo uboya esiswini sikamama wakhe, futhi izitho evuthiwe of umuzwa. Indlela ukuze kid isikhwama ukwenza ngokuqinile ukunamathela imilenze phambi izinwele emzimbeni esifazane.

Phakathi nezinyanga zokuqala zokuphila

Once in the isikhwama, ingane linamathela omunye izingono of nezindlala mammary, okuyinto zitholakala khona. Njengoba wazalwa ngaphandle izinwele, ezinyangeni ezimbalwa zokuqala akakwazi lokulawula izinga lokushisa lomzimba wazo. Ngakho-ke, phakathi nezinyanga ezimbili bungeke esikhwameni sikamama.

kakhulu lo mgwamanda ngempela isakhiwo ezithakazelisayo. Ngaphakathi isikhwama abushelelezi, kodwa imiphetho yayo ivikelwe noboya obukhulu. Lokhu kukuvumela ukuvikela umntwana sezulu. Ngaphezu kwalokho, i-kangaroo besifazane uyakwazi ukulawula imisipha isikhwama. Unquma lapho ukuyidlulisa cub wakhe. Isikhwama ivaliwe linamathele kuwo ngokwanele. Ngokwesibonelo, ngesikhathi zibhukuda ke akukho amanzi engena.

Ngezinye zokukhula ezihlukene yayo le cub udla ubisi, okuyinto uhluke ngezithako zawo. Insikazi has esifubeni ezine, kanti isidumbu sakhe yena uyakwazi ukukhiqiza ezimbili ezihlukene ngokuphelele ngezithako zawo ezifana ubisi. Iqiniso lokuthi iziphuzo ingane ngokushesha ngemva parturition iphutha kangaroo, has impahla elwa namagciwane. Lokhu kubaluleke kakhulu, ngoba amasosha omzimba usana kwakhiwa hhayi ngokugcwele okwamanje.

"Izingane eziningi" umndeni

Ngemva 1-2 izinyanga emva kokuzalwa komntwana wabo zesifazane sokuqala sesilungile sokukhwelana futhi. Lapho kukhona ukuzalwa komntwana yesibili, owokuqala basahlala esikhwameni. Ngakho, nakuba ngokungangabazeki kangaroo zesifazane unakekela izingane ezimbili zeminyaka eyehlukene. Indwangu izikhwama ziqinile kakhulu, futhi bayakwazi ukumelana isisindo inzalo ngemva kokuba uqale zikhule.

Ngaleso sikhathi, lapho ingane yesibili, nomfowabo omdala iqala ukondla ubisi kusuka embeleni yesibili okungukuthi, njengoba sekuphawuliwe kakade, kuhlukile kwengoma.

Kwezinye zama-kangaroo, isibonelo Quokka, nemvelo enikeziwe ukukhulelwa zemibungu ezimbili. Kodwa okokuqala, ingane eba, futhi kuphela uma ifinyelela inyanga eyodwa iqala ukuthuthukiswa yesibili. Uma isithelo sokuqala isibulewe, ukukhula yesibili iqala ngokushesha. Ngakho-ke, sisuke sicabanga ukuthi kudingeka ukuchitha isikhathi ku ukubhanqa owengeziwe.

Ukuzalwa ezimithi amaphahla noma kwenzeka kwezinye, zinhlobo enkulu kangaroo. Izithombe ezithathwe ososayensi ukufakazela ukuba khona kwalezi imikhaya "esikhulu".

Ngokuvamile, umntwana waxhuma sikhwama kamama kunesithembiso ngezinyanga eziyisikhombisa. Ukuba umdala ngokwanele, uqala isikhathi esifushane ukuphuma uphinde uzame ukudla imifino. Nokho, lapho kuqubuka izimo ezingaba ingozi, uphinde efuna indawo yokukhosela sikhwama kamama. Kuphela uma ingane ekugcineni ngokuqina, uqala ukuphila ezimele.

Ukunakekela inzalo

umsebenzi zesifazane akugcini ngalolo nokunikela ukuphila enzalweni nimuphe. Linikeza ukulondeka, futhi uqaphe ukuhlanzeka isikhwama. Njengoba i-kangaroo amancane akabashiyi ihlala izinyanga zokuqala zokuphila, yonke imikhiqizo yabo umzimba futhi ahlale kuwo. Ngakho-ke, insikazi kuvula wakhe futhi umane licks amawundlu kuze sebekhulile.

Iphinde kususa isikhwama ngemva kenguryata ushiya wakhe. Ngokuvamile, lokhu kwenzeka lapho inzalo abasha Akasekho kufanelekile khona. Kwenzeka kanjani yilokhu ukuba unina bebodwa Ufaka.

"Foster umama"

Kuyaziwa ukuthi ezinomama uhluke nephunga ezahlukene, ngakho insikazi ifunda izingane zabo. Kukholakala ukuthi ama-kangaroo abazimisele nakancane beyithatha. Imvelo, inqobo nje uma esikhwameni babe amawundlu amabili, ngakho ayikho enye indawo. Nokho, ezimweni lapho inzalo alien, ngemvume ye-izinsikazi zalotshwa, wapha futhi belele esikhwameni sakhe. Ngokuvamile kwenzeka lapho umntwana amadala uyafa. Ngakho, ingono yesibili uhlala free, kodwa ubisi siyaqhubeka namanje ukwenziwa.

Ososayensi futhi ziye zabhala izimo ezingenza abesifazane zazishintsha abantwana babo. Isizathu salokhu ukuziphatha ayikaziwa.

Imininingwane sendlela Kangaroo "usebenzisa" amawundlu nezinye izilwane, akukho ososayensi.