-Delile
O khuzani uyisilwane esinelukuluku lokwazi. Kusukela itholakele kube nzima kakhulu ukuyihlukanisa njengoba inezici zezilwane ezihluke kakhulu. Inoboya, umlomo wodada, izalela amaqanda futhi ngaphezu kwalokho iphakela amaphuphu ayo.
Kuyisilwane esikhona empumalanga ye-Australia nasesiqhingini saseTasmania. Igama layo lisuselwa ku-Greek ornithorhynkhos, okusho ukuthi "efana nedada’.
Kule ndatshana kaPeritoIzilwane sikhuluma ngalesi silwane esingajwayelekile. Uzothola ukuthi izingela kanjani, izala kanjani nokuthi kungani inezici ezahlukahlukene kangaka. Qhubeka ufunde bese uthola inhlebo nge-platypus.
Yini iplatypus?
I-platypus iyi- isilwane esincelisayo esisodwa. I-Monotremes i-oda lezilwane ezincelisayo ezinezici ze-reptilian, njengokubeka amaqanda noma ukuphatha i-cloaca. I-cloaca iyi-orifice engemuva komzimba lapho kuhlangana khona amasistimu wokuchama, wokugaya ukudla nokuzala.
Njengamanje kunezinhlobo ezi-5 eziphilayo zama-monotremes. O Platypus kanye monotremates. Ama-monotremates afana nama-hedgehogs ajwayelekile kepha ahlanganyela ngezici zokufuna ukwazi ze-monotremes. Zonke ziyizilwane ezihlala zodwa futhi ezingabambeki, ezihlobene kuphela phakathi nezikhathi zokukhwelana.
zinobuthi
I-platypus ingesinye sezilwane ezincelisayo ezimbalwa emhlabeni lokho ube nobuthi. abesilisa bane- isipikili emilenzeni yangemuva ekhipha ubuthi. Ifihlwa yizindlala ze-crural. Izinsikazi nazo zizalwa nazo kepha azikhuli ngemuva kokuzalwa futhi zinyamalale zingakabi mdala.
Ungubuthi obunobuthi obuningi obukhiqizwa amasosha omzimba ezilwane. Kuyabulala ezilwaneni ezincane futhi kubuhlungu kakhulu eyabantu. Kuchazwa izimo zabaphathi abaphethwe ubuhlungu obukhulu izinsuku ezimbalwa.
Ayikho ikhambi lalo shevu, isiguli sisebenza kuphela ngemishanguzo yokulwa nobuhlungu bokulunywa.
Ukukhethwa kukagesi
I-platypus isebenzisa i- uhlelo lwe-electrolocation ukuzingela inyamazane yabo. Bayakwazi ukubona izinkambu zikagesi ezikhiqizwe yinyamazane yabo njengoba bethola imisipha yabo. Bangakwenza lokhu ngenxa yamaseli we-electrosensory anawo esikhumbeni sabo somlomo. Futhi zinamaseli we-mechanoreceptor, amaseli akhethekile wokuthinta, asatshalaliswa ngasempumulweni.
Lawa maseli asebenza ngokubambisana ukuze athumele ubuchopho ulwazi oludingayo ukuze luziqondise ngaphandle kwesidingo sokusebenzisa iphunga noma ukubona. Isistimu iyasiza kakhulu ngoba i-platypus ivale amehlo ayo futhi ilalela kuphela ngaphansi kwamanzi. Icwila emanzini angajulile futhi imbe phansi ngosizo lomlomo wayo.
Isisulu esihamba phakathi komhlaba sikhiqiza izinkambu ezincane zikagesi ezitholwa yi-platypus. Iyakwazi ukuhlukanisa izidalwa eziphilayo ezintweni ezingenamqondo ezizungezile, okungenye yezimanga ezivelele kakhulu nge-platypus.
Kuyindlela ye- isilwane esidla inyama, izondla kakhulu ngezibungu nezinambuzane, ama-crustaceans amancane, izibungu namanye ama-annelids.
amaqanda
Njengoba sishilo ekuqaleni, ama-platypus anjalo ukuzimela. Ziyizilwane ezincelisayo ezizalela amaqanda. Abesifazane bafinyelela ekuvuthweni ngokocansi kusukela ngonyaka wokuqala wokuphila futhi bazalela iqanda elilodwa unyaka nonyaka. Ngemuva kokulingiswa, owesifazane uyaphephela imigodi izimbobo ezijulile ezakhiwe ngamazinga ahlukene ukugcina izinga lokushisa nomswakama. Lolu hlelo lubuye lubavikele ekukhuphukeni kwamazinga wamanzi kanye nezilwane ezizingelayo.
Benza umbhede ngamashidi bese befaka phakathi 1 kuya ku-3 amaqanda 10-11 millimeters ububanzi. zingamaqanda amancane ayindilinga kakhulu kunalawo ezinyoni. Zikhula ngaphakathi kwesibeletho sikamama izinsuku ezingama-28 futhi ngemuva kwezinsuku eziyi-10-15 zokufukanyelwa kwangaphandle inzalo iyazalwa.
Lapho kuzalwa ama-platypus amancane asengozini enkulu. Azinaboya futhi izimpumputhe. Zizalwa zinamazinyo, ezizowalahla ngesikhathi esifushane, kusale izingcwecwe ezinama-horny kuphela.
Zincela inzalo yazo
Iqiniso lokuncelisa amaphuphu alo kuyinto ejwayelekile ezilwaneni ezincelisayo. Noma kunjalo, i-platypus ayinazo izingono. Manje uncelisa kanjani?
Enye into ethokozisayo nge-platypus ukuthi abesifazane banezindlala ezincelisayo ezitholakala esiswini. Ngoba azinazo izingono, khipha ubisi ngokusebenzisa izimbotshana zesikhumba. Kulesi sifunda sesisu kunemisele lapho kugcinwa khona lolu bisi njengoba luxoshwa, ukuze izingane zikhothe ubisi esikhunjeni sazo. Isikhathi sokuncela senzalo izinyanga ezintathu.
Ukuqothula
njengesilwane semi-emanzini kuyinto ukubhukuda okuhle kakhulu. Yize inemilenze emi-4 evulekile, isebenzisa kuphela imilenze yayo yangaphambili ukubhukuda. Imilenze yangemuva iyinamathisela emsileni bese iyisebenzisa njengephini lokuqondisa emanzini, njengenhlanzi.
Emhlabeni bahamba ngokufana nesirhubuluzi. Ngakho-ke, futhi njengelukuluku le-platypus, siyabona ukuthi banemilenze ebekwe ezinhlangothini hhayi ezansi njengezinye izilwane ezincelisayo. Amathambo e-platypus akudala kakhulu, anemikhawulo emifushane, efana naleyo ye-otter.
Izakhi zofuzo
Ngokutadisha imephu yezakhi zofuzo ye-platypus, ososayensi bathole ukuthi ukuxubana kwezici ezikhona ku-platypus nakho kubonakala kuzakhi zofuzo zalo.
Zinezici ezibonakala kuphela kuma-amphibians, izinyoni nezinhlanzi. Kepha into efuna ukwazi kakhulu ngama-platypus uhlelo lwabo lwe-chromosome yezocansi. Izilwane ezincelisayo njengathi zinama-chromosomes amabili ocansi. Noma kunjalo, i-platypus unama-chromosomes ocansi ayi-10.
Ama-chromosomes abo ocansi afana kakhulu nezinyoni kunezilwane ezincelisayo. Eqinisweni, abanaso isifunda se-SRY, esinquma ubulili besilisa. Kuze kube manje akukatholakali ukuthi ucansi lunqunywa kanjani kulezi zinhlobo.
