Les ukrebe I-Oviparous ibeka amaqanda, ngokuqhelekileyo amakhulu, ngokuthe ngqo emanzini. … Emva kwethuba lokufukama, iqanda likhuphela elincinane elwandle ukrebe. Les ukrebe Iintaka ze-Ovoviviparous nazo zizala ngamaqanda, kodwa akhula kwaye aqandusele ngaphakathi emzimbeni kamama.
Ookrebe babelana njani ngesondo? Ngexesha lokukhwelana, i ukrebe inkunzi ibambelela ngobundlobongela kwiphiko lemazi ngokulunywa, de ibe yi coitus. Kwiintlobo ze-viviparous ezifana ukrebe grey, iimbumba zikhula kwisibeleko sikamama kwaye abancinci bazalwa sele benziwe. Imazi inokuzala i-1 ukuya kwi-16 encinci.
Bazalwa njani ookrebe abamhlophe?
I-ovoviviparous: amaqanda akhula kwaye aqanduselwe kwisibeleko sowesifazane, kunye ne-uterine cannibalism (njengamanye ama-lamnids). Ixesha lokumitha alikaziwa, kuba kude kube ngoku alikaze libonwe ukukhwelana kwenkulu Ukrebe omhlophe. Kuqikelelwa phakathi kweenyanga ezili-12 nezili-18.
Wazala njani ukrebe?
“Indlela yokuzala yomzali omnye apho imizila yemfuza yeseli ethile kamama ikwaziyo ukuqhamisa iqanda ukuze libe yimbumba,” zicacisela eli phephancwadi ingcali. ... i-clone kamama wakhe, ene-DNA efanayo, ukuba donne ukuba akukho mxube.
Kwenzeka njani ukuba ibhinqa elingukrebe libe nabantwana lilodwa?
Ku ukrebe, on uthetha ngokuveliswa kwe-asexual - okanye i-parthenogenesis - i female ichumisa iqanda layo ngeseli ebizwa ngokuba "ngumzimba we-polar," isifundo sithi. Le seli iqulethe imathiriyeli yemfuza ye female, nto leyo ekhokelela “ekukhuleni kwabantu ngokugqithisileyo,” utsho uChristine Dudgeon.
Ngabaphi abona krebe bayingozi kakhulu ebantwini?
Kwakhona sifumana ukulunywa ukrebe -blue mole (okanye ukrebe Mako), ukrebe longimane, ukusuka kukrebe ukuya iingcebiso ezimnyama, ukrebe -inkunzi okanye de Grand ukrebe -isando.
...
Abanye bayatshintsha yingozi phinda-phinda
- kakhulu ukrebe Mhlophe ;
- le ukrebe -ingwe;
- le ukrebe -i-bulldog.
Bahamba njani ookrebe?
Le Shift kwindawo yaselwandle
Abanye, njengaye ukrebe inkunzi, kufuneka ukuhamba ukuphefumla. Bagcina, ngale ndlela, umsinga wamanzi kufuphi neegill.
Bafunyanwa phi ookrebe?
Sifumana kakhulu Ukrebe omhlophe kwiindawo eziselunxwemeni lolwandle olupholileyo, it Est ngamanye amaxesha zikhona kulwandle olushushu. On le fumana ubukhulu becala eMzantsi Afrika, eOstreliya, eNew Zealand, kunxweme lwePasifiki eUnited States naseMexico, njengesiqithi saseGuadalupe, yaye maxa wambi kwiiCaribbean.
Bafumaneka phi ookrebe ehlabathini?
Les ukrebe zikhona kuzo zonke iilwandle kunye neelwandle zehlabathi, ngaphandle kwe-Antarctica. Ezinye iintlobo, ezifana ukrebe- i-bulldog (i-Carcharhinus leucas), iyakwazi ukuhlala emanzini amatsha okanye anetyuwa encinci (imilambo, imilambo, amachweba, amachibi).
Ngaba kukho ookrebe abamhlophe kwiMeditera?
Ewe, sithetha nge Ukrebe omhlophe ! Enyanisweni, nguye ifakiwe Méditerranée ixesha elide kakhulu, kwaye ngokuthe ngqo iminyaka eyi-3.2 yezigidi! On iyinto qu'kuzo zonke, bona kufuneka ibe malunga nekhulu labantu ukuze bavele kude nonxweme kwaye ngakumbi enzulwini.
Unjani ukrebe?
Le ukrebe iphawulwa sisilhouette ethe chu, ngakumbi i-hydrodynamic, kunye ne-pectoral kunye ne-dorsal fins, kunye ne-heterocercal caudal fin yayo (i-asymmetrical in shape). Yena Est kubonelelwe nge-cartilaginous skeleton ngokupheleleyo kunye nesihlanu ukuya kwesixhenxe se-lateral gill slits ngokuxhomekeke kuhlobo.
Ngowuphi owona krebe uyingozi ehlabathini?
Phakathi kwabo banoxanduva lokulunywa emadodeni, sifumana kunye ngokuqhelekileyo: enkulu ukrebe Mhlophe ; i ukrebe-ingwe; i ukrebe-i-bulldog.
Kwenzeka njani ukuveliswa kwe-asexual?
Kuthiwa uhlobo oluthile i-asexual xa ekwazi ukuvelisa kwakhona ngaphandle kokungenelela komntu othile wesini esahlukileyo. Bonke abantu abenziwe bahambelana neeclones: ilifa labo lemfuzo liyafana nelikamama. Ukusasazwa kwemifuno kunokubonwa kwizilwanyana, izityalo kunye neebhaktheriya.
Uyibona njani indoda kukrebe obhinqileyo?
Ukwahlula isini a ukrebe ilula kuneentlobo ezininzi zaselwandle. Yonke into kwi-anatomy yangaphandle ye ukrebe. Les ukrebe Amadoda aguqule amaphiko e-pelvic abizwa ngokuba yi-claspers. THE abantu ababhinqileyo ungabinazo ezi khonkco.
Yintoni igama likakrebe oyimazi?
Kuyafana nengwenya kunye netyala elinomdla kuthi: i ukrebe. Ngoko, ukwazi amagqabantshintshi s 'ubiza ukrebe oyimazi impendulo ilula: i Ukrebe obhinqileyo. Nayiphi na enye indibaniselwano kunye nalo naliphi na elinye igama alichanekanga: *i ukrebe, ukrebe, njl.
Bafunyanwa phi abona krebe bayingozi?
Ezi ntlanzi sont ngoko kuyo yonke indawo kodwa kwezinye iindawo zehlabathi zininzi yingozi kunabanye. Le yimeko yaseOstreliya apho aba bathathu kakhulu eyingozi ngakumbi - ukrebe Mhlophe, ukrebe-tiger kunye ukrebe ibulldog - sont ichongiwe. Yeyona kunye yoyikwa ukrebe.
Ngaba ookrebe bakhohlakele?
Uninzi lwabo Est incinane kakhulu ukuba ibe sisisongelo sokwenene ebantwini. Ziintlobo ezi-5 kuphela kwezingama-400 ezikhoyo sont yingozi. THE ukrebe mhlophe, i ukrebe-Tiger kunye ne ukrebe-i-bulldog sont zigqalwa njengezona ziyingozi kakhulu, ezi ntlobo zidla ngokuba ngunobangela wokuhlaselwa.
Yintoni ookrebe abatya abantu?
Malunga neentlobo ezilishumi zinokuhlasela abantu, kuquka ukrebe mhlophe, i ukrebe-Tiger kunye ne ukrebe-i-bulldog. Eyona nto iyingozi kakhulu ukrebe-ingwe kuba ithanda amathuba. Xa ilambile, ihlasela nantoni na ebonakala inokutyiwa.
Banxibelelana njani ookrebe?
Elles ukunxibelelana kunye neengxowa zokuvumba ezibandakanya imingxuma emincinci emininzi egqunywe yinwebu ebuthathaka kakhulu. Iimpumlo ziqhagamshelwe ebuchotsheni kwaye zihambisa amanzi kwezi zingxobo zokunusa ezifumanisa amavumba abonwa ingqondo.
Bahlala phi ookrebe?
Kukho malunga nama-500 eentlobo, ezihlala kuzo zonke iilwandle zehlabathi ngaphandle koLwandlekazi lwaseMazantsi. Zinokufumaneka ukusuka phezulu ukuya enzonzobileni. Ezinye iintlobo zibizwa ngokuba yi-benthic (ehlala kufuphi nezantsi), ezinye zibizwa ngokuba yi-pelagic (ehlala emanzini avulekileyo).
Baphi ookrebe ehlabathini?
Les ukrebe zikhona kuzo zonke iilwandle kunye neelwandle zehlabathi, ngaphandle kwe-Antarctica. Ezinye iintlobo, ezifana Ukrebe- i-bulldog (i-Carcharhinus leucas), iyakwazi ukuhlala emanzini amatsha okanye anetyuwa encinci (imilambo, imilambo, amachweba, amachibi).
Uphi owona mmandla mkhulu wookrebe abamhlophe?
NGAPHANTSI KOLWANDLE - Malunga neemitha ezilikhulu ukusuka elunxwemeni, iipatroli zase-Australia zabona ukrebe omkhulu oMhlophe ngubani na oya kulinganisa kunye yeemitha ezisixhenxe kwaye iya kuba njalo inkulu intlanzi unyana iintlobo ezibonwa ngabantu. Izaziso zoku ookrebe imbonakalo eqhelekileyo kumanxweme aseOstreliya.
Ngubani utshaba lukakrebe omhlophe?
Akukho mathandabuzo que abaninzi babafundi bethu baya kumangaliswa kukufunda que kakhulu ukrebe omhlophe ngokwakhe wothuswa ngu a irhamncwa ngaphandle kosizi: i-orca eyoyikekayo.
Bafumaneka phi ookrebe eFransi?
Les ukrebe kumanzi aseMeditera
On ibala amawaka ukrebe kuLwandle lweMeditera. Qiniseka ukuba, awuyi kuba semngciphekweni wokudibana nazo. Inene, uninzi lwabo lukhetha ulwandle oluvulekileyo elunxwemeni, kunye nobunzulu bomhlaba. Abanye bade bahlala kubunzulu obungaphezu kwama-4000 m.