Mayelana amahlengethwa amaningi indlela bukhoma, kanye nezinye amaqiniso ezithakazelisayo ngalezi zilwane

Ingabe uyazi ukuthi ubani lezi amahlengethwa? Kuyinto hhayi inhlanzi, njengoba abantu abaningi becabanga, lokhu - ezincelisayo. Ngokutadisha lezi zilwane, ososayensi baye bathola amaqiniso amaningi emangalisayo ngisho nasezindabeni eziqanjiwe ezingokwesayensi. Isihloko ekutshela ngazo bese utshela ukuthi adle, indlela ukuxhumana futhi bangaki amahlengethwa baphile.

Sithatha okuseduzane

Dolphins - ezincelisayo, isici engokwemvelo okuyinto Okwezwe Ocean - basonta oda Cetacea. Ngo ososayensi Imininingwane zibale 50 zama lezi zilwane.

Ngo ukusatshalaliswa ihlanganisa wonke umhlaba, ngaphandle kwe-Arctic nendawo ezizobekwa Arctic. Bahlanganyela bahlale izilwandle nasolwandle, kodwa kukhona amahlengethwa angenasawoti - a zezinyoni ezingavamile La Plata, Amazon, umfula Chinese.

Okulandelayo funda incazelo izici kwesakhiwo lalesi silwane emangalisayo, sifunda indlela ukuphila futhi bangaki amahlengethwa.

Ukubukeka, imikhuba

zasemanzini umzimba isilwane has umumo ovikelekile, kwemisipha ne nqunu ngokuphelele, nge isikhumba bushelelezi. On a ikhanda elincane umgodi - the blowhole. Empumulweni side, amehlo amancane ukubona kunuka kabi alikho, isilinganiso ngesivinini travel ngempela ongaphakeme - 5-12 km / h. Ngenxa amazinyo ezincane kanye nokuntuleka imisipha masticatory abazange bazi ukuthi ukuhlafuna niginge izinhlanzi ezincane - ethinini, anchovies - lilonke.

Abantu abaningi abahlala ekujuleni kolwandle kubonakale kungcono kakhulu ingashintshwa ukuze imvelo ezinzima, kodwa akuphazamisi bangaki amahlengethwa bukhoma nendawo yazo yemvelo. Lezi zilwane Yiqiniso, babe izitha - oshaka, imisebe, kodwa bayazi ukuthi kufanele uzivikele kanjani ngokwabo kahle. Nge kumpambuko-up kanye ngomfutho omkhulu bayishaya emakhaleni abo eqinile ukuhlambalaza kwesitha sayo, futhi kuhloswe ngaso ubuthakathaka - gills noma isisu. Njengoba amahlengethwa - yizilwane kwezenhlalo futhi wahlala njalo ndawonye abantu ngabanye 10-15, zonke ngothi lwabo kuphumelela kakhulu ukhahlela izitha. Ngaphezu kwalokho, amahlengethwa afakwa ngokwemvelo amaza omsindo okukhethekile. Nge kunyakaza umsindo abakuchaza ngokunembile isakhiwo into, Ubukhulu bayo, indaba, ibanga kuso. Ngakho-ke, ngokufunda umbuzo amahlengethwa amaningi indlela bukhoma, ososayensi bathole ukuthi kwesilinganiso sobude beminyaka yokuphila endle iminyaka 50-90.

Yini kuthinta isilinganiso sobude bokuphila

Kokuma wasiza unqume ukuthi yini izici eziyinhloko kuthinte isilinganiso sobude bokuphila amahlengethwa:

1. Amandla. Endle, lezi zilwane zidla khona ikakhulu izinhlanzi, i-squid ne-shellfish. Nakuba ososayensi kakade ukuthi yini okufanele badle amahlengethwa, kodwa basekuthunjweni, ngisho nabantu abadla esiqinile, ababuzwayo ukukhuluphala, okuyinto lihlotshaniswa linendawo encane ephilayo ezivalekile.
2. isimo senhlalo. Kuyaziwa ukuthi ngokwemvelo amahlengethwa siphile njengoba umkhaya owodwa kuphela, futhi lapho bahlukene umndeni, zingabantu nostalgic kakhulu.
3. indawo ezihlala kuyo. Lezi zilwane athande ukudlala, wavala ngoLwesithathu e Kuse kakhulu sifushanise ezimpilweni zabo.
4. Impilo. Ososayensi baye bathola ukuthi they jeza nga izifo 'ongumuntu "- pneumonia, isifo senhliziyo nomdlavuza.

Njengoba isiphetho, e nesimo salezi izilwane bahlala isikhathi eside kakhulu kuneminyaka e okugcinwa noma emachibini. amahlengethwa Bangaki bukhoma in ekuthunjweni? Hhayi iminyaka engaphezu kuka-10-15. Ngakho, isitha sawo esiyinhloko - indoda.

Kanjani ningi nyaka siphile amahlengethwa, futhi ixhomeke zilwane. Omude kunayo yonke owake Orcas bukhoma, imikhomo bottlenose amahlengethwa - okuyisilinganiso seminyaka engu 40-60. zinhlobo Irrawaddy uhlala kuze kube iminyaka engu-30. Kunabo bonke amahlengethwa emfuleni siphile - eminyakeni 15-20.

5 amaqiniso athakazelisayo

1. Ziyazi ukuthi ukukhuluma. Sekuvele lawo. Lezi zilwane zihlukaniswa abakhileyo kwamanzi futhi umuntu obizwa ngokuthi ehlukile.
2. Lokujabulela kwaba kokutholakala yokuthi ngesikhathi sokuzalwa ihlengethwa ngalinye iphakethe unikezwa igama.
3. Dolphins futhi indoda - kuphela ezincelisayo emhlabeni abaya ocansini, hhayi nje ngobe ukuzala kodwa ubumnandi.
4. Dolphins ukuzibona esibukweni.
5. Ngokuvamile ihlengethwa imvelo nokubusa matriarchy.