Dolphin

ʻO nā Dolphins ka mea hoihoi i nā kānaka: i ka wā kahiko, ua manaʻo ʻia he laʻa nā mammals moana naʻauao.

ano

He aha ke ʻano o nā iʻa?

ʻAʻole iʻa nā Dolphins akā he mau mammals. Aia lākou i ka papa koholā, ma laila i ka suborder o nā koholā niho, a me ka ʻohana iʻa. ʻO ko lākou mau kūpuna he mau mammals terrestrial i hoʻi hou i ke ola wai i mau miliona makahiki i hala.

He mau kino maʻalahi nā Dolphins, e lilo ana lākou i poʻe ʻauʻau maikaʻi loa. Ma muli o ke ʻano, aia lākou ma waena o 1.5 a ʻehā mau mika ka lōʻihi. ʻO nā dolphins nui loa, nā koholā pepehi, hiki i ka lōʻihi o ʻewalu a ʻeiwa mau mika. He triangular hope hope ko nā iʻa, ka hope, ʻelua peʻa mua, nā peʻa, a me ke ʻano maʻamau i kapa ʻia ʻo ka fluke. Hoʻokumu ʻia nā ʻauwae o nā iʻa i nuku lōʻihi.

Aia ma ko lākou mau poʻo he ʻōpuʻu me he hump: ʻo ka melon. He okana kūikawā kēia e hiki ai i nā dolphins ke hoʻonohonoho pono iā lākou iho me ke kōkua o nā leo echo. Aia ma luna o ke poʻo ka lua puhi e hanu ai nā holoholona.

Ma muli o ke ʻano, waihoʻoluʻu ʻia nā dolphins i nā ʻano ʻano hina hina. ʻOi aku ka pōʻeleʻele o ka ʻaoʻao luna ma mua o ka ʻaoʻao ventral. He lolo nui ko Dolphins, no laila ua manaʻo ʻia lākou i waena o nā holoholona akamai loa. Hoʻomohala maikaʻi loa ko lākou lohe a honi.

ʻO nā iʻa iʻa bottlenose kekahi o nā ʻano iʻa iʻike nui ʻia. ʻElua a ʻehā mau mika ka lōʻihi a he 150 a 200 kilokani ko lākou kaumaha. He ʻeleʻele hina ma ke kua, ʻoi aku ka māmā ma ka ʻaoʻao, a aneane keʻokeʻo ma ka ʻōpū. He ʻano maʻamau kona helehelena "ʻakaʻaka". Hoʻokumu nā iʻa iʻa muliwai i ʻohana nui no lākou iho. ʻOkoʻa loa lākou mai nā dolphins maoli ma kekahi mau hiʻohiʻona. No ka laʻana, hiki iā lākou ke ʻike maikaʻi loa.

Akā hiki iā lākou ke hoʻonohonoho pono iā lākou iho me kā lākou ʻōnaehana echolocation. Eia kekahi, ʻoi aku ka lōʻihi o ka ihu o nā iʻa muliwai a pau ma mua o nā iʻa kai. ʻO ka dolphin muliwai nui loa ʻo ia ʻo Amazon River dolphin: ulu ʻo ia a hiki i 3 mika ka lōʻihi a he 160 kilokani kona kaumaha.

Ma hea kahi e noho ai nā iʻa?

Loaʻa nā Dolphins ma nā kai a pau o ka honua. Eia nō naʻe, ʻokoʻa loa nā ʻāpana hoʻolaha o kēlā me kēia ʻano. Noho kekahi ma nā wahi kai nui, ʻo nā mea ʻē aʻe, e like me ka dolphin dusky, aia wale nō ma nā kahakai o ʻAmelika Hema a me ʻApelika Hema. Loaʻa ka bottlenose dolphin ma ka honua holoʻokoʻa ma nā kai ʻoluʻolu a me nā kai ʻoluʻolu, a ma nā kai uka e like me ke Kai Mediterranean a me ke Kai ʻEleʻele.

He ʻokoʻa nā iʻa muliwai: noho wale lākou ma nā muliwai. Noho nā Dolphins ma nā kai kahakai a ma ke kai kiʻekiʻe. ʻO nā iʻa muliwai, ma ka ʻaoʻao ʻē aʻe, noho lākou i nā ʻōnaehana muliwai ʻeleʻele a ʻeleʻele ma nā ʻāina wela.

He aha nā ʻano iʻa iʻa?

He 26 mau ʻano ʻano no ka ʻohana dolphin. Ma waho aʻe o ka bottlenose dolphin, ʻike nui ʻia nā ʻano ʻano ʻē aʻe: ʻO ka dolphin maʻamau, ka dolphin ʻaoʻao keʻokeʻo, ka dolphin slender, ka dolphin spinner, a me ka dolphin kiko. ʻElima ʻano o nā iʻa kahawai. Ua kapa ʻia lākou ma muli o nā muliwai a lākou e noho ai:

He kanaka maoli ka dolphin muliwai Amazon i nā ʻōnaehana kahawai ʻo Amazon a me Orinoco. Noho ʻo La Plata dolphin ma nā estuaries a ma kahi ʻāpana o ke kahakai o Brazil a me Argentina. ʻO ka Ganges dolphin ka mea maoli i India a me Bangladesh ma nā Ganges, ka Brahmaputra, a me Karnaphali ʻōnaehana, ka muliwai Indus i ka Indus, a me ka muliwai ʻo Kina i ka ʻaoʻao haʻahaʻa o ka muliwai Yangtze.

Ehia makahiki o na i'a?

ʻOkoʻa ka manaʻolana ola o nā ʻano dolphin like ʻole. ʻAʻole ʻike ʻia no nā ʻano he nui. Ua ʻike ʻia he hiki ke ʻelemakule loa nā iʻa bottlenose: hiki i nā holoholona i kahi o 37 mau makahiki.

Hana

Pehea e ola ai nā iʻa?

He holoholona pilikanaka loa ka Dolphins. Noho pū lākou ma nā hui i kapa ʻia he kula. Hiki iā ia ke 100 holoholona a ʻoi aku. Akā naʻe, ʻaʻole noho pū nā holoholona like. Ke hoʻololi nei lākou ma waena o nā hui like ʻole. Eia nō naʻe, pili pili nā iʻa he nui me ko lākou mau hoa iʻa. Hōʻike ʻia kēia ma ka ʻoiaʻiʻo e hoʻāʻo lākou e kōkua i nā lālā maʻi a ʻeha o kā lākou ʻano ponoʻī.

Holo ka puʻu iʻa i ka māmā o ʻeono kilomita i kēlā me kēia hola. Ke pāʻani a alualu ʻia paha nā iʻa, ʻauʻau lākou ma 25 kilomita i kēlā me kēia hola. I nā hihia koʻikoʻi, he 80 a 90 mau kilomita i kēlā me kēia hola. Lele pinepine lākou i waho o ka wai a i ʻole hahai i nā moku e holo i ko lākou mau ʻale kakaka.

Maikaʻi nō hoʻi nā Dolphins i ka luʻu ʻana: i ka wā e hopu ai, luʻu lākou a hiki i 300 mika ka hohonu a hiki ke noho i lalo o ka wai no 15 mau minuke. Hiki i kekahi mau ʻano ke luʻu i ka hohonu o 600 mika. Eia nō naʻe, no ka mea he mau mammals lākou, pono lākou e hele mau i luna o ka wai e hanu.

Loaʻa i nā Dolphins kahi ʻōnaehana echolocation a lākou e hoʻohana ai e hoʻopuka i nā kani kani ultrasonic. Hoʻokani ʻia kēia mau kaomi e nā mea keakea i loko o ka wai, e like me nā iʻa pio, a ʻohi hou ʻia e nā iʻa. Mai ke ʻano o ka leo, hiki i nā holoholona ke haʻi pololei inā he pio a i ʻole ke keʻakeʻa i loko o ka wai.

He liʻiliʻi ka ʻike e pili ana i ke ola o nā iʻa muliwai. ʻO kahi hapa kēia no ka paʻakikī ke ʻike ʻia i loko o ka wai ʻino o ko lākou wahi noho. ʻO ka mea i ʻike ʻia, ʻaʻole lākou e lele i waho o ka wai. Eia kekahi, ʻauʻau pinepine lākou e moe ana ma ko lākou ʻaoʻao i ka wai. Nānā lākou i ka lalo o ka muliwai me ko lākou mau hope. ʻO nā iʻa muliwai Amazon e ʻauʻau pinepine ma ko lākou kua.

ʻO nā hoaaloha a me nā ʻenemi o nā iʻa

Hiki i nā iʻa ke hāʻule i ke kohola pepehi kanaka, kekahi o ko lākou ʻohana. Akā, hiki i nā holoholona like ʻole ke lilo i mea pōʻino: inā hui nā iʻa i nā malihini ʻaʻole i pili i kā lākou hui a ʻike ʻole lākou, kipaku lākou iā lākou a hoʻouka paha iā lākou.

Pehea e hānau ai nā iʻa?

Hānau nā Dolphins i hoʻokahi keiki i ka manawa. 'Oko'a loa ka manawa o ka hāpai 'ana mai kēlā me kēia 'ano. ʻO nā iʻa ihu wai, no ka laʻana, hoa kāne mai ka pūnāwai a hāʻule. Ma hope o ka hānau ʻana o 12 mahina, hānau ʻia kahi ʻōpio i 100 a 130 mau kenimika ke kiʻekiʻe.

Hanai ʻia nā ʻōpiopio e ka makuahine no 18 mahina. ʻOiai ua oʻo ka holoholona i ka makahiki ʻelima a ʻumikūmālua mau makahiki, hānau wale lākou i ka makahiki ʻeiwa a 13 mau makahiki. Hānau ʻia nā ʻīlio bottlenose wahine i ʻōpio i kēlā me kēia ʻelua a ʻekolu mau makahiki.