Izindaba UmphakathiUhlobo

Inhlanzi Omul kusukela SIG umndeni. Incazelo kanye olwenzeka endaweni

Fish omul, okuyinto unesithombe kulesi sihloko, kusukela oda Salmoniformes umndeni whitefish. Kuthathwa lulwimi anadromous nokudoba. Abantu babemhlonipha kakhulu ngoba palatability kanye izakhiwo ewusizo. Kahlali wonke amanzi futhi kubhekwa untula.

ukukhahlamezeka kwendawo

Le nhlanzi kungaba izinhlobo eziningana, kuye ngokuthi ndawo. Ukhiye: zasezindaweni ezibandayo iBaikal. Ukudlulisa Cisco (aka --Arctic) uhlala ogwini-Arctic Ocean. It spawns ku Eurasia kanye North American emifuleni. Ensimini ka-Russian Arctic Cisco uhlala cishe wonke amanzi enyakatho, ngaphandle River ob.

Eyesibili ifomu - izinhlanzi iBaikal. Omul Baikalian uhlala ogxile echibini iBaikal. Ngezinye izikhathi atholakala eMpumalanga Ekude noma emifuleni emathafeni Yenisei Gulf. IBaikal omul basakaza Ukuboshelwa echibini. ENingizimu-mpumalanga le nhlanzi echichima, futhi enyakatho-ntshonalanga akusiyo nhlobo.

Imicabango ukubukeka iBaikal omul

Kukhona nemibono emibili ukuthi ososayensi baye phambili ukubonakala whitefish e iChibi iBaikal. Eyokuqala uthi kuba inhlanzi sekuphenduke umkhuba. bokhokho bakhe babehlala echibini eminyakeni eyizigidi edlule, futhi ngaleso sikhathi yayinesimo sezulu esifudumele. Lo mbono usekelwa iningi ososayensi.

Esikhathini yesibili egomela ukuthi iBaikal omul - inhlanzi, useyili echibini esikhathini interglacial esisempumalanga yoMfula Yelena kusukela e-Arctic Ocean. Naphezu kweqiniso lokuthi iningi ososayensi ukusekela umbono wokuqala, ukufana ne Arctic wakhe nabo unamandla kakhulu. IBaikal omul kuyahluka kuphela ezinye izici ezincane.

izici kwendawo yemvelo

Omul - inhlanzi, wakhetha ukuhlala ngamanzi abandayo ahlanzekile, ocebile umoya-mpilo. Yena uthanda ukujula. Le nhlanzi isikole. Overwinter emanzini ajulile. Kungaba kwehliswe amamitha angu-300 ukujula. Omul okwazi ukuphila emanzini anosawoti.

Njengoba ososayensi bakholelwa, iBaikal omul uthanda izindawo lapho echibini ixhunywe nemifula emikhulu. Kukhona inani elikhulu daka, okuyinto ngakho abathandwa omul isinambuzane izibungu kanye ezinamagobolondo. Lokhu lula search for ukudla, mhlawumbe kule amanga isizathu Ezindaweni eziningi ezinjalo lapho whitefish.

incazelo

Cisco - izinhlanzi semi anadromous. elongate umzimba, embozwe encane, izikali uvalwe kufaneleka silvery. Umlomo incane, imihlathi obuphelele alinganayo. Kukhona fin adipose. Isiliva umzimba umbala. Ngemuva kuyinto tint sinombala-luhlaza, isisu ukukhanya, izinhlangothi futhi amaphiko esiliva. Phakathi nenkathi yokuthomba kwabesilisa avele tubercles EPITHELIAL. amnyama strip enomzimba omncane ingase ukunweba emaceleni.

Cisco - inhlanzi encane, ngokuvamile ingeqi 800 amagremu. Kodwa ngezinye izikhathi bethola abantu ezinkulu. Ubude yabo ongafinyelela kuze kube yingxenye imitha, nesisindo - amakhilogremu angaphezu kwelilodwa nengxenye. Fish musa aphile iminyaka engaphezu kuka-18. Ngokwesilinganiso, isilinganiso sobude bokuphila of Cisco - engu-11.

ukudla

Omul - inhlanzi, like iningi salmon ayeke ukusuthisa ngesikhathi zidala kuphela. Ngezinye izikhathi, i-ekudleni izinhlanzi ezihlukahlukene. Ukudla - zooplankton, gazinga inhlanzi encane, ezingenamgogodla benthic. It feeds izinhlanzi ekwindla nasehlobo, ekudleni ugu izindawo mysid, plankton crustacean, Gammarus.

ukukhiqizwa kabusha

Okusakazwa izinhlanzi ngonyaka, ukufinyelela ngokobulili ukuvuthwa yobudala kanye. Ngalesi sikhathi, abantu ngokuvamile ezingaphezu kuka ubude 30 amasentimitha. Futhi abesilisa ngokuvamile abavuthiwe unyaka owodwa ngaphambi kwe-nabesifazane. Ukuthomba Cisco kungathatha 2 kuya ku-3 iminyaka.

Ukuze eziyizimbangela le nhlanzi uya kude, abangaphezu kuka-1,000 km. Ngokwenza kanjalo, amabhange akuzona kufanelekile futhi ugweme emanzini angajulile, ubambe phakathi embhedeni. Cisco zidala kuyinto ekuqaleni kuya maphakathi no-August. Lapho esondela zidala enkulu esikoleni izinhlanzi sehlukaniswe imihlambi encane.

Cisco eziyizimbangela izinhlanzi iqala ngasekupheleni September - ekuqaleni kuka-October. Amazinga amanzi ngalesi sikhathi akuyona ezingaphezu kuka-4 degrees. Ukuze eziyizimbangela omul ukhetha isihlabathi-itshana esingekho ngaphansi kwamamitha amabili ukujula phansi.

Amaqanda ububanzi 1.6 kuya 2.4 mm. Ababona okunamathelayo, ngezansi. Esusa amaqanda, Cisco ithunyelwa ngezizathu yokudla. Cisco ongabeka kuze kufinyelele amaqanda 67.000, okuyinto Roll phansi sifinyelela engezansi emfuleni, ngaphandle kokuma ezindaweni ngezizathu zidala.

ukubaluleka kwezomnotho

Cisco kuyinto izinhlanzi ezibalulekile kwezohwebo. ukudoba yakhe engalawuliwe kuye kwaholela ukwehla elibukhali labantu kuleli chibi. Kule minyaka engu-50 edlule, izikhathi iBaikal omul Kwase kusele kancane yokuqothulwa. Kodwa sibonga isikhathi wethulwa kuvinjelwe catch yayo zezinhlanzi imiphakathi ziye uyalulama. Manje futhi Cisco wasongelwa yokuqothulwa.

Fish omul: izakhiwo ewusizo futhi umsoco

Lena inhlanzi ezihlwabusayo kakhulu. Cishe amakhaya angu 20% siqukethe amanoni, ikakhulukazi zenyathi zasolwandle. Cisco inyama ngokushesha ugxile (amahora 1-1.5) futhi ine okusezingeni eliphezulu a umsoco. Kodwa amahwahwa esidumbu e izinhlanzi etholakala ngaphakathi komgodi ongaphakathi kwamathumbu, isibindi kanye ungqimba ongama. Ngokulinganayo basakaza phezu amaphiko kanye nemisipha.

Cisco amumethe-fatty acid, okuyinto ukunciphisa igazi viscosity futhi ngcono ukusebenza inhliziyo nesimiso sezinzwa. Inyama Cisco eqhukethe kavithamini C. It kungaphezu kwezinye izinhlanzi. Lezi amavithamini kubalulekile ukuze isimiso sezinzwa futhi zokuzala.

ingxenyenamba Mass Cisco amathambo hhayi ngaphezulu kuka-7%. Nale aphume lokhu inhlanzi okusemathinini eliphezulu okulungiselelwe. Isetshenziselwa umsoco wezokudla.

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