Sevan kifi: mazauninsu, description, photo

Akwai high duwãtsu na Caucasus mai girma babban tafkin. An located a tsawon 1900 mita saman teku matakin. Saboda haka shi ake kira lake: Sevan. Armenia a kasar a wanda ƙasa da shi ne daidai located.

Wannan lake ne mazauninsu na kifi da ake kira Sevan kifi. Ta, ba zato ba tsammani, an yaba da ta masunta ne. Bugu da kari to Lake Sevan kifi, photos of wanda aka gabatar a cikin labarin da aka samu a cikin kogunan dake kusa.

description

Bari mu magana game da wannan kifi. Mene ne wannan? Sevan - musamman irin kifi. Its sunan zo daga Latin salmo ischchan. Armenian kifi kalmar ma'ana "sarki". Saboda haka suna ga ta kyakkyawa da girma, idan aka kwatanta da sauran kifi. Lalle ne, wasu da mutane za su iya isa wani nauyi na har zuwa goma sha bakwai kilo. Wani lokaci akwai Sevan kifi, wanda jiki tsawon - daya mita. Kamar yadda ka gani, da real giant! Ko da a cikin karni na sha biyar da kifi da aka dauka a wasu kasashe na Gabas.

Masana kimiyya ma Sevan kifi, wanda yake a cikin photo takarda ne zuwa kashi hudu iri, ko, a cikin wasu kalmomi, tseren. Kuma suka duka da bambance-bambance daga Turai kifi.

hunturu kifi

Saboda haka, daya daga cikin jinsunan wannan kifi da ake kira hunturu kifi. Wani lokaci kuma ana kiranta hunturu Bakhtak. Wannan irin kifi mafi girma. Akwai lokuta idan misali aka kama goma sha bakwai kilogram, kuma ta tsawon - 104 cm. M size! Sa'an nan a lõkacin hunturu kifi fattening, da launi ne silvery-fari, da kuma mayar da yana da wani launi karfe launi. Duhu spots a cikinsa kadan, kuma suna kewaye da wani baki a kusa da baki, haske launuka. A daidai wannan lokaci ba su faru taba iksoobraznymi idan aka kwatanta da ruwan kasa kifi. Winter kifi suna cin abinci crustaceans, amphipods, waxanda suke da mazauninsu - kasa.

Age na maturation na wannan nau'in na kifi - hudu ko biyar. A wancan lokaci, a lokacin da kifi fara spawning, maza canza launi. Suna da yawa duhu, da kuma su fins ne kusan gama baki. A tarnaƙi suna da 'yan ja spots da haske aibobi a kan sauran bakuna tsaya daga quite a fili. Mãtan kasance canzawa. caviar jinkiri faruwa kai tsaye a cikin lake. Number of qwai har zuwa dubu huɗu. Kafin faduwar tafkin matakin da aka gano biyu garkunan kifi: daya spawning faruwa daga Oktoba zuwa watan Janairu, da kuma sauran daga watan Janairu zuwa Maris. A lokaci guda spawning auku a daban-daban zurfin. A farko zurfin ne 0.5-4 mita, da kuma na biyu - 0.5-20 mita.

Winter Bakhtak musamman prized by masunta ne. Ya yi amfani da su zama wani muhimmin batu na kamun kifi. Duk da haka, bayan da matakin na Lake Sevan ya auku, da yawa spawning kifi zauna a kan tudu. Saboda haka a yanzu, irin wannan kifi ne quite rare.

bazara kifi

Nau'i na biyu na Sevan kifi - kifi wannan shekara. Wannan kifi ne ma da sunan ga shekaru Bakhtak. Sun kira shi don haka saboda shi kayansa mãsu qwai a cikin spring ko rani. Spawning daukan wuri a cikin koguna Bakhtak shayi da kuma Gedak-Bulakh, kazalika a cikin Lake Sevan, a cikin pre-estuarine yankunan da lake. Wannan irin kifi karami. Ta nauyi, idan ka dauki matsakaicin kai wuce kilo biyu, da kuma tsawon - game da 60 santimita. Ore haihuwa kifi yana da shekaru 2-7 shekaru. Wannan irin ra'ayi ne kasa salon kifi.

Wannan kifi za a iya sa a kashe kadan fiye da dubu qwai a spawning. Sau da yawa tarnaƙi daga cikin kifi Bakhtak bazara za ka iya ganin ja aibobi. Commercial stock na da irin wannan kowace shekara an rage saboda gaskiyar cewa hanya zuwa wurin da spawning aka kusan katange.

Bodzhak

Wani subspecies na Sevan kifi ne bodzhak. Wannan Dwarf jinsunan kifi, kuma ta girma ne sosai kananan. An sani cewa mafi girma a kama misali bai isa a tsawon talatin santimita. Kuma su talakawan tsawon jeri daga 24 zuwa 26 cm. Yawancin bodzhaka maza ne quite na kowa ja spots a kan sãsanninku.

Spawning wannan nau'in na kifi ya auku ne kawai a cikin Lake Sevan (Armenia).
Bayan kai da shekaru uku ko hudu shekaru, in ya fara je spawn. Ba dole ne a ce cewa a cikin wannan harka da shi za yi sheƙarsu a sa su qwai da kayansa mãsu shi a fadin kasa na Lake Sevan. Bodzhak spawns daga Oktoba zuwa watan Nuwamba. Kuma masana kimiyya ĩmãni da baya da wannan tsari faruwa a zurfin game da goma sha biyar mita, amma bayan bushewa bakin teku zones da aka gano spawning bodzhaka a zurfin arba'in mita. Duk da haka, su yankin ne quite kananan da ba zai iya sabunta cikin rasa ~ ar teku, amma saboda yawan kifi ya ki gunaguni ƙwarai.

gegharkuni

To, na karshe subspecies na Sevan kifi da ake kira gegharkuni. Sun dabbobi, shi yayi kama kifi parr sauran. Coloring su yana da dan kadan daban-daban nau'i fiye da sauran iri kifi na Sevan. A gegharkuni jiki yana da duhu mai gangara ratsi da launin ruwan kasa da kuma rawaya da kuma ja aibobi. Fattening da suka faru bayan wani shekara a cikin lake. Coloring su duhu fiye da kifi, amma kuma inuwa da azurfa.

Abinci kamar yadda shi ne, ba kawai benthos amma zooplankton, located da farko a cikin ruwa shafi da kuma motsi nisa da tushe. Wannan gegharkuni kuma bambanta daga sauran iri kifi. Yana spawns na musamman a gudãna ruwa, watau koguna.

Sevan kifi: da yawan

Back a cikin 20s na karshe karni fara nuna wucin gadi kiwo na kifi da kuma bazara gegharkuni. Har tsakiyar forties sana'ar kamun kifaye da aka kiyasta a miliyan 1.6 dabbobi. Duk da haka, da kara da rai yanayi a cikin kõguna na matasa deteriorated muhimmanci, da kuma kan hanya don spawn aka zahiri rufe. A ra'ayi na wannan bayan shekaru hamsin gegharkuni da kifi ya fara girma ne kawai a hatcheries.

Duk da dukan matakan dauka don adana da yawan Sevan kifi, caviar tarin a hatcheries ya rage. Duk wadannan yanayi, ciki har da rage na ruwa matakai, da kuma rage na halitta spawning na kifi, ya kai ga gaskiya cewa yawan iri daban-daban na karfe da samun koma baya gunaguni ƙwarai.

Gagarumin taimako a duk wannan sanya eutrophication. Eutrophication kira primary karuwa yawan aiki ta kara ruwa a cikinta gina jiki, kamar yafi sunadarin flourine da nitrogen. Wadannan aka gyara na iya za a gabatar ta hanyar da kududdufai a masana'antu da sharar birni ruwa bayan wanka tare da takin ko da hazo filayen, misali. Da farko, zai iya shafar gaskiya ma a kan kifi a matsayin abinci zama more. Duk da haka, bayan wannan ruwa ingancin tabarbarewa.Idan. Jihar bakin teku sashi ya fara girma, ruwan ya zama hadari, da nuna gaskiya zama kasa da kuma, daidai da, oxygen matakan da aka ma rage.

Species a kan gãɓar rãmi na nau'i nau'i

A wani musamman wuya halin da ake ciki, saboda da canje-canje da faruwa a cikin tafkin da sauran ruwa jikinsu, shi ne mafi girma a kuma mafi karami jinsunan kifi - bodzhak da kuma hunturu kifi. Wannan kifi spawns a cikin lake. Wadannan jinsuna da aka barazana tare da nau'i nau'i. Kuma haka kifi kira Sevan kifi da aka ayyana wani yanayi ajiye da aka jera a cikin Red Littãfi.