Abrau sprat - wukuthi senhlanzi?

Abrau sprat - yini le nhlanzi? Lapho uhlala futhi sizodlani? Ufuna ukuthola izimpendulo zale mibuzo? Yibe usufunda wona la sihloko olwengeziwe.

incazelo

Abrau sprat - izinhlanzi naphakathi ophila ngamanzi agobhozayo, emndenini ngokuzawa. Umzimba ifinyelela amasentimitha ayisishiyagalolunye ubude. Isisindo inhlanzi eyodwa - eziyishumi amagremu. Uhlala sprat abrau hhayi ningi than iminyaka emibili. It udla zooplankton encane.

ukukhiqizwa kabusha

Lapho eneminyaka engu-unyaka owodwa ifinyelela ekuthombeni. Ubude umzimba ngalesi sikhathi kuba amasentimitha ezintathu kuya kweziyisihlanu. Zidala iqala ngo-May ihlala kuze Okthoba. Ngokuvamile, lokhu kwenzeka ngemuva kwelanga, ebusuku. Amazinga amanzi kabusha evumayo lamadigri okungenani amabili.

Ukuze kanye abrau sprat, izithombe ongawabona kulesi sihloko, kungaletha phezu amaqanda amathathu izinhlanzi. ukuthuthukiswa wabo kushesha kakhulu. Kusukela mzuzu nokuvuthwa we amaqanda achamusela gazinga kudlule amahora hhayi angaphezu kwayishumi nambili. Ngemva kwalokho, baqala kujule kuze phansi ngokuzimela. Zogqinsi eliphezulu yamanzi bayavuswa kuphela uma bangancibilika -yolk sac. Adult abrau sprat odla ezinamagobolondo. inhlanzi Young udle copepods, rotifers, isitshalo eziphilayo futhi amaqanda.

ukukhahlamezeka kwendawo

Ngokuvamile lolu hlobo izinhlanzi ezitholakala echibini okuvalelwe Abrau, etholakala eduze emzini Novorossiysk, Krasnodar Krai. Abrau sprat e nineties ngokuvamile zidala futhi kuletha inzalo ngaphezulu. Kodwa konke kwashintsha nge ushintsho izimo zezulu, kanye nomhlaba obhekwe eChibini nezinye izinhlobo izinhlanzi. ukuletha kwakamuva abrau sprat ukungakhululeki, nokuholele ekushoneni yenzalo, kanye labantu siyancipha.

omunye zenyathi

ETurkey, ososayensi bathole ifomu eseduze zezinhlanzi njengabantu zenyathi ezifana abraulskaya sprat. Buka imvelo izinhlanzi. Ngokuvamile zitholakala kwi-chibi. Kwenza ukuthuthela isikhundla oqotho, ngokuvamile ne-plankton. Ntambama abraulskaya sprat ungabeka khona ichibi ukujula, ebusuku, kunalokho, antante phezulu emanzini.

Kungani encishisiwe inombolo?

Kuze kube sekupheleni zamashumi amahlanu lolu hlobo inhlanzi izinhlanzi sasibhekwa njengophawu lokuthi okukhulu. Lapho catch inetha yokudoba bawela izinhlamvu ezingamakhulu amabili. Ngemva nineties kwekhulu lama-20 isibalo sehle ngenxa ukuvela izinhlanzi okuzingela echibini. Futhi uma safaka endaweni perch, sprat labantu futhi ingabe wawa kaningi.

Kwenzekalani lolu hlobo sprat?

Okwamanje, leli chibi abavikelwe futhi akekho endaweni ukulondolozwa. Izinyathelo ukuze kuvikeleke sprat angeke amukelwe. Esikhathini esizayo esiseduze sihlelwe ukuqhuba ucwaningo ezibanzi Abrau echibini amanzi. Uma, ngesikhathi ucwaningo lwembula ukuba khona sprat, kuyoba ukuhlola ingakanani le zenyathi nokuziphatha saziso cryopreservation ufuzo.

Inani izinyathelo ukubuyisela

Okwamanje uhlelo isakhiwa njengoba ocwaningweni okuhlangene futhi abuyisele labantu sprat. Ngenxa yalesi kubalulekile eyayenziwe ukukhiqiza kabusha umbono acclimate kuyo amanzi ahlanzekile noma ichibi.

Amazinga amanzi kuwo kufanele ifane e Lake Abrau.

Ukuze alondoloze ukubukeka sprat, udinga ukunciphisa inani izinhlanzi ezidla inyama. Okokuqala, kungcono iphezulu.

Abazingeli baphinde badlale indima ebalulekile empilweni nokukhiqizwa izinhlanzi. Phela, kusukela kuye ukupheka ezihlukahlukene izitsha kanye zonke izinhlobo Ungadla.

Namuhla abrau yokuqothulwa sprat. IRed egwalweni Russian Federation isivele ifakiwe ke phakathi kwababusi kwezinhlobo zezinyoni ezingavamile inhlanzi, okuyizinto futhi sprat.
ahlinzwe ngokushesha ukubuyisela izinhlanzi inhlanzi yalolu hlobo ngayo ekulondolozeni kwazo.

isiphetho

Manje uyazi ukuthi ubani lo abrau sprat. Isithombe ngezinhloso umfanekiso ethulwa esihlokweni. Sithemba ukuthi ulwazi kuyoba wusizo kuwe.