Cov dej tshiab jellyfish khaws cia hauv lub thoob dej yug ntses

Feem ntau ntawm cov kab jellyfish nyob hauv hiav txwv thiab dej hiav txwv, tab sis muaj ib hom uas tau ua tiav rau cov dej tshiab - Craspedacusta sowerbyi. Cov hom no yog qhov txawv ntawm nws qhov me me thiab classic domed duab. Kev khaws cia hauv tsev thoob dej yug ntses yog qhov ua tau, tab sis yuav tsum muaj qee yam kev mob thiab muaj cov khoom noj muaj nyob tas li.

Chaw Nyob

Dej qab zib jellyfish Craspedacusta sowerbyi yog dav nyob rau yuav luag tag nrho cov teb chaws tshwj tsis yog Antarctica, nyob rau hauv stagnant reservoirs thiab slow-flowing dej backwaters, raws li zoo raws li cov pas dej ua ke thiab reservoirs.

Yuav, yuav qhov twg?

Qhov teeb meem tseem ceeb nyob hauv kev nrhiav tau thiab kev thauj mus los ntawm tus neeg laus jellyfish. Thaum nug hauv lub tshuab tshawb nrhiav (tsis hais Yandex lossis Google), ntau lub rooj sib tham tshwj xeeb tau pom sai sai qhov twg cov neeg paub txog aquarists qhia lawv cov dab neeg ua tiav hauv kev yug me nyuam thiab khaws jellyfish, thiab lawv tuaj yeem qhia koj qhov twg yuav nws. Nws yuav tsum tau muab sau tseg tias nyob rau hauv loj cheeb tsam thiab lub zos xws li Moscow thiab St. Petersburg, nws yog yooj yim dua mus nrhiav tau ib tug tshiab jellyfish, tsis zoo li cov cheeb tsam.

Khaws hauv lub thoob dej yug ntses (cov lus pom zoo dav dav)

Kev tu kom zoo yog ua tau thaum rov tsim cov vaj tse zoo ib yam li ib puag ncig ntuj. Koj yuav xav tau ib lub tank me me nrog ntim txog 40 litres rau ib khub ntawm jellyfish. Dej zoo dua nruab nrab nyuaj lossis mos, pH nruab nrab. Nyeem ntxiv txog pH thiab dH tsis thiab txoj hauv kev los hloov lawv hauv Hydrochemical muaj pes tsawg leeg ntawm cov dej. Lub kaw lus pom yog qhov tseem ceeb, nws yuav tsum sib txuas ua haujlwm siab thiab tib lub sijhawm tsis tsim dej txav - jellyfish tsis tuaj yeem tiv taus qhov ntws. Tsis tas li ntawd, lawv tuaj yeem raug nqus mus rau hauv lub lim. Cov txiaj ntsig zoo tshaj plaws yog pom los ntawm cov lim hauv qab, nyob rau hauv qhov chaw ntawm cov khoom siv lim yog sib npaug rau thaj tsam ntawm cov av, nws ua kom muaj qhov tseeb ntsug ntawm cov dej thiab tib lub sijhawm saturates nrog oxygen.

Lwm yam khoom siv tseem ceeb muaj lub tshuab ua kom sov, lub teeb pom kev zoo yog hloov kho raws li cov kev xav tau ntawm cov nroj tsuag (shade-hlub lossis lub teeb-hlub). Ib qho aerator yog qhov xav tau, txawm tias thaum siv lub lim hauv qab.

Hauv kev tsim ntawm qhov tsawg kawg nkaus ntawm cov ntsiab lus. Av ntawm me me los yog nruab nrab pebbles nrog cov npoo du los yog cov iav hlaws dai. Nroj tsuag rau koj saj, yuav tsum txwv rau ib los yog ob lub hav txwv yeem, tsis txhob cia lub thoob dej yug ntses overgrow, txwv tsis pub yuav tsis muaj chaw rau jellyfish ua luam dej.

Khoom noj khoom haus

Tag nrho cov jellyfish, nrog rau cov dej qab zib, yog cov tsiaj txhu. Nrog kev pab los ntawm tentacles thiab stinging hlwb nyob rau ntawm lawv, jellyfish tua lawv cov tsiaj. Hauv qhov no, nws yog zooplankton: brine cw, daphnia, copepods (cyclops). Lawv yuav tsum tau ntxiv txhua hnub hauv qhov me me rau hauv thoob dej yug ntses. Qhov no yog ib qho teeb meem loj rau feem ntau aquarists, tsis yog txhua tus yuav muaj peev xwm muab cov khoom tsis cuam tshuam ntawm cov crustaceans.

Tu tub tu kiv

Lub neej voj voog ntawm jellyfish mus dhau ntau theem. Craspedacusta sowerbyi feem ntau reproduces asexually. Ib tug neeg laus tsim ib tug larva - planula (Planula), uas nyob rau hauv nws cov duab thiab loj zoo li ib tug ciliate khau. Lub planula nyob rau hauv qab thiab txuas nws tus kheej mus rau pob zeb los yog dej nroj tsuag. Tom qab ntawd, ib tug polyp yog tsim los ntawm nws, muaj peev xwm loj hlob mus rau hauv ib tug loj colony. Lub neej theem nyob rau hauv daim ntawv ntawm ib tug polyp yog heev hardy, nws muaj peev xwm hloov mus rau ib tug ntau yam ntawm kub, thiab nyob rau hauv tsis zoo tej yam kev mob (piv txwv li, lub sij hawm los txog ntawm lub caij ntuj no nyob rau hauv temperate latitudes) nws tsim ib tug podocyte (podocysts) - a hom kev tiv thaiv capsule, zoo ib yam li lub hom phiaj rau lub cyst hauv cov kab mob.

Ib tus neeg laus tsuas yog pom nyob rau hauv ib puag ncig uas tsim nyog rau nws thiab ntawm qhov dej kub siab tshaj 25 degrees; Nyob rau hauv lwm yam mob, ib tug jellyfish yuav siv sij hawm ntau lub caij nyob rau hauv daim ntawv ntawm ib tug polyp. Nws yog qhov tshwj xeeb no uas piav qhia txog qhov kev cia siab tsis txaus ntseeg ntawm cov dej qab zib jellyfish hauv txhua lub cev dej, lossis txawm tias lawv qhov tsos uas jellyfish tsis tau pom ua ntej. Yog li, thaum lub caij ntuj sov txawv txav hauv Russia xyoo 2010, Craspedacusta sowerbyi tau pom nyob rau hauv Moskva River.

Nyob hauv tsev, nws muaj peev xwm ua tiav tag nrho lub voj voog ntawm kev yug me nyuam jellyfish los ntawm polyp mus rau tus neeg laus, qhov teeb meem tseem ceeb hauv kev muab zaub mov noj. Yog tias tus neeg laus jellyfish yos hav zoov ntawm nws tus kheej, tom qab ntawd cov polyp, nyob rau hauv ib qho chaw, tsuas yog nyob rau hauv cov kev muaj peev xwm no, uas txhais tau hais tias qhov concentration ntawm daphnia, brine cw, thiab copepods yuav tsum loj dua kom nws muaj peev xwm noj tau zoo thiab loj hlob.