Jellyfish yog ib hom tsiaj uas muaj sia nyob uas nyob hauv hiav txwv thiab dej hiav txwv. Lawv tuaj yeem qhuas tsis kawg. Cov jellyfish yog dab tsi, lawv nyob qhov twg, lawv zoo li cas, nyeem hauv kab lus no.
Cov ntaub ntawv dav dav txog jellyfish
Lawv koom nrog cov coelenterates thiab yog ib feem ntawm lawv lub neej voj voog, uas muaj ob theem: asexual thiab kev sib deev. Jellyfish cov neeg laus yog dioecious, lawv kev yug me nyuam tshwm sim kev sib deev. Lub luag hauj lwm ntawm tus txiv neej yog cheb cov khoom me nyuam mus rau hauv dej, uas tam sim ntawd nkag mus rau hauv lub cev ntawm tus poj niam los yog fertilized ncaj qha rau hauv dej. Nws nyob ntawm hom jellyfish. Cov larvae uas tshwm sim yog hu ua planulas.
Lawv muaj peev xwm nthuav tawm cov duab phototaxis, uas yog, lawv txav mus rau qhov chaw teeb pom kev zoo. Obviously, lawv yuav tsum tau nyob rau hauv dej rau qee lub sij hawm, thiab tsis tam sim ntawd poob mus rau hauv qab. Lub neej ywj pheej ntawm lub planula tsis kav ntev, txog ib lub lis piam. Tom qab ntawd, lawv pib nyob rau hauv qab heev, qhov chaw uas lawv txuas mus rau lub substrate. Ntawm no lawv tau hloov mus rau hauv polyp lossis syphistoma, kev tsim tawm uas tshwm sim los ntawm budding.
Qhov nohu ua asexual reproduction, uas muaj peev xwm yuav nqa tawm indefinitely kom txog rau thaum cov kev cai rau tsim ntawm jellyfish tuaj. Maj mam, lub cev ntawm cov polyp tau txais kev hloov pauv, tom qab ntawd cov txheej txheem ntawm strobilization tshwm sim thiab tsim cov hluas disk jellyfish - ethers.
Lawv feem ntau yog cov plankton. Tom qab ntawd, lawv loj hlob thiab dhau los ua neeg laus jellyfish. Yog li, rau asexual reproduction - budding, dej kub tej zaum yuav qis. Tab sis, tau kov yeej ib qho kev kub ntxhov, dioecious jellyfish tau tsim.
Class of hydroid jellyfish
Cov chaw suav nrog cov neeg nyob ib leeg lossis cov neeg nyob hauv dej hiav txwv. Yuav luag txhua tus ntawm lawv yog cov tsiaj txhu. Lawv cov zaub mov yog plankton, ntses larvae thiab kib. Cov kab mob plab hnyuv jellyfish naj npawb kaum txhiab hom. Lawv muab faib ua cov chav kawm: hydroid, scyphoid thiab coral polyps. Thawj ob chav kawm feem ntau yog muab tso ua ke rau hauv ib hom kab mob jellyfish.
Hydroid plab hnyuv jellyfish yog cov neeg sawv cev ntawm cov dej tshiab polyps. Lawv qhov chaw nyob yog pas dej, pas dej thiab dej ntws. Lub cev muaj ib tug cylindrical zoo thiab ib leeg yog txuas mus rau lub substrate. Lub opposite kawg yog crowned nrog lub qhov ncauj nrog tentacles nyob ib ncig ntawm nws. Fertilization tshwm sim hauv lub cev. Yog hais tias lub hydra raug txiav mus rau hauv ntau daim los yog tig mus rau hauv, nws yuav loj hlob thiab nyob. Qhov ntev ntawm nws lub cev yog ntsuab lossis xim av xim mus txog ib centimeter. Hydra tsis nyob ntev, tsuas yogib xyoos.
Scyphoid jellyfish
Lawv yog cov ntab ntab thiab muaj qhov sib txawv. Qhov loj ntawm qee hom tsuas yog ob peb millimeters, thaum lwm tus yog ob mus rau peb meters. Ib qho piv txwv yog cyanide. Nws cov tentacles tuaj yeem ncav cuag li nees nkaum meters ntev. Lub polyp yog tsim los tsis zoo los yog tsis muaj kiag li. Lub plab hnyuv kab noj hniav yog muab faib ua chambers los ntawm partitions.
Scyphoid jellyfish tuaj yeem nyob ntev li ob peb lub hlis. Kwv yees li ob puas hom tsiaj nyob hauv cov dej kub thiab dej kub ntawm cov dej hiav txwv. Muaj qee cov jellyfish uas tib neeg noj. Cov no yog cornerots thiab aurelias, lawv yog s alted. Ntau hom scyphoid jellyfish ua rau kub hnyiab thiab liab ntawm lub cev yog tias kov. Piv txwv li, hirodrofus ua rau tib neeg tuag taus.
Medusa Aurelia eared
Muaj ntau hom jellyfish. Ib daim duab ntawm ib tug ntawm lawv yog nthuav tawm rau koj mloog. Qhov no yog scyphoid jellyfish Aurelia eared. Nws ua tsis taus pa yog nqa tawm los ntawm tag nrho cov pob tshab thiab gelatinous lub cev, nyob rau hauv uas muaj nees nkaum plaub qhov muag. Raws li tag nrho cov cheeb tsam ntawm lub cev yog rhiab me ntsis lub cev - ropalia. Lawv perceive lub impulses ntawm ib puag ncig. Nws tuaj yeem yog qhov kaj.
Medusa noj zaub mov thiab tshem tawm nws cov seem hauv lub cev los ntawm qhov qhib qhov ncauj, nyob ib puag ncig uas muaj plaub lub qhov ncauj. Lawv muaj cov kab mob stinging uas muaj cov tshuaj tua hluav taws uas ua haujlwm tiv thaiv kab mob jellyfish thiab pab kom tau zaub mov. Aurelia tsis hloov mus rau lub neej hauv av, vim nws muaj dej.
MedusaCornerot
Nws nrov npe hu ua "Umbrella". Qhov chaw nyob ntawm jellyfish yog Dub, Azov thiab B altic Seas. Cornerot captivates nrog nws txoj kev zoo nkauj. Lub cev ntawm jellyfish yog translucent nrog xiav los yog ntshav edging, reminiscent ntawm lub teeb los yog kaus. Nws peculiarity yog tias feem ntau nws ua luam dej ntawm nws sab thiab tsis muaj qhov ncauj. Hloov chaw, qhov me me txoj kab uas hla yog tawg rau ntawm cov hniav uas nws pub. Cornerot nyob thiab yug me nyuam hauv dej ntawm qhov tob tob. Yog tias koj yuam kev los ntawm jellyfish, koj tuaj yeem hlawv.
Nyob zoo ib yam
Cov kws tshawb fawb los ntawm cov neeg Ixayees tau ua pov thawj tias cov jellyfish muaj nyob hauv Golan Heights hauv pas dej. Cov menyuam yaus pom lawv thawj zaug. Tom qab ntawd cov ntawv luam ntawm tus kheej tau muab tso rau hauv lub raj mis thiab muab xa mus rau xibfwb Gofen. Nws ua tib zoo kawm lawv hauv chav kuaj. Nws hloov tawm tias qhov no yog ib cheeb tsam hauv zos ntawm ib qho ntawm cov dej tsis qab ntsev jellyfish, uas tau piav qhia hauv tebchaws Askiv thaum ntxov li 1880. Tom qab ntawd cov jellyfish tau pom nyob rau hauv lub pas dej ua ke nrog cov nroj tsuag hauv dej sov. Raws li tus kws tshaj lij, lub qhov ncauj qhib ntawm jellyfish nyob ib puag ncig los ntawm ntau lub hlwb stinging, uas nws ntes cov kab mob planktonic. Rau tib neeg, cov jellyfish no tsis txaus ntshai.
Ntsuab jellyfish
Cov neeg plab hnyuv no nyob hauv dej tsuas yog hiav txwv thiab dej hiav txwv xwb. Tab sis, muaj ib qho kev zam, hu ua Amazonian dej qab zib jellyfish. Nws qhov chaw nyob yog South America, uas yog lub phiab ntawm tus dej loj ntawm lub mainland - Amazon. Li no lub npe. Niaj hnub no, cov tsiaj no tau kis mus rau txhua qhov chaw, thiab heev los ntawm kev sib tsoo, thaum thauj cov ntses los ntawmhiav txwv thiab dej hiav txwv. Lub jellyfish yog me me, ncav cuag tsuas yog ob centimeters nyob rau hauv lub cheeb. Tam sim no nws nyob hauv qeeb, ntsiag to thiab tsis khov dej, dams, kwj dej. Cov zaub mov yog zooplankton.
The biggest jellyfish
Qhov no yog cyanide lossis tsov ntxhuav mane. Hauv qhov xwm txheej, muaj ntau hom jellyfish, tab sis qhov no yog qhov tshwj xeeb. Tom qab tag nrho, nws yog nws uas tau piav qhia los ntawm Conan Doyle hauv nws zaj dab neeg. Qhov no yog ib tug loj jellyfish, uas nws lub kaus ncav cuag ob meters nyob rau hauv lub cheeb, thiab nees nkaum tentacles. Lawv zoo li lub pob tangled ntawm crimson liab.
Hauv nruab nrab ntawm lub kaus yog daj, thiab nws cov npoo yog xim liab. Hauv qab ntawm lub dome yog endowed nrog lub qhov ncauj qhib, nyob ib ncig ntawm uas muaj kaum rau lub qhov ncauj loj lobes. Lawv dai zoo li ntaub thaiv. Cyanea txav qeeb heev, feem ntau ntawm cov dej. Nws yog ib qho active predator, pub rau cov kab mob planktonic thiab me me jellyfish. Habitat - dej txias. Feem ntau, tab sis tsis txaus ntshai. Qhov tshwm sim kub hnyiab tsis tuag, tab sis tuaj yeem ua rau mob liab.
Purple Sting Jellyfish
Cov tsiaj no muaj nyob hauv Dej Hiav Txwv Ntiaj Teb nrog dej sov thiab kub: pom nyob rau hauv Mediterranean thiab Kara Seas, hauv Atlantic thiab Pacific Oceans. Cov hom jellyfish no feem ntau nyob deb ntawm ntug dej hiav txwv. Tab sis qee zaum lawv tuaj yeem tsim cov tsiaj nyob hauv cov dej hiav txwv, thiab sib ntsib ntau ntawm cov ntug hiav txwv dej. Jellyfish tsis tsuas yog mauve nyob rau hauv cov xim. Lawv muaj xim daj lossis daj xim av, nyob ntawm seb lawv nyob qhov twg.
NtsuabCompass
Cov hom jellyfish no xaiv cov ntug dej hiav txwv ntawm Hiav Txwv Mediterranean thiab ib qho ntawm cov dej hiav txwv, Atlantic, ua lawv qhov chaw nyob. Lawv nyob ntawm ntug dej hiav txwv ntawm Turkey thiab United Kingdom. Cov no yog cov jellyfish loj heev, lawv txoj kab uas hla mus txog peb caug centimeters. Lawv muaj nees nkaum plaub tentacles, uas yog teem nyob rau hauv pawg ntawm peb txhua. Cov xim ntawm lub cev yog xim daj-dawb nrog cov xim av xim av, thiab nws cov duab zoo li lub tswb nrov, uas peb caug-ob lobes tau txhais, uas yog xim xim av ntawm cov npoo.
Sab saum toj ntawm lub tswb muaj kaum rau V-zoo li tus duab tshav xim av. Qhov qis ntawm lub tswb yog qhov chaw ntawm lub qhov ncauj qhib, surrounded los ntawm plaub tentacles. Cov jellyfish no muaj tshuaj lom. Lawv cov venom muaj zog heev thiab feem ntau ua rau qhov txhab uas mob heev thiab siv sijhawm ntev los kho.
