Cov cnidarian phylum pawg ntau dua 10,000 hom tsiaj hauv dej, uas, nyob ntawm seb hom, nyob hauv lub cev ntsev lossis dej tshiab, txawm hais tias feem ntau nyob rau yav dhau los. Hauv cov no peb pom cov peculiar jellyfish, uas muaj ntau yam. Ib qho ntawm lawv yog Scyphozoa, uas feem ntau hu ua jellyfish tiag tiag thiab tsuas yog dej hiav txwv. Ntawm cov no yog luminescent jellyfish (Pelagia noctiluca), uas muaj ntau heev nyob rau qee thaj chaw maritime thiab hais txog qhov uas peb nthuav tawm cov ntaub ntawv hauv peb lub xaib. Ua siab ntev thiab nyeem kom paub nws cov ntaub ntawv tseem ceeb tshaj plaws.
Txoj hmoo ntawm lub luminescent jellyfish
Cia peb kawm txog cov yam ntxwv tseem ceeb ntawm luminescent jellyfish hauv qab no:
- Lub luminescent jellyfish has radial symmetry, as is common in the group.
- Cov paj hlwb, digestive, thiab ua pa systems yog primitive: tab sis muaj peev xwm ua tau yooj yim zog los txhawb lub jellyfish.
- Cov ntaub so ntswg muab faib ua peb: txheej epidermis, puab dermis, thiab ib txheej hu ua gelatinous mesoglea, uas zoo ib yam li ib yam. ntawm pob txha mos, tab sis tsawg compact.
- Nws tsuas muaj ib qhov qhib hauv lub cev: uas sib haum rau qhov ncauj qhov ntswg, pub mis thiab rau excretion.
- Nws muaj plaub lobes: lawv hu ua lub qhov ncauj caj npab thiab muaj feem xyuam nrog lub cev qhib uas peb tau hais.
- Lub kaus muab faib ua yim lub lobes: cov duab tuaj yeem yog tswb lossis hemispherical.
- Color varies: los ntawm ntshav, lub teeb xim av, reddish xim av mus rau lub teeb daj.
- Lub tswb yog ciam teb los ntawm ib tug wavy zoo: yim tentacles nyob rau hauv nws, heev elastic thiab nyias nyob rau hauv kev ntxhib los mos; cov no muaj lub zog ntse, dhau los ntawm nws inoculates nws cov co toxins.
- Cov ntaub so ntswg rhiab nyob rau hauv lub lobes: uas yog lub teeb thiab tsw receptors, yog li tom kawg yog ib hom chemoreceptors.
- Lawv muaj sib txawv gonads: yog txiv neej thiab poj niam.
- Lub peculiar feature ntawm no jellyfish thiab los ntawm nws lub npe originates, yog nws luminescence muaj peev xwm: uas yog activated thaum tus tsiaj cuam tshuam. los yog pom nyob rau hauv dej nrog ib co txav. Nws tuaj yeem zais cov khoom zoo li jelly uas tseem luminescent. Qhov no tshwm sim vim muaj cov protein nyob hauv cov tsiaj uas muaj peev xwm ua raws li qhov no.
Luminescent jellyfish nyob
Cov luminescent jellyfish muaj thoob ntiaj teb faib, tam sim no nyob rau hauv Atlantic, Pacific thiab Indian Oceans. Nws yog faib feem ntau hauv cov dej qhib, tab sis kuj nyob rau hauv ntug dej hiav txwv, muaj peev xwm hloov mus rau yuav luag txhua qhov chaw ntawm thaj chaw marine, suav nrog cov dej kub, sov lossis dej kub. Nws yog ib qho uas pom cov luminescent jellyfish sab qaum teb ntawm Equator, North Hiav Txwv, Atlantic Canada, Gulf of Mexico, Mediterranean thiab Australia.
Koj puas xav mus saib cov kab lus hauv qab no ntawm Cov jellyfish nyob qhov twg? xav paub ntxiv txog lawv.
Kev lis kev cai ntawm Luminescent Jellyfish
One of the habits of the luminescent jellyfish is the formation of large groups of individuals, which can add up to thousands of jellyfish. Txhawm rau txhawb nqa, lawv ua kom nrawm nrawm ntawm qhov qis ntawm lub tswb, uas pab txhawb lawv tus kheej. Cov gelatinous mesoglea cov ntaub so ntswg kuj txhawb kev buoyancy ntawm cov tsiaj no.
Raws li muaj nyob rau hauv pawg cnidarian, cov jellyfish no muaj ib tug tshwj xeeb organelle hu ua ib tug nematocyst, uas muaj peev xwm ntawm zais ib yam tshuaj lom, uas lawv inoculate nyob rau hauv lawv cov tsiaj, tab sis lawv kuj ua nws yog tias lawv cuam tshuam. Nyob rau hauv cov ntaub ntawv ntawm tib neeg, txawm hais tias nws tsis yog ib hom kab mob tuag taus ntawm jellyfish, nws ua rau cov tawv nqaij mob, uas tuaj yeem ua rau mob me ntsis. Feem ntau qhov no tshwm sim hauv qee qhov chaw ntug dej hiav txwv thaum lub sijhawm cov neeg ncig tebchaws mus ncig ntawm ntug hiav txwv, vim tias nws yog ib qho ntawm cov tsiaj no thaum kawg raug tso tseg hauv qee thaj chaw.
jellyfish txav li cas? Tsis txhob nco cov ncej no ntawm peb lub xaib uas peb piav qhia rau koj.
Glowing Jellyfish Feeding
No jellyfish, zoo li tus so, nquag tua nws cov tsiaj Ua li ntawd, nws siv nws cov tentacles, uas yog cov hlwb hu ua cnidocytes.. Txhua lub hlwb no tau nruab nrog cov nematocysts, uas ua haujlwm zoo li lub ntsej muag ntse, uas nkag mus rau hauv cov tsiaj thiab ib zaug hauv lawv inoculate cov tshuaj lom, uas xaus rau. cuam tshuam tus neeg raug tsim txom thiab tswj tau yooj yim.
Cov khoom noj thiab kev tiv thaiv no muaj zog heev uas lawv tuaj yeem tawg los ntawm lub plhaub ntawm cov roob ris, uas lawv tuaj yeem noj tau.
Kev zom ntawm cov jellyfish no yog nqa tawm intracellularly thiab extracellularly, nyob rau hauv cov ntaub so ntswg tshwj xeeb rau kev pub noj, uas muaj nyob rau hauv lub plab hnyuv kab noj hniav. Ua li no, nws tuaj yeem haus ntau hom tsiaj, uas peb tuaj yeem hais:
- Zooplankton
- Nqaij ntses
- Crustaceans
- Eggs
- Lwm yam jellyfish
Xav paub ntxiv txog dab tsi jellyfish noj? Peb tso koj cov lus hauv qab no uas yuav txaus siab rau koj.
Lub luminescent jellyfish nyias muaj nyias kev sib deev Rau kev yug me nyuam, ob leeg txiv neej thiab poj niam tso lawv gametes rau hauv dej, qhov chaw fertilization, uas yog vim li cas nws yog ntawm hom sab nraud Cov qe thiab cov phev raug tso tawm los ntawm tus tsiaj lub qhov ncauj los ntawm gonads uas nyob rau hauv nruab nrab ntawm lub cev.
Thaum fertilization tshwm sim, ib tug txawv embryo hu ua ib tug planula yog tsim, uas muaj cilia uas tso cai rau nws ua luam dej dawb, txav los ntawm qhib dej. Tsis zoo li lwm cov jellyfish, lub luminescent tsis muaj polyp sessile theem , tab sis es tsis txhob yog los ntawm lub planula, daim ntawv hu ua ephyrae, uas sib haum mus rau ib tug hluas jellyfish, uas tom qab ib tug txheej txheem ntawm kev loj hlob thiab kev loj hlob, ua ib tug neeg laus. Ua li no lub voj voog kev loj hlob tiav, uas cov me nyuam tsis muaj hom kev saib xyuas niam txiv
Txoj kev txuag ntawm luminescent jellyfish
Txawm li cas los xij, nws muaj feem ntau tias, zoo li nrog rau lwm hom jellyfish, nws tsis muaj kev phom sij. Ntawm qhov tsis sib xws, vim muaj qhov txo qis hauv cov tsiaj nyeg thiab cov kev hloov pauv hauv cov txheej txheem marine vim kev hloov pauv huab cua, cov pej xeem theem ntawm cov tsiaj tau nce zuj zus. Thaum muaj qhov no tshwm sim, nws yuav tsis tsim nyog, vim yuav tsum muaj kev sib npaug ntawm txhua pawg tsiaj.
