Qhov tseeb txog yuav ua li cas lub jellyfish tsiaj

Rau centuries, cov neeg tau sim broaden kuv horizons, kawm txog lub ntiaj teb no, mus nrhiav tau cov lus teb rau lawv cov lus nug ntau. Yuav ua li cas yog lub ntsiab ntawm lub neej thiab hav zoov? Puas muaj ib tug ntau dua vim li cas? Yuav ua li cas tshwm sim tom qab kev tuag? Nyob rau cov teeb meem guessing lub loj tshaj minds ntawm lub ntiaj teb no thoob plaws nws lub neej. Nyob rau hauv no tsab xov xwm peb yuav saib, tej zaum, tsis yog li ntawd philosophical, ntau mundane, tab sis tsis muaj tsawg lo lus nug nthuav. Peb tham txog lub jellyfish, thiab ntau yeej, yuav ua li cas yug jellyfish.

tus tswv ntawm lub seas

Lawv muaj tsis plaw, tsis muaj pob txha, tsis muaj ntshav. Cuaj kaum, lawv cov tsos prospered thiab nquag proliferate. Ntau tshaj rau puas lab lub xyoo lawv nyob rau hauv lub deepest thiab tsaus ntuj tshaj plaws ua si nraum zoov ntawm lub hiav txwv. Tam sim no lawv swarms hloov ntau yam ntaub ntawv ntawm lub neej thiab kev rhuav tseg cov dej ecosystems. Yog, koj nyeem hais tias txoj cai, nyob rau hauv no tsab xov xwm uas peb yuav tham txog qhov zoo nkauj, mysterious thiab cov creatures - jellyfish. Yog hais tias koj ntxiv ib co specifics - unveil lub veil ntawm secrecy thiab qhia rau koj txog yuav ua li cas muab lub jellyfish.

Zoo creation ntawm xwm los yog ib tug ruthless killer?

Muaj ntau xav tias kev ruaj ntseg kiag jellyfish creatures. Tab sis nws tsis yog li ntawd! Lawv - txaus ntshai txhom, uas pub nyob rau hauv cov hiav txwv inhabitants (ntau crustaceans, zooplankton, caviar, etc ...). Medusa siv ib cov riam phom - lawv tentacles - nyob rau hauv thiaj li yuav tau khoom noj khoom haus. Koj puas xav tias cov tentacles yog kev ruaj ntseg kiag rau tib neeg? Yeej tsis tau. Ntxais ntxais hlwb, uas nyob rau ntawm lawv, thaum nyob rau hauv kev sib cuag nrog tib neeg daim tawv nqaij yog tshuav mob kub yus. Tab sis qhov no yog tsis yog qhov phem tshaj. Muaj tsawg hom jellyfish, kev sib cuag nrog uas yuav ua tau kom tuag. Cov no muaj xws hiav txwv nkawj, Portuguese nkoj thiab Nomura jellyfish.

Raws li twb koj yuav to taub, lub jellyfish yog tsis raws li phem li no mas thaum xub thawj siab ib muag. Koj tsis ntseeg qhov no? Raws li cov pov thawj, peb coj tej xwm txheej uas coj qhov chaw nyob rau hauv Nyiv rau ntau tshaj 10 xyoo. Japanese ntug dej hiav txwv vim tas mus li dej nyab jellyfish Nomura tau los ua ib tug neeg tuag tsam. Yuav ua li cas yog vim li cas rau tej yam kev ua si? Peb xav tib lo lus nug, kev soj ntsuam los ntawm Hiroshima University. Nyob rau hauv thiaj li yuav nrhiav tau tawm yog dab tsi twb mus, kuv yuav tsum tau to taub thiab kawm tau li cas lub jellyfish proliferate. Tab sis tam sim no Japanese zaum paub tseeb hais tias cov culprit yog ntiaj teb no ua kom sov. Kuv muaj tsis muaj lub tswv yim yuav ua li cas lub kub sawv vim qhov kev nce rau hauv lub xov tooj ntawm jellyfish? Yuav kom to taub qhov no, nws yog tsim nyog los delve rau hauv qhov xwm ntawm cov creatures, kawm tau li cas rau yug jellyfish. Qhov no yuav pab tau koj nyob rau hauv no tsab xov xwm.

Yuav ua li cas yug jellyfish?

Cov txiv tsim phev, ib tug poj niam - qe. Thaum lub sij hawm fusion ntawm cov phev thiab qe hlwb tsim planula, khom rau hauv qab. Yuav ua li cas yog nws? Planula, los yog, ntau tsuas, lub kab - ib theem ntawm lub neej voj voog ntawm ib co tsiaj. Raws li ib tug txoj cai, thaum lub sij hawm txoj kev loj hlob ntawm lub kab raug rau ntau yam metamorphoses thiab transformations. Yog li ntawd, planula jellyfish puv mus rau hauv ib tug polyp, uas yog ib tug sawv cev ntawm asexual tiam. Thaum ib tug polyp nce mus txog maturity ntawm nws los ntawm budding hluas creatures uas yog pib tuaj tawm.

Lub neej mus los yog lub jellyfish metagenesis. Raws li tej zaum koj yuav paub los ntawm ib lub tsev kawm li hoob biology kawm, yog ib daim ntawv ntawm lub neej voj voog, uas yog xam qhovkev nyob rau hauv ib co tsiaj. Metagenesis essence lies nyob rau hauv lub fact tias asexual tiam thiab ntau tiam neeg cov me nyuam kev sib deev, tsis tu ncua lwm.

Hauj lwm jellyfish qe, hom

Raws li twb tau piav saum toj no, feem ntau jellyfish me nyuam kev sib deev. Txawm li cas los, feem ntau - hais tias yog tsis yog txhua txhua. Nyob rau hauv cov xwm, muaj hom uas cov me nyuam los ntawm budding. Xav paub ntau ntxiv txog lawv koj ua tau nyob rau hauv no ib feem ntawm tsab xov xwm.

Ib txhia hom hydroid medusae tau muab los ntawm transverse division los yog budding. Hydroid jellyfish - me me (txog li peb centimeters) tsiaj txhu, uas muaj tentacles, me me campanulate kaus thiab ib tug ntev proboscis ncauj. Tej zaum qhov no particular hauv chav kawm ntawv ntawm Hydrozoa thiab qhov xaus. Zuag qhia tag nrho hydroid jellyfish yog heev uas zoo sib xws rau lawv cov counterparts. Lawv kuj txhom pub mas crustaceans muaj tshuam tib cov qauv thiab thiaj li nyob. Qhov txawv tsuas yog nyob rau hauv tus qauv ntawm tu tub tu kiv.