Zoo Siab
Cov echinoderms los yog echinodermata Lawv yog cov tsiaj txhu tsis muaj tsiaj txhu tab sis lawv muaj dermoskeleton. Hom tsiaj txhu tsiaj no muaj cov paib ua kom tsis haum lossis cov pob zeb me me uas tawg thoob plaws lub cev. Li no nws lub npe: echinoderm, uas txhais tau tias "daim tawv nqaij uas tau npog nrog pos”.
Cov phaj calcareous tau tsim los ntawm cov calcium carbonate thiab, qee qhov ntawm lawv, sib koom ua ke ib yam li nyob rau hauv cov hnub qub ntses, thaum lwm tus tau welded tsim ib hom plhaub zoo li hauv cov dej hiav txwv.
Cov echinoderms lawv tsuas tuaj yeem nyob hauv hiav txwv ib puag ncig. Cov no txav los ntawm kev nkag mus rau hauv qab ntawm ib puag ncig hiav txwv thiab lawv daim ntawv ntawm kev tsim dua tshiab yog asexual, qee qhov muaj peev xwm rov tsim dua tshiab, zoo ib yam li starfish.
- Nws tuaj yeem pab koj: Arthropod tsiaj.
Raws li lawv yog?
Echinoderms nthuav qhia radial symmetry, tshwj xeeb tshaj yog lawv yog pentaradially symmetric. Ntawd yog, lawv lub cev qhov chaw nyob ib puag ncig ib puag ncig.
Lawv tsis muaj lub taub hau lossis lub hlwb. Txawm li cas los xij, lawv tuaj yeem pom qhov tshwm sim nyob ib puag ncig lawv los ntawm lub cev hlwb uas sau cov ntaub ntawv los ntawm lawv ib puag ncig. Lawv kuj tsis muaj lub plawv txij li thaum lawv cov hlab ntshav qhib.
Piv txwv ntawm echinoderms
- Starfish
- Lub hnub qub Comet lossis Linckia guildingi
- Orthasterias koehleri
- Snuffbox
- Ofiura
- Lily hiav txwv
- Lus Flamenco
- Sib piv
- Lus Flamenco
- Mediterranean Comatula
Piv txwv ntawm echinoderms raws li subspecies
Lilies hiav txwv
- Davidaster rubiginosus
- Endoxocrinus kab mob
- Himerometra robustipinna
- Lamprometra xibtes
- Celtic leptometra
- Ptilometra australis
- Stephanometrist qhia
- Tropiometra carinata yog
Starfish los yog Asteroid. Lawv tau muab cais ua kev txiav txim:
- Hais kom Brisingida, qhov twg muaj 111 hom
- Xaj Forcipulatida, nrog 269 hom
- Txiav txim Paxillosida, 372 hom
- Hais kom Notomyotida, 75 hom
- Txiav txim Spinulosida, 121 hom
- Valvatida xaj, nrog 695 hom
- Txiav txim Velatida, nrog 138 hom
Qee hom yog:
| Asterias forbesi | Linckia ntau yam |
| Crown ntawm pos | Mithrodia nuv ntses |
| Qab zib hnub qub | Nardoa galatheae |
| Lub hnub qub liab | Ophidiasteridae |
| Forcipulatide | Oreasteridae |
| Fromia monilis | Orthasterias koehleri |
| Goniasteridae | Pentaceraster |
| Henricia leviuscula | Pentagonaster |
| Ntshav Henricia | Spinuloside |
| Leiaster loj | Valvatida |
Ofiuras
| Amphiodia occidentalis | Ophioderma panamensis |
| Amphipholis | Ophionereis annulata |
| Amphipholis squamata: kev saib xyuas hauv tsev | Ophiopholis aculeata |
| Amphiura tsob ntoo | Ophiopholis kennerlyi |
| Ophiocoma erinaceus | Ophioplocus tsev neeg |
| Ophiocomina nigra | Ophiothrix paj |
| Ophioderma | Ophiotrix fragilis |
| Ophioderma longicauda | Ophiurida |
Hiav txwv urchins
| Chondrocidaris gigantea | Lub plawv hedgehogs |
| Colobocentrotus atratus | Pebble urchins lossis hoof urchins |
| Paucispinum taub hau | Common hiav txwv urchins |
| Diadematoid | Pencil tip hedgehogs |
| Xuab zeb nyiaj los yog hedgehogs tsis sib xws | Lytechinus semituberculatus |
| Echinometridae | Qos yaj ywm |
| Echinothrix taub hau | Pseudoboletia indiana |
| Parson lub kaus mom hiav txwv dej hiav txwv | Toxopneustidae |
Hiav txwv dib. Lawv tau muab faib ua tsev neeg sib txawv thiab chav kawm:
- Dendrochirotacea
- Aspidochirotacea
- Apodacea
Qee hom yog:
| Actinopyga | Chocolate nti hiav txwv dib |
| Bohadschia Paradoxa | Dub hiav txwv dib |
| Holothuria cinerascens | Psolidae |
| Holothuria pervicax | Sclerodactylidae |
| Leptosynapta tenuis | Stichopus |
| Parastichopus californicus | Synapta maculata |
| Warty hiav txwv dib | Thelenota niam |
