Hom molluscs: yam ntxwv thiab piv txwv

Zoo Siab

• dab tsi yog molluscs
• Molluscs: yam ntxwv
• kev faib tawm ntawm molluscs
• Piv txwv li qwj ntses
• 1. Chaetoderma elegans
• 2. Neomenian carinata
• 3. Hiav txwv kab laum (Chiton articulatus)
• 4. Antalis vulgaris
• 5. Coquina (Donax trunculus)
• 6. European Flat Oyster (Ostrea edulis)
• 7. Caracoleta (Helix aspersa)
• 8. Caum Octopus (Octopus vulgaris)
• Lwm hom molluscs

Koj molluscs lawv yog ib pab pawg loj ntawm cov tsiaj tsis muaj pob txha, yuav luag muaj ntau yam li cov tsiaj txhu. Txawm hais tias lawv yog cov tsiaj sib txawv heev, nws muaj peev xwm nrhiav tau qee tus yam ntxwv uas faib lawv txawv. Koj puas xav paub ntau ntxiv txog lawv?

Hauv kab lus no los ntawm PeritoAnimal, cia peb paub hom molluscs uas twb muaj lawm, lawv tus yam ntxwv thiab kev faib tawm, thiab peb tseem yuav muaj cov npe molluscs rau koj kom paub me ntsis ntawm ntau haiv neeg. Nyeem ntawv!

dab tsi yog molluscs

cov molluscs yog invertebrates uas nws cov ntawv suav tau zoo ib yam li cov annelids, tab sis nws lub cev laus tsis tau muab cais, txawm hais tias qee qhov yuav raug tiv thaiv los ntawm lub plhaub. Nws yog pab pawg coob heev ntawm cov tsiaj tsis rov qab los tom qab arthropods. Muaj txog 100,000 hom, ntawm 60,000 yog gastropods. Ib qho ntxiv, 30,000 hom tsiaj txhu tseem paub.

Feem ntau ntawm cov tsiaj no yog molluscs. hiav txwvbenthicuas yog, lawv nyob hauv qab hiav txwv. Ntau lwm tus yog cov av, zoo li qee cov qwj. Qhov kev sib txawv loj uas muaj nyob txhais tau tias cov tsiaj no tau ua rau muaj coob tus neeg nyob sib txawv thiab yog li ntawd txhua qhov kev noj haus muaj nyob hauv ntau hom molluscs.

Kuj pom hauv PeritoAnimal uas hom corals, hiav txwv thiab thaj av.

Molluscs: yam ntxwv

Molluscs yog pab pawg sib txawv heev, thiab nrhiav cov yam ntxwv rau txhua tus ntawm lawv yog txoj haujlwm txaus ntshai. Yog li ntawd, peb yuav nthuav qhia cov yam ntxwv zoo sib xws, txawm hais tias muaj ntau qhov kev zam:

Lub cev nqaij daim tawv tau muab faib ua plaub cheeb tsam tseem ceeb:

• lub tsho tiv no: yog dorsal nto ntawm lub cev uas tuaj yeem tiv thaiv kev tiv thaiv. Qhov kev tiv thaiv no muaj keeb kwm chitinous thiab cov protein uas tom qab ntawd tsim cov limestone tso nyiaj, spikes lossis lub plhaub. Qee cov tsiaj uas tsis muaj lub plhaub muaj tshuaj tiv thaiv kab mob.
• locomotive ko taw: yog ciliated, cov leeg thiab nrog cov qog ua qog. Los ntawm qhov ntawd, ob peb khub ntawm cov leeg dorsoventral tshwm sim uas pab txhawm rau thim taw thiab kho nws rau lub tsho.
• cheeb tsam cephalic: hauv cheeb tsam no peb pom lub paj hlwb, lub qhov ncauj thiab lwm yam kabmob hauv nruab nrog cev.
• kab noj hniav: ntawm no yog nyob ntawm osphradia (lub cev tsis zoo), lub cev orifices (qhov quav) thiab cov pos, hu ua ctenids.

O shellfish digestive apparatus muaj qee tus yam ntxwv:

• Plab: cov tsiaj no muaj kev zom zaub mov sab nraud. Cov khoom zom zom tau raug xaiv los ntawm cov qog zom zaub mov (hepatopancreas), thiab cov khoom seem nkag mus rau hauv txoj hnyuv kom tsim cov quav.
• radula: lub cev no, nyob sab hauv lub qhov ncauj, yog daim nyias nyias ua daim kab xev toothed, txhawb los ntawm odontophore (pawg ntawm cov pob txha mos sib xws) thiab txav los ntawm cov leeg musculature. Nws qhov tsos thiab txav tau zoo ib yam li tus nplaig. Cov hniav chitinous uas radula tau rhuav cov zaub mov. Cov hniav uas muaj hnub nyoog thiab hnav tawm poob, thiab cov tshiab tsim nyob rau hauv lub hauv paus hnab. Ntau solenogastros tsis muaj radula, thiab tsis muaj bivalve ua.

Txawm li cas los xij, ntxiv rau koj circulatory system yog qhib, tsuas yog lub plawv thiab cov kabmob ze tshaj plaws muaj cov hlab ntsha. Lub plawv tau muab faib ua ob lub atria thiab lub ventricle. Cov tsiaj no tsis muaj cuab yeej ua haujlwm tawm txiav txim siab Lawv muaj metanephrids uas koom tes nrog lub plawv, uas yog ultrafilter, tsim thawj cov zis uas rov nqus tau hauv cov nephrids, uas tseem muaj lub luag haujlwm tswj hwm cov dej. O kev ua me nyuam muaj ob lub gonads nyob rau pem hauv ntej ntawm pericardium. Gametes raug tshem tawm mus rau kab noj hniav daj, feem ntau txuas nrog cov nephrids. Molluscs tuaj yeem yog dioecious lossis hermaphrodite.

kev faib tawm ntawm molluscs

Mollusc phylum faib ua yim chav kawm, thiab txhua tus muaj hom tsiaj nyob. Kev faib tawm ntawm molluscs yog:

• Chav kawm Caudofoveata: yog molluscs hauv cua nab. Lawv tsis muaj lub plhaub, tab sis lawv lub cev tau npog nrog calcareous thiab aragonitic spikes. Lawv nyob faus rau hauv av pem hauv ntej.
• Solenogasters Chav Kawm: lawv yog tsiaj zoo ib yam rau chav kawm dhau los, ntau npaum li keeb kwm lawv tau suav nrog hauv tib pab pawg. Lawv kuj zoo li tus kab mob, tab sis hloov chaw nyob, lawv nyob dawb hauv dej hiav txwv, pub mis rau cnidarians. Cov tsiaj no tseem muaj calcareous thiab aragonitic spikes.
• Monoplacophore Chav Kawm: yog cov molluscs qub heev. koj lub cev yog npog los ntawm ib lub plhaub, zoo li ib nrab clam, tab sis lawv muaj cov leeg nqaij zoo li qwj.
• Polyplacophora chav kawm: Thaum xub thawj siab ib muag, lawv zoo ib yam li qee hom kab noj, xws li armadillos-de-garden. Lub cev ntawm cov molluscs no tau npog los ntawm txheej cov phaj txhawb nrog magnetite. Lawv kuj tseem muaj cov leeg nqaij taw taw thiab radula.
• Chav kawm Scaphopoda: cov molluscs muaj lub cev ntev heev, nrog rau lawv lub plhaub, uas zoo li lub suab raj, thiab yog vim li cas lawv thiaj li raug hu ua fang shells. Nws yog ib hom paub zoo tshaj plaws ntawm cov ntses molluscs.
• Bivalvia chav kawm: bivalves, raws li lub npe siv, yog molluscs uas nws lub cev yog nruab nrab ntawm ob lub li qub lossis lub plhaub. Ob qhov qub kaw ua tsaug rau kev ua ntawm qee cov leeg thiab ligaments. Hom paub zoo tshaj ntawm bivalve molluscs yog clams, mussels thiab oysters.
• Chav Gastropoda: gastropods paub qwjthiab slugs, ob qho tib si hauv av thiab hauv hiav txwv. Lawv muaj qhov sib txawv ntawm thaj chaw cephalic, cov leeg nqaij rau nkag los lossis ua luam dej, thiab lub plhaub dorsal. Lub plhaub no yuav tsis nyob hauv qee hom.
• Chav Kawm Cephalopoda: pawg cephalopod yog tsim los ntawm octopuses, sepia, squid thiab nautilus. Txawm hais tias nws yuav zoo li cas, lawv txhua tus muaj lub plhaub. Qhov pom tseeb tshaj plaws yog nautilus, vim nws yog sab nraud. Sepia thiab squid muaj lub plhaub loj dua lossis tsawg dua hauv. Lub plhaub ntawm octopus yuav luag yog vestigial, tsuas yog ob txoj kab limestone nyias nyob hauv nws lub cev. Lwm tus yam ntxwv tseem ceeb ntawm cephalopods yog tias, hauv chav kawm no, cov leeg nqaij taw tam sim no hauv molluscs tau hloov pauv mus rau hauv tentacles. Tej zaum yuav muaj ntawm 8 thiab ntau dua 90 lub tsev pheeb suab, nyob ntawm seb hom mollusc.

Piv txwv li qwj ntses

Tam sim no koj paub cov yam ntxwv thiab kev faib tawm ntawm molluscs. Tom ntej no, peb yuav piav qhia txog qee yam hom qwj ntses thiab piv txwv:

1. Chaetoderma elegans

zoo li cab thiab tsis muaj lub cev, qhov no yog ib yam ntawm cov molluscs uas koom rau hauv chav kawm Caudofoveata. Nws muaj thaj chaw faib chaw sov nyob hauv Dej Hiav Txwv Pacific. tuaj yeem nrhiav tau ntawm qhov tob ntawm 50 meters ntau tshaj 1800 meters.

2. Neomenian carinata

Thiab lwm tus vermiform mollusc cov, tab sis lub sijhawm no nws yog tsev neeg Solenogastrea. Hom molluscs no pom nyob hauv qhov tob ntawm 10 thiab 565 meters, nyob ywj pheej hauv Dej Hiav Txwv Atlantic, ntawm ntug dej hiav txwv ntawm Portugal.

3. Hiav txwv kab laum (Chiton articulatus)

Hiav txwv kab laum yog ib yam molluscpolyplacophora endemic rau Mexico. Nws nyob hauv pob zeb pob zeb ntawm thaj tsam intertidal. Nws yog hom tsiaj loj, mus txog 7.5 centimeters ntev ntawm cov hom molluscs.

4. Antalis vulgaris

Nws yog ib hom ntawm scaphopod mollusk nrog tubular lossis prey-puab lub plhaub. Nws cov xim yog dawb. Nyob hauv xuab zeb thiab av nkos substrates ntiav, nyob hauv thaj tsam intertidal. Hom molluscs no tuaj yeem pom nyob ntawm ntug dej hiav txwv Atlantic thiab Mediterranean.

5. Coquina (Donax trunculus)

Coquinas yog lwm hom qwj ntses. Lawv yog bivalves me me, lawv feem ntau nyob ntawm ntug dej hiav txwv Atlantic thiab Mediterranean. Lawv nrov heev hauv Mediterranean zaub mov. Lawv tuaj yeem nyob hauv thaj chaw subtidal txog 20 meters tob.

6. European Flat Oyster (Ostrea edulis)

Oysters yog ib qho ntawm cov hom molluscsbivalves ntawm qhov kev txiav txim Ostreoid. Hom tsiaj no tuaj yeem ntsuas txog 11 centimeters thiab tsim tau niam ntawm pearl pearls. Lawv tau faib los ntawm Norway mus rau Morocco thiab Mediterranean. Tsis tas li ntawd, lawv tau cog qoob loo hauv aquaculture.

Saib qee qhov piv txwv ntawm cov tsiaj txhu thiab cov tsiaj tsis muaj sia nyob hauv kab lus PeritoAnimal no.

7. Caracoleta (Helix aspersa)

qob is a zoogastropod mollusk nrog lub ntsws ua pa, uas yog, nws tsis muaj gills thiab nyob hauv ntiaj teb saum npoo av. Lawv xav tau cov dej noo ntau, thiab thaum lawv tsis xav tau, lawv nkaum sab hauv lawv lub plhaub rau lub sijhawm ntev los tiv thaiv kom qhuav.

8. Caum Octopus (Octopus vulgaris)

Cov octopus nquag yog a cephalopod uas nyob hauv Dej Hiav Txwv Atlantic thiab Hiav Txwv Mediterranean. Nws ntsuas txog ib 'meter' qhov ntev thiab tuaj yeem hloov xim ua tsaug rau nws chromatophores. Nws muaj tus nqi siab rau gastronomy.

Lwm hom molluscs

Koj puas xav paub ntxiv? Tom ntej no, peb yuav hais txog lwm yam hom ntawm molluscs:

• Scutopus robustus;
• Scutopus ventrolineatus;
• Laevipilina cachuchensis;
• Laevipilina rolani;
• Tonicella kab mob;
• Diffuse Chiton lossis Phantom Chiton (Granular acanthopleura);
• Tshuaj tua kab mob;
• Dej Mussel (margaritifera margaritifera);
• Pearl mussel (ntiag tug siv lead ua);
• Iberus gualtieranus alonensis;
• Iberus gualtieranus gualtieranus;
• African Giant Qwj (Achatina sooty);
• Sepia-ntau (Sepia kev kho mob);
• Squid loj (Architeuthis ob);
• Giant Pacific Maumoos (Enteroctopus dofleini);
• Nautilus belauensis.

Kawm paub ntau ntxiv txog tsiaj ntiaj teb, txheeb xyuas peb kab lus ntawm hom kab laug sab.

Yog tias koj xav nyeem ntau cov ntawv zoo ib yam li Hom molluscs: yam ntxwv thiab piv txwv, peb pom zoo kom koj nkag mus rau peb ntu Kev Xav Paub ntawm tsiaj ntiaj teb.