Snails yog gastropod molluscs uas neeg feem coob paub me ntsis txog. Muaj ntau yam hom qwj, tab sis dhau ntawm lawv qhov kev xav paub zoo li lub plhaub, lub neej ntawm cov tsiaj me no yog qhov paub tsis meej rau ntau tus.
Qab Qwj
ZOM ZOM QAB KUV tham nrog koj hais txog qwj,koj yuav tsum paub me ntsis ntxiv txog ntau hom uas muaj nyob. Lawv yog
gastropod molluscs thiab yog cov tsiaj qub tshaj plaws nyob hauv ntiaj teb, vim muaj cov ntaub ntawv sau tseg txog lawv lub neej txij thaum Cambrian.
Ntxiv mus, muaj ntau yam hom qwjnyob ntiaj teb no, terrestrial, marine and freshwater:
Laj snails
Lawv yog cov neeg paub zoo tshaj plaws. Lawv muaj tus yam ntxwv - lub cev zoo li lub plhaub los yog carapace tshaj nws, feem ntau yog kauv-puab. Lawv txav mus los ntawm kev cog lus thiab ua tsaug rau cov slime los yog mucus uas tawm ntawm lawv lub cev. Cov hom sib txawv muaj ntau hom kev noj haus. Muaj qwj herbivores uas noj nplooj, txiv hmab txiv ntoo thiab detritus, rau qwj carnivores uas devour rau lwm hom qwj.
Sea snails
Snails Marine faib nyob rau hauv dej hiav txwv thiab hiav txwv thoob plaws ntiaj teb, qhov chaw lawv nyob ntawm qhov tob sib txawv raws li hom. Lawv muaj tib yam lub cev mos, tab sis nrog cov plhaub ntawm ntau yam duab, xim thiab qhov ntau thiab tsawg Ntau cov snails marine siv rau tib neeg noj, thaum lub sting ntawm qee hom yog lom.
Tseem muaj 3 hom qwj, lawv yog cov uas nyob hauv cov dej tshiab ntawm cov dej ntws, pas dej thiab pas dej nyob thoob qab ntuj. Nws pub rau algae, cog khib nyiab, diatoms thiab lwm yam khoom. Lawv nthuav tawm yam ntxwv zoo ib yam li marine snails, txawm hais tias lawv hloov mus rau qhov chaw tsis muaj ntsev.
Tam sim no, snails hatch thiab yug me nyuam li cas? Lawv lub voj voog me me yog dab tsi thiab lawv ua ke li cas? Tom ntej no, peb tshem tawm cov lus nug no thiab lwm yam.
Snails reproduces li cas?
yog koj xav paub snails mate, koj yuav tsum paub ua ntej hermaphrodite hom, uas yog, txhua tus neeg muaj txiv neej thiab poj niam gonads. Txawm li cas los xij, lawv tsis muaj peev xwm ua rau nws tus kheej fertilization, yog li kev yug me nyuam ntawm qwj yuav tsum muaj kev koom tes ntawm ob tus neeg.
ZAUB TOM QAB, LUB DAB TSI DUA DUA LOS NTAWM ZAUB NCAWS, cov molluscs. Tsis tas li ntawd, theem no ntawm mating yog nrog los ntawm kev nce hauv qhov tso tawm ntawm cov hnoos qeev mus rau slime thiab nce ntxiv ntawm kev noj cov qwj.
Tom qab no, los txog lub sij hawm nkag mus. Yuav ua li cas snails sib tov? Txhua tus neeg qhia txog spicule, ib yam ntawm noov los yog txiv neej lub cev, mus rau hauv lub cev xeeb tub ntawm nws tus khub, uas tso cai rau tso tawm lubcalcareous darts kom lom zem. Raws li qhov tshwm sim, txhua tus qwj tso rau hauv lwm qhov spermatophores , sacs puv ntawm phev.
Thaum lub hnab phev tso lawm, lawv tseem nyob hauv qhov chaw mos mus txog thaum lawv raug thauj mus rau chav fertilization, qhov chaw lawv koom nrog lub ovules. Vim li no, tib tus qwj muaj peev xwm khaws cov spermatophores los ntawm cov khub sib txawv.
Cov txheej txheem snail mating kav li ntawm 5 mus rau 10 teev rau txhua khub, txheej txheem tuaj yeem rov ua dua kwv yees li 21 hnub. Hais txog lub caij , nws nyiam lub caij nplooj ntoos hlav thiab lub caij nplooj zeeg, thaum lawv tos hmo ntuj thiab huab cua sov. Tom qab cov txheej txheem no, theem incubation pib thiab tom qab yug ntawm cov qwj.
In the following YouTube video of the Viente Mocholi Grau channel you can see how two snails reproduce:
Snails yug li cas?
Thaum snails reproduce, nws yog ib qho tsim nyog hais tias ntawm 10 mus rau 50 hnub dhau los tom qab mating ua ntej oviposition. Snails lay egg? Cov lus teb yog yog! Peb thiaj li tham txog oviparous tsiaj Lub sij hawm sib txawv raws li hom, tab sis cov xwm txheej huab cua kuj ua lub luag haujlwm tseem ceeb hauv kev yug me nyuam.
Qav nteg qe thaum twg? Muab cov cua sov thiab cov av noo zoo, txhua tus qwj yuav khawb ib qhov hauv av los tso nws cov qe, cov txheej txheem no yuav siv sij hawm ib ncig 20 feeb Qee zaus, lawv tuaj yeem ntxiv lub zes nrog nplooj qhuav, twigs, thiab av, tom qab ntawd cov qwj npog cov qe. Cov kauj ruam kawg no tseem ceeb heev, txij li cov av noo txhawb kev loj hlob ntawm cov xeeb ntxwv.
Nrog cov av noo ntawm 75 mus rau 85%, cov qe qwj yuav siv sij hawm ntawm 7 mus rau 25 hnub rau hatch, ib txheej txheem uas feem ntau tshwm sim thaum lub sij hawm. tshwj xeeb yog hmo ntuj nag. Thaum cov qwj tau daug lawm, nws tseem nyob hauv lub NOJ NIAM LOS NTAWM 5 THIAB DUA, rau ntawm 5 thiab 10 hnub, thaum nws yuav pub rau txhua qhov teeb meem nyob ib ncig ntawm nws, nrog rau nws lub plhaub. Tom qab lub sij hawm no nws yuav khawb mus txog thaum nws tawm hauv lub qhov mus txuas ntxiv mus.
Nyob hauv daim vis dis aus no koj tuaj yeem pom kev yug ntawm cov qwj los ntawm YouTube channel Tu Ración Diaria De Internet:
Yuav ua li cas thiaj paub lub hnub nyoog qwj?
Knowing the age of a kwj Nyob tsis yooj yim thaum xub thawj siab, vim lawv yog tsiaj me, feem ntau ntawm cov hom. Txawm li cas los xij, ib txoj hauv kev tseem ceeb ntawm kev ua tiav yog qhov no, dhau ntawm qhov loj, yog tias koj paub hom, koj yuav txiav txim siab seb nws puas yog qwj raws li centimeters koj ntsuas.
Txawm li cas los xij, peb paub tias txoj kev tuaj yeem tsis ntseeg, tab sis muaj lwm qhov. Txawm hais tias lawv yog hermaphrodites, thaum lawv mus txog rau cov neeg laus nws muaj peev xwm soj ntsuam qhov Muab qhov no rau hauv tus account, ib tug qwj uas tsis tshua pom kev sib deev hauv nruab nrog cev yuav yog ib tug hatchling, lwm tus nrog kev loj hlob los yog lub cev tsis paub tab yuav mus txog rau theem me nyuam yaus, kom pom tau meej meej hauv kev laus.
Txawm li cas los xij, txhua hom tsiaj muaj cov yam ntxwv tshwj xeeb, vim muaj cov qwj uas nyob ib xyoos nkaus xwb, thaum qhov kev cia siab ntawm lwm tus yog 16. Vim li no, txawm rau cov kws kho tsiaj thiab kws tshaj lij, nws tsis tuaj yeem txiav txim siab. ib tug yam ntxwv uas qhia lub hnub nyoog ntawm ib tug qwj.
Aquarium snails yug li cas?
Cov lus piav qhia txog kev yug me nyuam ntawm cov qwj sib raug rau cov hom av, txawm li cas los xij, thaum nws los txog rau hom ntses marine, cov txheej txheem yuav txawv me ntsis. Yog tias koj muaj aquarium snails los yog xav paub seb cov ntses hiav txwv thiab cov dej qab zib li cas ua khub thiab hatch, tshooj no yog rau koj.
NUG, ib zaug lawv mus txog lub caij laus, lawv tau tos lub caij yug menyuam ntawm lub xyoo ZAUB MOV NTAWM IB TUG NEEG mus hais plaub rau nws. Ib tug los yog ob tug txiv neej mam li los cuag nws los ntawm lub hauv ntej ntawm lub cev los txhawb kev spawning los yog qhia lawv cov genitals, vim muaj ib co hom muaj
fertilization sab hauv thiab lwm yam sab nraud
1. PHEEJ HMOO LOS NTAWM QHOV CHAW UA HAUJ LWM, TXOJ KEV TAS NRHIAV TXIAV TXIM LI NO NTAWM DAIM DUAB. Ntawm qhov tod tes, thaum fertilization yog sab nraud, tus poj niam l
a spawns the egg on a sandy substrate, through her genital opens. Tom qab ntawd, tus txiv neej fertilizes lawv, yog li nws feem ntau tshwm sim thaum lub sij hawm spawning. Tus poj niam ces npog lub qe nrog xuab zeb thiab seashells los tiv thaiv lawv. Lawv tuaj yeem nteg nruab nrab ntawm 100 thiab 150 qe nyob rau hauv txhua lub clutch, txawm tias tus lej nyob ntawm hom.
Qe tig thaum kub nce, feem ntau 5 mus rau 7 hnub tom qab ntawm nteg. Thaum lub sij hawm no, lawv noj cov seem ntawm lub plhaub thiab plankton.
In this video from the YouTube channel etven you can see the birth of fresh snails:
