Zamkati
- Starfish kubalana
- Kodi starfish imagwirizana bwanji?
- Kodi starfish ndi yopepuka kapena yoviparous?
- Kodi kubadwa kwa starfish ndi chiyani?
- Starfish zokha
- Starfish ndi kuberekana kwa atsikana
Starfish (Asteroidea) ndi imodzi mwazinyama zodabwitsa kwambiri kuzungulira. Pamodzi ndi zikopa, urchins ndi nkhaka zam'madzi, amapanga gulu la echinoderms, gulu la nyama zopanda mafupa zomwe zimabisala pansi panyanja. Sizachilendo kuwaona m'mbali mwa miyala pamene akuyenda pang'onopang'ono. Mwina ndichifukwa chake zimatigwiritsa ntchito kwambiri kulingalira Kodi kubereka kwakumangirira.
Chifukwa cha njira yawo yamoyo, nyamazi zimachulukana modabwitsa komanso mosangalatsa. Amakhala ndi ziwalo zoberekera, monga ife, ngakhale amachulukitsa asexually, ndiye kuti amadzipanga okha. Mukufuna kudziwa bwanji? Chifukwa chake musaphonye nkhani iyi ya PeritoAnimal yokhudza kuberekanso kwa starfish: mafotokozedwe ndi zitsanzo.
Starfish kubalana
Kuberekanso kwa Starfish kumayamba pakakhala malo abwino okhala. Ambiri mwa iwo amaberekanso m'nyengo yotentha kwambiri pachaka. Komanso, ambiri amasankha masiku okwera mafunde. Nanga bwanji za nsomba za starfish? Wanu mtundu waukulu woberekera ndi wogonana ndipo zimayamba ndikufufuza kwa amuna kapena akazi okhaokha.
nyama zam'madzi izi gonana amuna okhaokha, ndiye kuti pali amuna ndi akazi, kupatula zina za hermaphrodite.[1] Kutsata mayendedwe a mahomoni ndi mankhwala ena[2], starfish imayikidwa m'malo abwino kuberekana. Mitundu yonse ya starfish imapanga timagulu tating'ono kapena tating'ono tomwe amatchedwa "zophatikizira"kumene amuna ndi akazi amasonkhana pamodzi. Kuyambira pano, mtundu uliwonse umawonetsa njira zosiyanasiyana.
Kodi starfish imagwirizana bwanji?
Kuberekana kwa starfish kumayamba pomwe anthu ambiri amaphatikizana m'magulu ambiri kuti ayambe kukwawa pamwamba pa wina ndi mnzake, kukhudza ndikusokoneza mikono yawo. Kulumikizana kumeneku komanso kutsekemera kwa zinthu zina kumapangitsa kuti magemu onse azikhala amuna kapena akazi okhaokha: akazi amatulutsa mazira awo ndipo amuna amatulutsa umuna wawo.
Masewerawa amalumikizana m'madzi, zomwe zimatchedwa umuna wakunja. Kuyambira pano, moyo wamtundu wa starfish umayamba. Palibe mimba: mazira amapangidwa ndikukula m'madzi kapena, mwa mitundu ingapo, pa thupi la kholo. Kujambula kotereku kumatchedwa pseudocopulation, popeza kulumikizana kwakuthupi koma osalowerera.
Mitundu ina, monga nyenyezi yamchenga (archaster wamba), pseudocopulation imachitika m'mabanja. Chimodzi wamwamuna amayimirira pamwamba pa mkazi, kulowerera mkati mwawo. Kuwonedwa kuchokera kumwamba, zimawoneka ngati nyenyezi yosongoka khumi. Amatha kukhala monga awa kwa tsiku lathunthu, kotero kuti nthawi zambiri amakhala okutidwa ndi mchenga. Pomaliza, monga momwe zidalili m'mbuyomu, onse amatulutsa magemu awo ndipo umuna wakunja umachitika.[3]
Muchitsanzo ichi cha nyenyezi zamchenga, ngakhale kumawiri kumachitika awiriawiri, kumatha kuchitika m'magulu. Mwanjira imeneyi, amachulukitsa mwayi wawo woberekana, komanso kukhala ndi zibwenzi zingapo munthawi yomweyo yobereka. Chifukwa chake, starfish ili mitala nyama.
Kodi starfish ndi yopepuka kapena yoviparous?
Tsopano popeza talankhula za starfish ndi kuberekana kwawo, titenga funso lina lodziwika kwambiri lokhudza iwo. Ambiri ya starfish ndi oviparousndiye kuti amaikira mazira Kuchokera ku mgwirizano wa umuna ndi mazira omwe atulutsidwa, mazira ambiri amapangidwa. Nthawi zambiri amaponyedwa pansi panyanja kapena, mumitundu ingapo, potola zomwe makolo awo ali nazo pamatupi awo. Akaswa, samawoneka ngati nyenyezi zomwe tonse tikudziwa, koma mphutsi za planktonic kusambira komwe kumachoka.
Mphutsi za Starfish ndizophatikizana, ndiye kuti matupi awo amagawika magawo awiri ofanana (monga ife anthu). Ntchito yake ndikubalalitsa nyanja, ndikupanga malo atsopano. Akamachita izi, amadyetsa ndikukula mpaka nthawi ikadzakula kukhala achikulire. Pachifukwachi, amira pansi pa nyanja ndikuvutika a ndondomeko ya kusintha kwa thupi.
Pomaliza, ngakhale ndizosowa kwambiri, tiyenera kutchula izi Mitundu ina yamtundu wa starfish ndi viviparous. Ndi nkhani ya patiriella vivipara, omwe ana awo amakula m'matumba a makolo awo.[4] Mwanjira iyi, akakhala odziyimira pawokha kwa iwo, amakhala ndi mawonekedwe ofanana a pentameric (mikono isanu) ndipo amakhala pansi pa nyanja.
Ndipo polankhula za starfish ndi kuberekana kwawo, mwina mungakhale ndi chidwi ndi nkhani ina yokhudza nyama 7 zapamadzi zosowa kwambiri padziko lapansi.
Kodi kubadwa kwa starfish ndi chiyani?
Pali nthano yodziwika kuti nyenyezi zam'nyanja akhoza kupanga okha kugwetsa ziwalo zamatumba awo. Kodi izi ndi zoona? Kodi kuberekana kwa asexual starfish kumagwira ntchito bwanji? Tisanadziwe tiyenera kukambirana za autotomy.
Starfish zokha
Starfish amatha kutero kusinthanso mikono yotayika. Dzanja likawonongeka pangozi, amatha kudzipatula kwa ilo. Amachitanso izi, mwachitsanzo, pamene chilombo chikuwathamangitsa ndipo "amasiya" amodzi mwa manja awo kuti amusangalatse akapulumuka. Pambuyo pake, amayamba kupanga mkono watsopano, njira yotsika mtengo kwambiri yomwe imatha kutenga miyezi ingapo.
Njirayi imapezekanso mwa ena mwa nyama, ngati abuluzi, omwe amataya michira yawo akamawopsezedwa. Izi zimatchedwa autotomy ndipo ndizofala kwambiri munthawi zina za starfish, monga starfish yodabwitsa (helianthus wothandizira).[5] Kuphatikiza apo, autotomy ndi njira yofunikira kumvetsetsa momwe starfish imaberekera asexually.
Starfish ndi kuberekana kwa atsikana
Mitundu ina ya starfish imatha kusinthanso thupi lonse kuchokera m'manja, ngakhale kuti gawo limodzi mwa magawo asanu a disk yapakati imasungidwa. Chifukwa chake, panthawiyi manja samasungidwa ndi autotomy, koma chifukwa cha a ndondomeko kapena kugawanika za thupi.
Starfish matupi awo agawika magawo asanu ofanana. Osangokhala ndi miyendo isanu, chimbale chawo chapakati chimakhalanso pentamer. Pakakhala zofunikira, izi chimbale chapakati chimang'ambika kapena chimang'ambika mu magawo awiri kapena kupitilira apo (mpaka asanu), iliyonse ili ndi miyendo yofanana. Mwanjira iyi, gawo lirilonse limatha kusinthanso malo omwe akusowapo, ndikupanga nyenyezi yonse.
Chifukwa chake, anthu omwe angopangidwa kumenewo ndi zofanana ndi kholo lako, Chifukwa chake, ndi mtundu wa kuberekana. Mtundu wobalidwa ndi starfishwu sukuchitika m'mitundu yonse, koma m'mitundu yambiri monga Aquilonastra corallicola[6].
Tsopano popeza mukudziwa momwe nsomba za starfish zimasangalalira, mungasangalale kudziwa mitundu ya nkhono.
Ngati mukufuna kuwerenga zina zambiri zofanana ndi Kuberekanso kwa Starfish: malongosoledwe ndi zitsanzo, tikukulimbikitsani kuti mulowe mu gawo lathu la Curiosities la nyama.