Gastropods: isakhiwo, imisebenzi ebalulekile, ukukhiqizwa kabusha

Gastropod mollusk noma iminenke ezibhekwa isigaba kunalokho emikhulu yezilwane, okuyinto namuhla has ecishe ibe yizinkulungwane 100 zilwane. Cishe wonke amalungu endala ababekulelo qembu eziphilayo zasolwandle, okuyinto ngokuhamba yokuziphendukela kwemvelo baye bathuthela sokusinda eliwumhlaba nasemanzini agelezayo. Akwaziwa kanye nezinambuzane shellfish, kodwa hhayi kakhulu. Ngokuthakazelisayo, izinhlobo ezithile baye bathuthela okwesibili endleleni wamanzi okuphila, okhokho babo babe eziphilayo ezihamba ezweni.

Gastropods: body building

NgoLwesine kutholakale isidumbu sendoda abameleli lolu hlobo sehlukaniswe inhloko yehhovisi, umzimba, imilenze kwemisipha. Ekhanda kwezinhlobo eziningi eyodwa noma amabili namabhuzu ihambe. Kepha isiqu, ke azilingani futhi ngokuphelele echibini. Ukucwila e gastropod ebalulekile futhi yakha Kuvunguza lanetinombolo letehlukene curls. Umlenze ukhonza ngoba ezihambayo ukulungisa - has a yedwa ekhethekile phezu underside. Esimeni esiphuthumayo, inhloko nomlenze some ngaphakathi igobolondo.

ingaphakathi isiphuku isilwane kule aphansi igobolondo ematfuba. Lezi Amapayipi ukuvula uhlelo excretory, kanye ingquza. Ezinye amalungu esigaba lapha ophumayo Amapayipi kwesimiso sokuzala. Kuyathakazelisa ukuthi ingxenye isiphuku ngesikhathi eziphila olwandle uye savela gills, futhi abakhileyo ezweni agcinwa ukukhanya.

Integument ethulwa epithelium, okuyinto abacebile nezindlala ethize ukukhiqiza isikhwehlela.

Gastropods: Sakhiwo sangekhatsi

wokugaya ukudla kuqala ngalo ingaphakathi ngomlomo, ngokusobala ukuvulwa kwaleyo okuyinto ngokufanele on the underside esifundeni ekhanda. Emphinjeni siyinhlangano ethize ebizwa radula, okuyinto a grater chitin ngalo ukudla uchotshoziwe futhi engena emphinjeni. Kube sekulandela esiswini (lapha evulekile Amapayipi hepatic) kanye emathunjini, siphetfo imbobo.

Uhlelo excretory ezinhlotsheni eziningi zezinto eziphilayo emelelwa omunye izinso, nakuba zikhona izilwane, kanye izindikimba ezimbili. Ihlelo lokukhambisa iingazi libhekisela lacunarity uhlobo futhi siqukethe inhliziyo futhi semithambo uhlelo izikhala.

uhlelo zokuphefumula emelelwa gills noma emaphashini. Ngo abameleli zasolwandle, njengoba umthetho, kungabonwa gills ctenidium noma eyinhloko. Ngo zohlobo olulodwa ukuthi baye bathuthela basinde emanzini yesibili, gill umsebenzi kuthatha isiphuku. abameleli Ground zinezikhathi uhlelo eziyinkimbinkimbi zokuphefumula, esakhiwa uhlelo engasindi futhi tracheal amashubhu, okuyinto siyahluka futhi lidlulisela emoyeni zonke izingxenye zomzimba.

yakheke kahle nokuthi isimiso sezinzwa, okubhekiselwa kulo ngokuthi uhlobo ehlasela umzimba-engeyokuqala. Izilwane eziningi ube ngazimbili ezinhlanu ganglia eziyisisekelo. Kuyaphawuleka futhi evuthiwe izinzwa, kuhlanganise amehlo futhi receptor ethintekayo.

Gastropods kungaba (izilwane zasolwandle) dioecious futhi hermaphrodites (abamele ezweni nasemanzini agelezayo). Ukuvundisa ngokuvamile kwenzeka emzimbeni insikazi, wabe abe ezalela amaqanda. Kuyathakazelisa ukuthi ngesinye isikhathi gastropod izalela amaqanda eziningana ngesikhathi esisodwa, ukwakha bamba.

Amaqanda embozwe capsule ngesivalo encane phezulu. Ngezinye izikhathi kuze wokwakha ngaphandle usebenzisa isikhwehlela enamathiselwe nenzalo, amaphilisi awunalutho. Le nqubo has a uhlamvu ukuzivikela - nomzingeli gnaws ezinye Iqanda ezingenalutho, bese eshiya. Ngokuqondene nentuthuko, kungaba kokubili ngqo futhi ukukhiqiza izibungu.

Gastropods: amafomu ethandwa kakhulu

Ilunga edume kakhulu isigaba yiyona okuthiwa umnenke. Kufanele kuqashelwe ukuthi amaqembu emikhulu yezilwane kungalimaza isivuno lamagilebhisi. Ngesikhathi esifanayo, iminenke esekhulile ngokukhethekile emazweni athile abhekwa i uju ezibizayo.

Futhi abanye besifazane ngemvume Slug - a mollusc encane nge echibini esincishisiwe, okuyinto feeds izitshalo. Lena inkathazo wangempela izitshalo yemifino, ngakho ukubhubhisa asetshenziswa imiphakathi amakhemikhali.