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Ibeldisen (Assaɣ ussnan: Gastropoda) d asmil meqqren yakk deg wadur n tigritin acku dges azal n 80% n telmas yeṭṭafaren adur-a, akken daɣen i tga d tafesna tameqrant tis snat yakk deg tgelda taɣersawt anda i llant dges wazal n 65000 n telmas gar-asent aɣlal d umillus d tezɣurt.
| Ibeldisen | |
|---|---|
 | |
| Tasensartut | |
| Tagelda | Animalia |
| Adu-tgelda | Bilateria |
| Adur | mollusques (fr)  |
| Ad-adur | Conchifera (fr)
|
| asmil | Gastropoda Cuvier, 1797
|
Azal ameqran n ibeldisen lan (sɛan) ajeɣlal amyiwen ddurayen yis, ijeɣlalen-a ttilin d ubrinen
Ibeldisen ttidiren deg waṭas n twennaṭin n umadal, Amur ameqran degsen deg waman anda ugar n 3000 n telmas n ibeldisen ttidiren s ddaw n waman n illan d igarawen yakk d 5000 n telmas n idem ttidiren deg waman iẓidanen (isafen, iɣezṛawen, igelmimen) ma d tilmas id yegran ttidirent sufel n tegnit (lqaɛa), Azal ameqran n ibeldisen tetten imɣan akken i llant telmas tettent isugar igemnawen akken daɣen i llant kra n telma d timseksumin yerna gant d timuɣas.
tasnasileɣt:
Ibeldisen s umata d iɣersiwen irazamalen (asymétriques) anda tafekka-ynes tebṭa ar 3 n ismilen ufrizen:
tigritin-a gant d tiynuzufin neɣ iberwetmen, Timseddert neɣ tamarrawt.
Amyaraw Tuget neɣ azal ameqran n ibeldisen gan d iberwetmen, isin n talwiyin ttmiqqanen tisiqsin-nsen w ttembadalen igamiten n iwetmen s akin ad asen igamiten n twetmin i wakken ad myarrwen.
.
Ibeldisen gan d tagrawt taɣersawt tameqrant yakk seld n iburɣas anda llant 40000 n telmas d timiddurin, banen-d ɣer tudert send n 600 ms, akken igan d tigritin timyiwnin iy sselken tagnit imedlen, Amezruy amhazan n ibeldisen yettwassnen s temhazt n talɣa n ijeɣlalen-nsen.
Irem n Gasteropoda (igan d assaɣ ussnan n ibeldisen) yekka-d seg sin n wawalen igriken γαστήρ (gastêr), « Adis », d πούς (poús), « Aṭar ».
Deg usismel amzikan (aqbur), amedya deg wagla n Johannes Thiele (1929-1935), llan 3 n idu-smilen ibuda:
S unect (ɛla ḥsab) n useklas agreɣlan n telmas tiwlalin (deg 24 ctember 2104)
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