Uma ubucabanga ukuthi ukubonile konke phansi kolwandle, cabanga futhi, ngoba imvelo isishiye singenalutho futhi. Cabanga ngokuntywila ekujuleni okungamakhilomitha amabili, lapho ukukhanya kuyinkumbulo ekude, bese uhlangana nesidalwa esibonakala siphuma ngqo efilimini yesayensi: i- octopus ecacile ephikisana nakho konke esasicabanga ukuthi sikwazi ngama-cephalopods.
Lokhu okutholiwe akuyona nje into yokubona ngamehlo, kodwa kuyindida yangempela yezinto eziphilayo. Sikhuluma ngezinhlobo ezifana ne -Microeledone galapagensis kanye ne-octopus yengilazi eyaziwayo, izilwane eziye zavela ngezindlela ezingavamile kangangokuthi ziphoqa ososayensi ukuba babhale kabusha izincwadi ze-taxonomy futhi bacabange kabusha ukuthi ukuzivumelanisa nezimo kusebenza kanjani olwandle olujulile.
Imfihlakalo ye-Microeledone galapagensis
Eduze neDarwin Island eGalápagos, ithimba elihlanganisa imikhakha eyahlukene eliholwa nguJanet R. Voight kanye nabalingani abavela ezikhungweni ezifana neField Museum yaseChicago kanye neYunivesithi yaseBonn bathole isampula ethakazelisayo. Yi- Microeledone galapagensis , i-cephalopod encane, egobile kancane, ebonakala ingathusanga muntu, uma uyibuka okokuqala, ngenxa yezingalo zayo ezimfushane kanye nokuntuleka kwezimbobo zokuyibamba.
Okumangaza ngempela isikhumba sayo. Ngokungafani nezalamane zayo, ezivame ukumbozwa ngama-chromatophores ukuze zifihle noma zesabise izilwane ezidla ezinye, le octopus inobuso obungaphakathi obucishe bungabi nombala . Lesi sici senza ifane nesipoki noma i-larva kunokuba ifane nomuntu omdala, okuholela ekubukekeni okukhanyayo okungavamile ukubonwa ezilwaneni ezihlala ebumnyameni obuphelele.
Ukuze baqonde lesi simo, ochwepheshe bakhuluma nge- heterochrony , okuyilapho ijubane lokukhula kombungu lishintsha khona futhi isilwane esikhulile sigcina izici esivame ukuzibona kuphela ezigabeni zobusha. Kunjengokungathi iwashi lebhayoloji lale octopus libhajwe, lishiya nokwakheka kwe- neotenic.
Ukwakheka komzimba okwephula imithetho
Isimanga sangempela senzeke lapho beskena isampula nge-microCT scanner, i-computed tomography scan enembile kakhulu. Okwamangaza wonke umuntu, bathola ukuthi nakuba ingaphandle lalicacile, imisipha yalo yangaphakathi yayinombala ojiyile. Ngamanye amazwi, lesi silwane sibonisa umbala ophambene : omnyama ngaphakathi nokukhanya ngaphandle.
Le ndlela iyimfihlakalo ephelele, njengoba ukufihla olwandle okuvamile kuhilela ukuba nomhlane omnyama ukuze uhlangane nesizinda kanye nesisu esilula ukuze silingise ukukhanya okuvela phezulu. I-Microeledone galapagensis yenza okuphambene nalokho, okuphakamisa ukuthi uhlelo lwayo lombala lwaluqandisiwe esiteji sokuqala sokuthuthukiswa.
Ngaphezu kwalokho, lokhu kutholakala kubangele ukuphazamiseka okukhulu ekuhlukanisweni komndeni wakwaMegaleledonidae. Kuvela ukuthi le octopus ayinayo isikhwama seyinki kanye ne-crop diverticulum, izitho ezimbili ezazibhekwa njengezibalulekile kuze kube manje ekuchazeni leli qembu lama-cephalopods. Ngenxa yobuchwepheshe bokuthwebula izithombe, ukungabikho kwalezi zingxenye kuqinisekisiwe ngaphandle kokubhubhisa isampula.
Ingwane yengilazi ekhangayo
Ngakolunye uhlangothi, asikwazi ukukhohlwa i-octopus yengilazi, enye ingcebo yolwandle oluqoshwe yi-Schmidt Ocean Institute. Lesi sidalwa, esihlala phakathi kwamamitha angu-200 no-1.000 ukujula ePacific, sinongwengwezi futhi sicacile kangangokuthi amehlo aso kanye ne-optic nerve kuphela okubonakalayo .
Esinye sezici zayo ezihlaba umxhwele kakhulu amehlo ayo angunxande , okungavamile okubonakalayo okwenza ibukeke njengesilwane sangaphandle. Lokhu kucaca okukhulu kuyindlela ehlakaniphile yokuziphendukela kwemvelo yokusinda endaweni lapho noma yisiphi isithunzi singasho ukuba isidlo sakusihlwa sesilwane esidla ezinye izilwane.
Okusazotholakala
Naphezu kwalezi ntuthuko, isayensi isenokuningi okufanele ikufunde. Ngenxa yokuthi i-Microeledone galapagensis yatholakala endaweni ethile, asazi ukuthi itholakala eDarwin Island noma ukuthi isakazeke kulo lonke elaseMpumalanga yePacific . Ngaphezu kwalokho, kudingeka ukuhlaziywa kwama-molecule ukuze kutholakale ukuthi ingena kuphi esihlahleni somndeni we-cephalopod.
Futhi asinawo umbono wokuthi idlani, ukuthi izala kanjani , noma ukuthi iziphatha kanjani empilweni yayo yansuku zonke. Lokhu kusikhumbuza ukuthi phansi kolwandle kuseyindawo engaziwa kakhulu emhlabeni wethu; ukuthi isilwane esinjalo asizange siqashelwe kuze kube muva nje sibonisa ukuthi ulwandle lunezimfihlo esingenakuzicabanga.
Ukutholakala kwala ma-cephalopod akhanyayo, kusukela ku-Microeledone galapagensis enombala wayo oguquliwe kanye nokuntuleka kweyinki, kuya ku-octopus yengilazi e-ethereal enamehlo ayo angunxande, kugqamisa ukuzivumelanisa nezimo okumangalisayo kokuphila olwandle olujulile. Lezi zidalwa, ezibonakala zilenga ngesikhathi ngenxa yezinqubo ezifana ne-heterochrony, zisiphoqa ukuba sicabange kabusha nge-seasonal taxonomy futhi sikwenze kucace ukuthi ukuhlola ukujula kwe-bathyal kusanda kuqala.
