Ngelixa isenokungabi sisigcawu esikhulu emahlathini aseMadagascar, i Isigcawu sikaDarwin -Igama layo njengokuba lalichaziwe kwiminyaka eli-150 emva kokupapashwa kwe Imvelaphi yeeNdidi -Ibango elihle kakhulu lodumo. Ngokwabaphandi, izigcawu eziyi-18mm azinangomsonto onzima kuphela, kodwa ziyisebenzisele jikelezisa ii-webs ezinye ii-75 ububanzi ububanzi . Oku ngokulula kubenza babe ngabenzi beefayile ze ezona zikhulu zibukhulu besigcawu ehlabathini . Inkqubo abaluki abancinci abenza ngayo umsebenzi wabo iyamangalisa ngokuthe ngqo.
Isigcawu sifumana umlambo, emva koko isebe okanye ityholo eliselunxwemeni lomlambo. Ukusuka apho, ikhupha umgca wentambo ovuthuzwa ngumoya- ngethemba lokuwela umlambo. Nje ukuba ifike iankile kwelinye icala lebhanki, isigcawu siyawomeleza lo mgca mde womsonto kwaye siqala ukujija i-web ejikelezayo emlanjeni ngokwawo.
Nangona izazinzulu zinayo ngoku kuqhekeziwe indlela ezakhiwe ngayo iiwebhu , abakakaqiniseki ukuba kutheni iiwebhu zisakhiwa. Ngexesha lokujonga kwabo, izazinzulu zazibuza ukuba mhlawumbi ezi webhu zinkulu zazenzelwe ukubamba ixhoba elikhulu. Kodwa xa kungekho nto inkulu kunoqongqothwane okanye idragonfly enombala kwiwebhu, bagqiba kwelokuba basebenzise ulingo lwebhayoloji kwaye baphosa nje ixhoba elikhulu kwiwebhu ukuze babone ukuba kuzakwenzeka ntoni. Ngaphandle kokuqhula kobunzululwazi, amasele kunye nezinambuzane ezinkulu zabaleka kwiwebhu zingonzakalanga.
Ithiyori yangoku kukuba isigcawu sikaDarwin sesigcawu sihamba ngobuninzi ngaphezu komgangatho. Iwebhu enkulu inokubangela ukuba i-arachnid ibe nokutya okuninzi kwaye okuqhubekayo. Ngapha koko, xa oonobhabhathane bephuma emlanjeni bengamaqela, kunokwenzeka ukuba indawo engaphezulu kwamanzi ilungele ukubamba izinambuzane ezisandula ukuvela.
Ngelixa izazinzulu zisatyhila (ha) iwebhu yemfihlakalo (ha ha) ejikeleze lo mbhodamo we-orb-weaver, abo kuthi bahlala kude neMadagascar banombulelo ukuba asisokuze sifumane iimitha zesigcawu sewebhu ebusweni bethu kwaye sinokuphumla kakhulu, lula kakhulu.
(nge Inzululwazi eNtsha , imifanekiso nge I-Wikipedia )
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