Xa sicinga ngezigcawu, sihlala sijonga iintambo zentambo zentambo ezizisebenzisayo ukubamba amaxhoba azo. Ngoku, uphando olutsha olupapashwe kwincwadi ethi Ecology and Evolution lutyhila enye indlela emangalisayo isigcawu esiwusebenzisa ngayo umsonto waso—olunye uhlobo lwaseMadagascar luye lwabonwa luthunga amagqabi ukuze senze umgibe wokubambisa isele.
Lo mbono ungaqhelekanga yafunyanwa ngempazamo liqela labaphandi ababeqhuba izifundo ngendalo eMadagascar. Ngenye intsasa, emva kokugqiba ukubala kweentaka eAmbodiala, babona isigcawu ( Sparassidae, Damastes sp.) sidla isele. Ii-invertebrates ezitya i-vertebrates aziqhelekanga, kodwa abaphandi bakholelwa ukuba ingxelo yabo yenye yezinto ezimbini ezichaza ukunyangwa okunjalo eMadagascar.
Uhlobo olufanayo lwesigcawu luye lwabonwa kwezinye izihlandlo ezithathu, ubukhulu becala kumasimi evanilla kulo mmandla. Eyona nto inomdla kukuba zonke izigcawu ziye zabonwa kufuphi okanye ngaphakathi kwendawo yokufihla amagqabi "athungwe" ngomsonto. Amakhusi avuleke kancinane kwelinye icala, abonakale njengendawo epholileyo yokuzimela amasele, afudunyezwe lilanga laseMadagascar, angaziyo ukuba kukho isigcawu esizifihle ngaphakathi.
Isigcawu sokuqala safumana ukutya isele libuyela kwindawo elizimele kuyo emagqabini njengoko abaphandi beza kufota. Izigcawu eziseleyo mhlawumbi zikufuphi okanye zisezikhundleni ezifanayo zamagqabi. Azibonakali zikhetha uhlobo oluthile lwemithi, njengoko amagqabi emithi eyahlukahlukeneyo esetyenzisiwe kubuchwephesha bokudala iindawo ezinjalo zokufihla. Noko ke, eyona nto iwadibanisayo kukuba onke “athungelwe” omnye komnye ngomsonto wesilika wezigcawu.
“Xa amaqondo obushushu enyuka, amasele afuna umthunzi aze azimela kude nomhlaba, nto leyo enikelwa zizigcawu njengekhusi,” babhala njalo ababhali kwelo phepha labo. “Amasele asenokukhetha imigibe ebonakala ngathi ikhuselekile ngelizama ukuzifihla kwezinye izilwanyana ezizingelayo, njengeentaka ezihlola uhlaza ukuze zifumane amaxhoba ... Siqikelela ukuba izilwanyana eziphila emanzini nasemhlabeni aziyi kuba lixhoba nje elithatha amathuba, ukungakhethi cala okanye ngengozi, kodwa zisebenzise ngenjongo ukutya kwezigcawu. Iingxaki sp.”
Abaphandi bayayivuma imida yophononongo, njengoko kuqwalaselwe kuphela isigcawu esitya isele. Bakwaqaphela ukuba ixhoba elikhulu elifana nesele libonwa lula ngeliso lomntu kwaye akufanele lithathwe njengobungqina bokuba oku kukuziphatha okuqhelekileyo. Nangona kunjalo, indlela izigcawu "ezithunga" amagqabi ukuze zenze ikhusi iyamangalisa.
Ifoto: Iindawo zokuhlala ezipholileyo ezibonakala ngathi zinoxolo ziye zaba ngumgibe kwezinye izilwanyana. Ifoto: Thio R Fulgence et al (2020), Ecology and Evolution
Umthombo: IFLScience -Isigcawu saseMadagascar siqwalasele ukuthunga amagqabi kunye ukwenza umgibe wokuhenda wamasele
