▁has ▁no ▁efficient ▁natural ▁pred ators ▁or ▁par as ites , ▁and ▁which ▁dis place ▁native ▁species — in ▁some ▁cases ▁these ▁species ▁are ▁phys ically ▁destruct ive ▁to ▁habitat ▁as ▁well . ▁C ane ▁to ads ▁have ▁been ▁very ▁successful ▁as ▁an ▁invas ive ▁species , ▁having ▁become ▁established ▁in ▁more ▁than ▁ 1 5 ▁countries ▁within ▁the ▁past ▁ 1 5 0 ▁years . ▁In ▁the ▁Environment ▁Prote ction ▁and ▁B iod iversity ▁Conserv ation ▁Act ▁ 1 9 9 9 , ▁the ▁Australian ▁Government ▁listed ▁the ▁impact s ▁of ▁the ▁can e ▁to ad ▁as ▁a ▁" key ▁threaten ing ▁process ". ▁ ▁Introduction ▁and ▁spread ▁ ▁Native ▁to ▁South ▁and ▁main land ▁Middle ▁America , ▁can e ▁to ads ▁were ▁introduced ▁to ▁Australia ▁from ▁Hawai i ▁in ▁June ▁ 1 9 3 5 ▁by ▁the ▁Bureau ▁of ▁Sug ar ▁Ex periment ▁St ations , ▁now ▁the ▁Sug ar ▁Research ▁Australia , ▁in ▁an ▁attempt ▁to ▁control ▁the ▁native ▁grey - back ed ▁can e ▁be et le ▁( D erm ole p ida ▁al bo h irt um ) ▁and ▁French ' s ▁be et le ▁( L ep idi ota ▁f ren chi ). ▁These ▁be et les ▁are ▁native ▁to ▁Australia ▁and ▁they ▁are ▁det r iment al ▁to ▁sugar ▁can e ▁cro ps , ▁which ▁are ▁a ▁major ▁source ▁of ▁income ▁for ▁Australia . ▁Ad ult ▁can e ▁be et les ▁eat ▁the ▁c rop ' s ▁leaves , ▁but ▁the ▁main ▁problem ▁is ▁the ▁lar