Yiziphi ezinye zezimbangela zokuncipha kwe-rockhopper yasenyakatho?
Context:Ucwaningo olwanyatheliswa ngo - 2009 lwabonisa ukuthi inani le - rockhopper yasenyakatho emhlabeni liye lancipha ngo - 90% kusukela ngawo - 1950, mhlawumbe ngenxa yokushintsha kwesimo sezulu, izinguquko ezimisweni zemvelo zasolwandle kanye nokudoba ngokweqile kwe - squid ne - octopus ngabantu. Ezinye izici ezingase zibangele ukwehla zihlanganisa ukuphazamiseka nokungcoliswa okubangelwa ezokuvakasha kwezinto eziphilayo nokudoba, ukuqoqwa kwamaqanda, kanye nokudliwa nokuncintisana kwezimfene ezinoboya ezisezansi kwe-Antarctic (i-Arctophoca tropicalis). Ucwaningo lubonisa ukuthi lezi zinyoni zisengozini yokungenwa amagundane. Amagundane asendlini (Mus musculus) aye angeniswa endaweni yawo ngokuhambela kwabantu olwandle. La magundane aye abonakala ehlasela, futhi adla amaqanda ama-rockhopper asenyakatho, kanye nokuzingela amazinyane awo. Ukuze kulondolozwe lezi zinyoni, kucatshangelwa ukubulala amagundane. Izimo zokushintsha kwesimo sezulu zishintsha ukutholakala kokudla ngoba kunciphisa izakhi zomzimba nokukhiqiza. Lokhu kubangela umthelela ebuningini bomzimba, kubangele umthelela omubi ekuphumeleleni kwazo ekuzaleni.
Ezinye zezimbangela zokuncipha kwe-rockhopper yasenyakatho zihlanganisa ukuguquka kwesimo sezulu, ukudoba ngokweqile nokungeniswa kwezinhlobo ezihlaselayo njengamagundane.