The Italian-built OSMA machine meets many of the specifications needed to curb the highly invasive, curly-leaved waterweed (lagarosiphon major). Its introduction to the western lake is a key step ...

Lagarosiphon was found in Lakes Waitaki and Aviemore in South Canterbury, which were previously considered largely weed-free. Land Information New Zealand biosecurity manager Tracy Burton said the ...

Easily the greatest threat in modern times to the possible destruction of the Great Western Lakes is the invasion of zebra mussel (Dreissena polymorpha) and African weed (Lagarosiphon major).

Mr Black said human activities were the major factor in the spread of lagarosiphon, through the accidental transfer between water bodies on contaminated boating or fishing gear.