It\’s one of those things we\’re urged to do, isn\’t it? Instead of slathering the crops with pesticides and herbicides, we should look to integrated management, think holistically, use natural predators to control pests.
An insect that once held promise as a natural pest controller was branded the most invasive species in Britain yesterday by researchers.
Because it eats so many aphids, its staple diet, as well as other ladybirds, it has threatened the number of native ladybirds and species, such as lacewings, which also eat aphids. It also threatens aphid numbers. The two-spot and seven-spot ladybirds are particularly threatened.
The harlequin ladybird’s voracious appetite for aphids attracted interest in its use as a biological pest control but after it was released in several European countries in the 1980s and 1990s it rapidly became established and spread widely.