Alien invaders!

I was really surprised to see a story on the BBC news site about a proposal to introduce a non-native predatory insect to the UK to tackle the non-native Japanese Knotweed.

Japanese Knotweed is undoubtedly a very serious problem in the UK, as its rapid growth destroys habitat by out-competing the native plants. This then has a knock on effect of destroying the habitat of animals and birds. But introducing another alien invader is clearly not the answer!

For example, cane toads were introduced into Australia in 1935 in an attempt to control the cane beetle. Cane toads have no natural predator in Australia and have bred at a very rapid rate. They are thought to have spread disease destroying habitat and are poisonous, killing things like native snakes that try to eat them.

History is littered with examples of where these introductions have gone wrong, will they next have to introduce something to tackle the insects they introduced to tackle the knotweed?


2 Responses

  1. There was an old woman who swallowed a fly…

  2. Do these scientists never learn? Where will it all end?

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