In article ,
"Bob Hobden" writes:
|
| Wouldn't make a huge difference - the aphids fly a respectable distance.
|
| Read an article recently which said that scientists have found aphids being
| taken to the upper atmosphere by thermals freezing and being blown a long
| way before dropping down, thawing and going about their business.
| Frightening!
| Hope it's not true.

It's plausible. They are at about the limit of complexity where they
could survive that - especially if they got slightly dehydrated first.
The consequence of that is that such aphid species and the diseases
they carry would be circumpolar - I don't know if they are or not.


Regards,
Nick Maclaren.