I’m still sorting through old files and finding lots of items I’ve been meaning to share. One is this report which is 4 years old (yep, I’ve been busy), but it is well worth knowing about if you missed it the first time around. French, Swiss and Danish Scientists were studying the ant colonies in Europe. They were tracking the changes of the introduction of the Argentine ant. They found three amazing things:
1) The ants, contrary to their genetic predilection to socialising according to relatedness, were mixing with ants from other nests.
2) Not only were the ants mixing together, but they amassed into “two immense supercolonies (which effectively are two unicolonial populatons)”.
3) They discovered there was a main “supercolony” that spanned over “6,000 kms from Italy to the Spanish Atlantic coast”. It was/still is the “largest cooperative unit every recorded”.
Tatiana Giraud, J.S.P., and Laurent Keller (2002) ‘Evolution of Supercolonies: The Argentine Ants of Southern Europe’ in Proceedings of the National Academy of Science of the United States of America, Vol. 99, p, pp:6075-6079