Since we decided to discuss the ant trade topic:
I totally agree that there are problems arising in an fully unlimited ant trade. I wouldn't favour that myself.
To repeat points that were often made:
1. Ant trade is not the main source for the problems connected with tramp species. International trade is a way bigger problem. You can often read, that people will find an ant colony in their exotic plants. Colonies are transported by cargo ships.
I dare to say that at least 99,99% tramp species were introduced that way. Forbidding international trade will be a very hard task, though .
2. There were many discussions about endemic species, but the problem is the same as in point 1.
Limiting ant trade ( no "pest ants" / "tramp species", no endangered / protected species) would be a decent solution. Completly stopping ant trade is unreasonable and will not help at all.
Edit for clarification:
The "merkur debate" has nothing to do with his view on ant trade.
Edited by Colophonius, January 14 2015 - 11:48 AM.