How do invasive species reach the United States?

There are many different pathways for invasive species to enter the United States. In this paper, the authors look at the interception of exotic insects in airline passenger bags.


Liebhold, Andrew M., Timothy T. Work, Deborah G. McCullough, and Joseph F. Cavey. 2006. Airline baggage as a pathway for alien insect species invading the United States. American Entomologist 52(1): 48-54.

Please click in the following link to read the article
http://www.treesearch.fs.fed.us/pubs/23638