Symbiotic Microbes Induce Profound Genetic Changes In Their Hosts (http://news.google.com/news/url?sa=T&ct=us/0-0&fd=R&url=http://www.sciencedaily.com/releases/2008/07/080728192701.htm&cid=1231130604&ei=suqOSJi4M4fK8ASxmMTQCA&usg=AFQjCNGqIFRYMdTFEtOteq29JjlcQ1qHUw)
Science Daily (press release) - 5 hours ago
To listen into the animal-microbe conversation, McFall-Ngai takes advantage of a relatively simple host-bacterium relationship: the Hawaiian bobtail squid, ...


More... (http://news.google.com/news/url?sa=T&ct=us/0-0&fd=R&url=http://www.sciencedaily.com/releases/2008/07/080728192701.htm&cid=1231130604&ei=suqOSJi4M4fK8ASxmMTQCA&usg=AFQjCNGqIFRYMdTFEtOteq29JjlcQ1qHUw)

The above article also had an interesting aside about methane gas as a fuel.

http://www.sciencedaily.com/releases/2007/12/071210103934.htm