There is a plan to poison the rats on the Galapagos islands. This is fine if they were just killing an invasive species (and in this case there are black rats and house mice that have invaded) but there were native rodents living on the island and like the other wildlife of the islands, have some unique features from an isolated population on an island. I am guessing that their removal of some of the wildlife species for a later return (in January) might include some native rodents but there is no indication of that in the news reports. Here is a link to someone's efforts to study the effects of the invasive rodents on the native rodents:
http://www.wildcru.org/members/member-detail/?member_id=102