By Tom Spears, Ottawa Citizen, May 28, 2015
Once kings of the Ottawa and St. Lawrence Rivers, eels have nearly disappeared
here. Now a Canadian study says their genes are one reason why it’s hard to help
them recover. Eels are hatched in the Atlantic Ocean but travel far inland, then
return to the Atlantic to breed years later. Dams, turbines and other obstacles
block their migration. via
Eels’ recovery slowed by their own genes | Ottawa Citizen.