Magnus Huss and coauthors from the Post Lab have published a new paper in the Proceedings of the Royal Society B on how variation among alewife populations causes phenotypic shifts in bluegill, an important game fish and competitor of alewife in lakes in CT. The paper shows that bluegill in lakes with landlocked alewife have adapted to the small-bodied zooplankton community created by predation by landlocked alewife.
This Huss et al. paper was highlighted in a New York Times science times article:
http://www.nytimes.com/2014/06/17/science/a-chain-reaction-of-change-behind-dams.html
Yale press release:
http://news.yale.edu/2014/06/10/colonial-era-dams-trigger-parallel-evolution-connecticut-fish
Other news coverage for this research (most just picking up the Yale press release):
http://phys.org/news/2014-06-colonial-era-trigger-parallel-evolution-connecticut.html