19 June 2014

• “Colonial-Era Dams Trigger Parallel Evolution of Connecticut Fish”


“In its natural state, the small herring-like alewife swarms into Connecticut lakes, devours insects and all large zooplankton growing unmolested for most of the year, and then heads back out to sea, where itself becomes the main course of many of the ocean’s fishes.

”However, the alewife underwent fundamental changes when lakes were dammed in Connecticut 300 years ago. The landlocked alewife became smaller, eliminated all large zooplankton in the lakes, and underwent changes in its gill structure that enabled it to eat the smaller zooplankton that grew there.”

Please visit this link to read the full article: News.Yale.edu


No comments:

Post a Comment