 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| . |  |
. |
Open lake waters may defeat Asian carp
Milwaukee (UPI) Nov 27, 2009 Invasive Asian carp pose a dire threat to the Great Lakes' ecosystem but may not be able to breed in open lake waters, a U.S. expert on the fish said. "If a few fish get into the Great Lakes, it's not game over," said Duane Chapman, a U.S. Geological Survey researcher who studies the food-hogging fish on the heavily infested Missouri River. Researchers believe the big fish have breached an electric barrier on the Chicago Sanitary and Ship Canal, a link between Lake Michigan and the Mississippi River basin. To breed, enough fish have to enter the lake to find each other and then find a place to spawn. Open waters present a problem because fertilized Asian carp eggs require long free-flowing rivers. Without a current to keep the eggs afloat, the eggs sink to the bottom and die, Chapman told the Milwaukee Journal Sentinel in a story published Friday. Share This Article With Planet Earth
Related Links Darwin Today At TerraDaily.com
For giant turtles, beach offers a precarious start to lifePointe Denis, Gabon (AFP) Nov 27, 2009 After two hours of scouring the beaches of Pongara National Park in the dark night, Joan Ikoun-Ngossa and his patrol finally find a leatherback turtle. It has just laid its eggs and is struggling awkwardly back to the sea. For its young, however, there is just a one in a thousand chance of making it to adulthood, thanks to a deadly combination of humans, natural predators, pollution and ... read more |
|
|
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2009 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement |
del.icio.us
Digg
Reddit
YahooMyWeb
Google
Facebook