It's a mystery. Invasive sea lamprey, the Great Lakes' biggest predator, primarily feed on lake trout, one of the lakes' most prized sports fish. When trout populations are high, researchers expect to see fewer lamprey-wounded ...
Plants & Animals
Sep 28, 2020
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53
Sea trout get no peace. They're constantly exposed to new diseases and ailments, many of which are due to climate change and human activity.
Plants & Animals
Aug 4, 2020
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10
A sea lamprey has no jaw, no proper teeth and no bones. Yet this predator can attach like a suction cup to a fish 100 times its size, use its tongue to burrow a hole into its side, liquefy its tissues and eat it.
Plants & Animals
May 21, 2020
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20
Sea trout populations have declined sharply. Researchers have studied the life of sea trout by means of acoustic telemetry tags and listening stations. Now they know more about what we need to do to protect the sea trout ...
Plants & Animals
Feb 20, 2020
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18
Authorities in the western US state of Oregon have euthanized four sea lions in the last month as part of a program to protect salmon runs and steelhead trout that are at risk of going extinct.
Ecology
Jan 12, 2019
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19
A four-year survey of brown trout in the burns of Orkney has revealed a surprise finding about Scotland's most ubiquitous fish: smaller members of the school have growth spurts when they decide to go to sea.
Ecology
May 3, 2018
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13
Jan G. Davidsen and his graduate students are spies. They use listening stations and special tags they attach to their subjects to track their movements. They follow their subjects winter and summer, day and night. They are ...
Ecology
Oct 29, 2014
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0
In recent years, robotic underwater vehicles have become more common in a variety of industrial and civil sectors. They are used extensively by the scientific community to study the ocean. For example, underwater robots have ...
Robotics
Jul 18, 2013
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0
The grey seals in the Baltic Sea compete for fish with the fishing industry. The seals locally eat about the same quantities of cod, common whitefish, salmon, sea trout and eel as those taken by fishermen. This is the conclusion ...
Ecology
Apr 2, 2012
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