Ever had the feeling you are being watched? Usually we dismiss such feeling as paranoia, but for the chinnock salmon there's some truth behind the feeling.
Researchers at Project Watershed in collaboration with Fisheries and
Oceans Canada, Puntledge River Hatchery have placed tracking devices on salmon to track their homing behaviour.
The objective of the study is to determine if a group of
summer chinook salmon, which has imprinted in Comox Lake as juveniles,
has greater success in reaching the lake as adults, compared to a control group which has been released directly to the river from the
hatchery.
Glow in the dark fishing nets have been trialled in California, USA in a bid to stop sea turtles getting tangled up. The nets have been fitted with LED lights which warn passing turtles, and other animals, to steer clear.
Previous research has shown that sea turtles can see light in
the UV range but certain economically-important fish species can't.
With this in mind, researchers in Baja, California
illuminated gill nets with battery-powered UV LED lights spaced at
five-metre intervals along the net. Around 40 percent fewer turtles interacted with the LED net than a control net with LEDs turned off.
Could this technology applied to aquaculture?
Another reason to eat salmon! Research at Manchester
University, UK, has concluded that the long chain omega-3s found in oily
fish such as salmon can protect against sunburn.
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| English: Fishing net at Cuxhaven, Germany (Photo credit: Wikipedia) |
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