8,271 results
8,271 results for: Fish
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Vitamin A calibrates a heart clock, 24-7
Scientists have discovered a molecular clock that keeps the circulatory system in sync with the rest of the body, and they show it's regulated by vitamin A.
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A bad month for condors
Two California condors in the wild—a hatching and a just-released juvenile—died the same week, as a third went missing.
- Ecosystems
Fish stocking may transmit toad disease
Hatchery-raised trout can transfer a deadly fungus to western toads, bolstering the view that fish stocking may play a role in amphibian population declines.
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The trouble with small male spiders
A test of an old view of sexual cannibalism—that it's a way of rejecting suitors—finds that small males lose out, but not from attacks by females.
- Animals
Bat bites bird. . .in migration attacks
The largest bat in Europe may hunt down migrating birds.
- Animals
Smart tags show unexpected tuna trips
The first report on Atlantic bluefin tuna wearing electronic tags reveals much more dashing across the ocean than expected.
- Materials Science
Chemical sensors gain true portability
Researchers have designed simple new films for indicating the presence of worrisome airborne chemicals.
- Ecosystems
Streamers could save birds from hooks
A test on active longline fishing boats finds that an inexpensive array of streamers can reduce accidental deaths of seabirds by more than 90 percent.
- Chemistry
Chemists redesign natural antifreeze
Researchers have synthesized a family of artificial molecules that resemble the compounds that keep Antarctic and Arctic fish from freezing.
- Animals
When rare species eat endangered ones
To cut down on their salmon smolt catch, Caspian terns were encouraged to move from one island to another in the Columbia River.
- Animals
It’s a snake! No, a fish. An octopus?
An as-yet-unnamed species of octopus seems to be protecting itself by impersonating venomous animals from sea snakes to flatfish.
- Animals
Even deep down, the right whales don’t sink
A right whale may weigh some 70 tons, but unlike other marine mammals studied so far, it tends to float rather than sink at great depths.
