8,281 results
8,281 results for: Fish
- Earth
Farm salmon spread deadly lice
In the Pacific Northwest, sea lice that spread from cultivated salmon to their wild counterparts have become major parasites affecting the wild population.
- Anthropology
Stone Age Footwork: Ancient human prints turn up down under
An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.
- Earth
Sinking Mercury: Light-based reactions destroy toxic chemical in Arctic lakes
Sunlight triggers the entry of poisonous mercury into polar lakes, but it also removes most of the toxic compound before fish can consume it.
- Animals
New candidates for smallest vertebrate
Two recent scientific papers have described fish species that could, depending on the definition, be the world's smallest known vertebrate.
- Animals
Killer Flatworm: New species hunts with puffer fish toxin
A newly described marine flatworm from Guam hunts with the same toxin that a puffer fish uses. With video.
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Transplant reroutes cells from sperm to eggs
Fish cells destined to become sperm can become eggs when transplanted into larvae.
- Earth
Species-aid budget looks fishy
State and federal governments spent $1.4 billion in 2004 on conserving endangered and threatened species, with one-third of that sum going to protect fish.
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Pigging Out Healthfully: Engineered pork has more omega-3s
Scientists have created pigs that sport much higher concentrations of omega-3 fatty acids in their tissues than normal pigs do.
- Animals
Worm can crawl out of predators
A parasitic worm can wriggle out through a predator's gills or mouth if the predator eats the worm's insect host. With video.
- Health & Medicine
Dementia off the Menu: Mediterranean diet tied to low Alzheimer’s risk
People 65 years of age and older who eat a Mediterranean-style diet that's rich in plant matter and fish and low in saturated fat are less likely than their peers to develop Alzheimer's disease.
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Mutation blocks fat absorption
A newly discovered gene in zebrafish seems to prevent the animals from absorbing fat molecules from their diets.
- Life
Massive count a drop in the bucket
As the decade-long Census of Marine Life totes up thousands of new species, it leaves much yet to discover in the world’s oceans.
