8,297 results
8,297 results for: Fish
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19299
This article could leave the impression that the evolutionary significant unit (ESU) is the de facto concept employed for all listing decisions under the Endangered Species Act. In fact, the ESU has not been used in the vast majority of recent listing decisions under the act. Nor should it be. The act allows the National […]
- Animals
Snapping shrimp whip up a riot of bubbles
High-speed video and fancy math demonstrate that snapping shrimp make so much noise by popping bubbles.
- Chemistry
Toxic runoff from plastic mulch
Pesticide runoff from tomato fields covered with sheets of plastic can kill fish, clams, and other aquatic life.
- Animals
Beetle fights bass in mouthwash duel
A whirligig beetle duels with a hungry fish by dribbling out a repulsive chemical while the fish tries to rinse it off.
- Paleontology
Listening to fish for extinction clues
Tiny fossils from fish that survived worldwide extinctions about 34 million years ago may reveal that cooler winters caused the die-off.
- Animals
Shielded cells help fish ignore noise
Fish can sort out the interesting ripples from the background rush of water currents through sensors shielded in canals that run along their flanks.
- Paleontology
Early Biped Fossil Pops Up in Europe
A newly described, nearly complete 290-million-year-old fossil of an ancient reptile pushes back the evidence for terrestrial bipedalism by 60 million years.
- Archaeology
Massive Fishery Resurfaces in Amazon
Native groups in an Amazonian region of Bolivia built a large-scale fishery and other earthworks at least 300 years ago, before the Spanish conquest.
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Lamprey cyborg sees the light and responds
Researchers have paired the brain of a sea lamprey with a small robot that can detect and move around in response to light.
- Ecosystems
Fly may be depleting U.S. giant silk moths
A parasitic fly introduced to fight gypsy moths starting in 1906 may be an overlooked factor in the declines of giant silk moths.
- Earth
Salmon puzzle: Why did males turn female?
Most of the spawning female Chinook salmon in one part of the Columbia River appear to have started life as males.
- Paleontology
Subway dig in L.A. yields fossil trove
Fossil finds made when a subway line was extended from Los Angeles into the San Fernando Valley include bones of mastodons, ground sloths, extinct bison and camels, and 39 new species of fish.
