Smell and behavior: The scents of taking action

In all animals, including humans, smell—the oldest of the five senses—plays a predominant role in many behaviors essential for survival and reproduction. It has been known since ancient times that animals react to odours.

Scientists study under-appreciated fish with special tag

Most people think of salmon jumping upriver to spawn when they consider wild fish in the American Northwest. But another, lesser-known species—the Pacific Lamprey—is also culturally and historically important to the region. ...

Sex-shifting fish: Growth rate could determine sea lamprey sex

Unlike most animals, sea lampreys, an invasive, parasitic species of fish damaging the Great Lakes, could become male or female depending on how quickly they grow, according to a U.S. Geological Survey study published today.

Parasitic fish offer evolutionary insights

Lamprey are slimy, parasitic eel-like fish, one of only two existing species of vertebrates that have no jaw. While many would be repulsed by these creatures, lamprey are exciting to biologists because they are so primitive, ...

Science vs. the sea lamprey

Of all the fishy predators in the Great Lakes, few are more destructive than the sea lamprey. There's something of a horror movie in their approach: jawless, they attach to prey such as salmon, whitefish or trout with a sucker ...

Jawless fish brains more similar to ours than previously thought

Researchers at the RIKEN Evolutionary Morphology laboratory and other institutions in Japan have shown that complex divisions in the vertebrate brain first appeared before the evolution of jaws, more than 500 million years ...

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