The birth of a male sex chromosome in Atlantic herring

The evolution of sex chromosomes is of crucial importance in biology as it stabilizes the mechanism underlying sex determination and usually results in an equal sex ratio. An international team of scientists, led by researchers ...

Hungry bluefin tuna in a sea of plenty

Bluefin tuna are going hungry in a sea full of fish because their foraging habits are most efficient with larger—not necessarily more abundant—prey, according to a study led by a University of Maine marine scientist.

European fisheries flip with long-term ocean cycle

A sudden switch from herring to sardines in the English Channel in the 1930s was due to a long-term ocean cycle called the Atlantic Multidecadal Oscillation (AMO), an international study shows. This is the first evidence ...

Fish skin structure explains biological cloaking

The highly effective optical means by which silvery fish, such as the European sardine and Atlantic herring, camouflage themselves from predators is explained this month in Nature Photonics.

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