News tagged with fish populations

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Group-navigating species may be vulnerable to collapse

Migrating birds flock together and salmon swim upstream in schools because there's a navigational advantage: By traveling in groups, individuals are more likely to get to their destinations – or so a growing body of research ...

dateJul 18, 2016 in Ecology
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Evolutionary split up without geographic barriers

A fundamental question in evolutionary research is: is a geographic barrier dividing the original population into two genetically separated populations required for the origin of new species? Or is so-called sympatric speciation ...

dateJul 05, 2016 in Evolution
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Salmon sickness detected in farmed Canadian fish

Researchers led by a Canadian government scientist have diagnosed potential heart and skeletal muscle inflammation in farmed salmon from British Columbia province, the Canadian fisheries ministry announced Friday.

dateMay 20, 2016 in Ecology
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Overfishing devastates spawning aggregations

Globally declining fish populations are a frequently cited ecological and commercial calamity, but relatively little attention has been paid to the specific threats faced by fish that gather and spawn in large groups, says ...

dateMar 09, 2016 in Ecology
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