Cod 'supergenes' reveal how they are evolving in response to overfishing

By Tom Cameron, Senior Lecturer in Ecology, University of Essex

Cod “supergenes” have shed light on how they respond to overfishing, and these supergenes could make them more resilient to other environmental changes. That’s according to a new study published by scientists in Norway. This could be good news, in that cod have genetic architecture in place that will permit them to respond to climate change – but for now this is rather speculative.

For those of us who study how fish species evolve under strong selective pressure from commercial fishing, cod has been a…

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