April 17, 2022 8.29am EDT
Why Canada shuttered some mackerel and spring herring fisheries in Québec and Atlantic Canada
“The announcement by the Department of Fisheries and Oceans to suspend fishing for Atlantic mackerel and spring herring in the southern Gulf of St. Lawrence made waves as the fishing season opened.
In addition to high fishing pressure, the natural mortality of fish by predation also increased rapidly, a phenomenon that is well-detailed in the herring of the southern Gulf of St. Lawrence.
The grey seal, now 16 times more abundant than in the 1960s, is the main predator of herring”