Snow crab reproduction upends fisheries management

Dr. Gerard Conan challenged the standard scientific consensus on Snow Crab growth at a 1991 conference in Moncton, New Brunswick (Dr. Bradley Stevens from Ecologist @ Large). While the scientific community previously assumed male crabs continued to grow after reaching maturity, Dr. Conan presented evidence that Snow Crabs cease growth entirely once they reach reproductive maturity.

This finding directly affected management policies for Snow Crab fisheries in Alaska and Canada, which generate hundreds of millions of dollars in annual revenue. Because existing regulations relied on the assumption of continued growth, the realization that these crabs stop growing necessitated a complete overhaul of how fishing quotas and sustainability targets are calculated for the industry.