Cod and the Detrimental Experience for a Fish of a Catch Process – Acute and Delayed Mortality

Cod and the Detrimental Experience for a Fish of a Catch Process – Acute and Delayed Mortality

Cod and the Detrimental Experience for a Fish of a Catch Process – Acute and Delayed Mortality

 

 

Fascinating video of AIFRB member John Mandelman discussing the recreational fishing side of Cod and "the detrimental experience for a fish of a catch process and acute and delayed mortality."  

You might not know what happens to the fish, because when you throw it back in the ocean, it dies. These are the two contributors to what is called discard mortality. We always think when we throw a fish back, it’s going to be okay, but that is predicated on the ultimate survival of the animal, and it may not survive. So it’s not just the fish that are being kept that drives the total mortality in the fishery, but it’s also the animals that die once they are thrown back. 

 

The Atlantic cod—a culturally, economically and ecologically important fish species with a rich New England history—has not recovered from stock collapses in recent years, despite substantial management intervention and a major reduction in commercial fishing effort. Although research attention has increased, many questions on cod meant to aid management and promote recovery are not yet fully answered, such as what happens to those cod that are caught by certain fishing gears, but not harvested. Dr. John Mandelman describes ongoing work by the New England Aquarium and colleagues to better understand the fate of undersized cod that by law must be released after capture in recreational fisheries, and which strategies may increase the probability of survival. Dr. Mandelman also provides historical context on cod in the region, and describe how evolving tracking technologies are being used to answer important fisheries questions.  Credit: WGBH Public Media, Boston

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