Bycatch

Photo of dozens of dead shellfish lying on mud.
Photo of boat moving forward at sea. On each side, the boat has one pole pointing away from boat with nets attached
Bycatch, in the fishing industry, is a fish or other marine species that is caught unintentionally while catching certain target species and target sizes of fish, crabs etc. Bycatch is either of a different species, the wrong sex, or is undersized or juvenile individuals of the target species. The term "bycatch" is also sometimes used for untargeted catch in other forms of animal harvesting or collecting.

In 1997, the Organisation for Economic Co-operation and Development (OECD) defined bycatch as "total fishing mortality, excluding that accounted directly by the retained catch of target species". Bycatch contributes to fishery decline and is a mechanism of overfishing for unintentional catch.

The average annual bycatch rate in the U.S. from 1990 to 1999 was 6215 with standard error of 448.

The fisherman bycatch issue originated due to the “mortality of dolphins in tuna nets in the 1960s”

There are at least four different ways the word "bycatch" is used in fisheries:

Given the popularity of recreational fishing throughout the world, a small local study in the US in 2013 suggested that discards may be an important unmonitored source of fish mortality.

This page was last edited on 23 May 2018, at 02:14.
Reference: https://en.wikipedia.org/wiki/Bycatch under CC BY-SA license.

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