Shark discards in selective and mixed-species pelagic longline fisheries

Shark Depredation and Unwanted Bycatch in Pelagic Longline Fisheries

Vulnerability of the Oceanic Whitetip Shark to Pelagic Longline Fisheries

A combination of fisheries dependent and independent data was used to assess the vulnerability of the oceanic whitetip shark to pelagic longline fisheries. The Brazilian tuna longline fleet, operating in the equatorial and southwestern Atlantic, is used as a case study. Fisheries dependent data include information from logbooks (from 1999 to 2011) and on-board observers (2004 to 2010), totaling...

A review of shark bycatch mitigation in tuna longline fisheries

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Results of a short study on by-catches and discards in pelagic fisheries in Scotland \(UK\)

Observers were placed on pelagic vessels in the Scottish fisheries for mackerel (Scomber scombrus), herring (Clupea harengus), “maatje” herring (herring caught just before their first spawning) and argentines (Argentina silus) to monitor by-catch composition and discarding practices. A total of 67 days was spent at sea, 11 on the argentine fleet, 28 on the herring fleet, 12 on the “maatje” herr...

Shark catch in a pelagic longline fishery: Comparison of circle and tuna hooks

The effects of circle hooks on blue shark Prionace glauca catch in a pelagic longline fishery were assessed in fishing experiments on two research essels in the western North Pacific off the coast of Japan from May to September 2005. We used conventional tuna hooks (standard Japanese ook size; 3.8 sun) and two sizes of circle hooks (4.3 sun and 5.2 sun) for each fishing operation and compared c...