Study

Fishery practice versus experimental design: preliminary results of the introduction of protective sieves in the eel fyke-net fishery of the Vistula Lagoon, Poland

  • Published source details Psuty-Lipska I. & Draganik B. (2005) Fishery practice versus experimental design: preliminary results of the introduction of protective sieves in the eel fyke-net fishery of the Vistula Lagoon, Poland. Fisheries Research, 76, 146-154.

Actions

This study is summarised as evidence for the following.

Action Category

Modify fishing trap/pot configuration

Action Link
Marine Fish Conservation
  1. Modify fishing trap/pot configuration

    A replicated, controlled study in 1999–2004 of three sand and mud seabed areas in Vistula Lagoon, Baltic Sea, Poland (Psuty-Lipska & Draganik 2005) found that fyke nets modified with protective sieves (a bycatch reduction device) retained fewer undersized and unwanted individuals of four of four commercial fish species compared to conventional fyke nets without protective sieves. In catches with sieves, the length frequencies of the four most important commercial fish species differed to catches without sieves, with fewer fish of smaller sizes (data presented graphically) and higher average lengths (bream Abramis brama: 29 vs 20 cm, pikeperch Sander lucioperca: 26 vs 16 cm, roach Rutilus rutilus: 18 vs 15 cm, perch Perca fluviatilis: 18 vs 14 cm). Incidental fish catch was sampled at three sites in the brackish Vistula Lagoon (838 km2) from commercial fyke net catches targeting European eel Anguilla Anguilla. In May 2004, the fyke nets sampled (12 deployments) were fitted with selective sieves with openings of 20 × 65 mm to allow fish escape. In May 1999 standard fyke net deployments (22) were sampled (see paper for gear specifications). Captured fish were sorted by species, weighed, and their lengths measured.

    (Summarised by: Leo Clarke)

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