Study

Development of a trawl efficiency device (TED) for Australian prawn fisheries. II. Field evaluations of the AusTED

  • Published source details Robins-Troeger J.B., Buckworth R.C. & Dredge M.C.L. (1995) Development of a trawl efficiency device (TED) for Australian prawn fisheries. II. Field evaluations of the AusTED. Fisheries Research, 22, 107-117

Actions

This study is summarised as evidence for the following.

Action Category

Fit a size-sorting escape grid (rigid or flexible) to a prawn/shrimp trawl net

Action Link
Marine Fish Conservation
  1. Fit a size-sorting escape grid (rigid or flexible) to a prawn/shrimp trawl net

    A replicated, paired, controlled study (year not given) of soft seabed at five coastal sites in the Coral Sea, Australia (Robins-Troeger et al. 1995), found that when a catch escape system, incorporating a flexible size-sorting escape grid (‘AusTED bycatch reduction device’) was fitted to a prawn trawl net, catch of unwanted fish was reduced at three of five sites, compared to a standard trawl net without a grid system. At three sites, fewer (33–59% weight) unwanted fish were caught in nets with grid systems compared to standard nets, whereas at two sites the reduction in weight (11–12%) in nets with grids was not significantly lower. The size (and quality) of the commercial catch of prawns Penaeidae was similar between nets (grids: 91–103% of standard net catch). Trials were done using twin prawn nets, one with a grid system and one without, towed simultaneously by a 15 m trawler. In one trawl net, a system incorporating a flexible inclined grid with an escape gap at the top, a large mesh panel and a guiding funnel (AusTED) was installed in front of the codend. Between 13–27 deployments of 60 min were conducted at each of five sites of southeast Queensland. The year(s) the study took place was not reported.

    (Summarised by: Rosslyn McIntyre)

Output references

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