Study

Gear-dependent size selection of snapper, Pagrus auratus

  • Published source details Otway N.M., Craig J.R. & Upston J.M. (1996) Gear-dependent size selection of snapper, Pagrus auratus. Fisheries Research, 28, 119-132

Actions

This study is summarised as evidence for the following.

Action Category

Use hook and line fishing instead of other commercial fishing methods

Action Link
Marine Fish Conservation
  1. Use hook and line fishing instead of other commercial fishing methods

    A replicated, controlled study in 1989–1993 at three seabed sites in the Tasman Sea off New South Wales, Australia (Otway et al. 1996) found that using longlines reduced the capture of unwanted small snapper Pagrus auratus compared to using trawls. At all three sites, snapper length caught on longlines was higher than those caught in trawls (longline: 252-317 mm, trawl: 193-266 mm). Overall, 26% of the 274 snapper caught on longlines were under the minimum legal size compared to 89% of 500 snapper caught in trawls. Trawling and longlining was done at the same three sites at three-month intervals from autumn 1989 to autumn 1993. At each site, three trawl hauls were done with a 42 mm diamond-mesh codend net, towed at 2.5 knots, for 20 minutes. A longline of 33 circle hooks of three different sizes baited with squid was used. At each site, 12 longline deployments were set for 2.5 h. Full gear specifications are detailed in the original paper. The length of all fish was recorded.

    (Summarised by: Chris Barrett)

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 18

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.


Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust