Capture Technology and Mitigation

• TED are turtle excluder devices
• turtle excluder device

  
• types of gear

  A) midwater gillnet

  B) bottom gillnet

  C) midwater trawl

  D) bottom trawl

  E) bottom longline

  
• TED's are used mainly in the Philippines in shrimp fisheries
• TED's came about from public lobbying
• turtle excluder device


  modified net with a grate and flap allowing the turtle to escape
• TED's are designed with the fishing industry so fishers don't lose profit
• Shrimp-fish separators 


  like TED's but use Norman grates to allow smaller organisms to escape
• shrimp-fish separators

  
• LED lights 


  help reduce bycatch by allowing fish to escape towards to light
• Size selective grids


  changing the mesh size and incorporating openings for smaller organisms to escape
• size selective grids

  
• size selective grids are often used in lobster pots
• size selective grids

  
• Square-mesh windows


  sqaure mesh doesn't change shape allowing smaller species to escape
• nets use diamond shaped mesh which shrinks as catch increases preventing escape of bycath
• square-mesh windows

  
• Medina panel and purse seines 


  using a mesh with cork floats that slightly sink allowing charismatic species to escape
• Medina panel in purse seines

  
• Bird scaring and longlines 


  using weights that sink lines below bird diving depth, circle hooks, shooting longlines down in the water
• circle hooks allow sharks easier to escape
• orcas and sperm whales floss longlines to remove fish that are already caught
• to avoid Odontoceti flossing: short long lines, increased hauling speed, move on technique, simultaneous vessels
• avoiding flossing may require more money which is not always accessible
• selective trap


  near shore nets where target fish get caught in the central trap
• selective traps often work with a grate to prevent seal poaching
• selective trap nets

  
• dredges, beam trawls, and otter trawls can damage the seabed
• skids can be added onto dredges to decrease environmental degradation