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Aquatic mammals and other species. Discussion Paper, Part E. Salmon Aquaculture Review; Technical Advisory Team Discussion Papers Vol. 3, British Columbia Environmental Assessment Office.

Barrier nets effectively excluded seals and sea lions from fishing nets in British Columbia.

Results of the 1986-87 California sea lion-steelhead trout predation control program at the Hiram M. Chittenden Locks. NWAFC Processed Report 88-30, Alaska Fisheries Science Center, NMFS, NOAA, Seattle, Washington.

Over time, noxious bait, consisting of dead steelhead containing lithium chloride, did not prevent California sea lion (Zalophus californianus) predation of Washington steelhead trout (Salmo gairdneri). Acoustic harassment devices worked only for a short time in reducing California sea lion depredation before sea lions began to habituate to sounds.

Reducing seabird bycatch in longline fisheries by means of bird-scaring lines and underwater setting

Bird-scaring lines and an underwater setting funnel reduced seabird bycatch in longlines off the coast of Norway. Catch of haddock (Melanogrammus aeglefinus), torsk (Brosme brosme), and ling (Molva molva) increased with use of the underwater setting funnel.

Deterring albatrosses from contacting baits during swordfish longline sets

Dyed bait, streamer lines, and weighted bait used in Hawaii longlines each resulted in reduced contact between seabirds (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) and bait.

Hawaii Longline Seabird Mortality Mitigation Project.

Dyed bait, alternative offal discards, bird-scaring devices (streamer lines & towed buoys), and night sets reduced seabird (Black-footed (Phobastria nigripes) and Laysan (Phoebastria immutabilis) albatrosses) bycatch in the Hawaiian swordfish and tuna longline fisheries. Alternative offal discards worked by distracting seabirds from hooked bait. Dyed bait did not affect the catch of target and marketable species (all marlin and tuna species, swordfish, shortbill spearfish, opah, wahoo, and dolphinfish), but it reduced catch of blue sharks.

Annual Report on the Hawaii Longline Fishing Experiments to Reduce Sea Turtle Bycatch under ESA Section 10 Permit 1303

Night sets reduce bycatch of seabirds in the Hawaiian swordfish longline fishery.

Preservation of juvenile hake (Merluccius merluccius, L.) in the western Mediterranean demersal trawl fishery by using sorting grids

Sorting grids were found to reduce bycatch of juvenile hake (Merluccius merluccius) in demersal trawl fishery in the western Mediterranean Sea.

Reduction of seabird bycatch in salmon drift gillnet fisheries: 1995 sockeye/pink salmon fishery final report

Opaque mesh netting placed strategically on gillnets decreased bycatch of rhinoceros auklet (Cerorhinca monocerata) and common mure (Uria aalge) seabirds but also decreased catch of target salmon species in the Puget Sound, USA.

Design, testing, and evaluation of an acoustic release system for offshore lobster pot buoy lines

An acoustic release system for offshore lobster buoy lines was successfully developed and tested for reducing right whale (Eubalanea glacialis) entanglements with vertical lines in the Gulf of Maine and southern New England lobster pot fishery.

Field tests of acoustic devices on groundfish gillnets: assessment of effectiveness in reducing harbour porpoise by-catch

Gillnets equipped with acoustic pingers caught only one harbor porpoise (Phocoena phocoena) compared to 42 caught in control nets off of New Hampshire, USA. Alarms sounds are above groundfish hearing and are not expected to affect fish catch.

Interactions between free-ranging dolphins (Tursiops truncatus) and passive acoustic gill-net deterrent devices

Passive acoustic deterrents increased avoidance actions of bottlenose dolphins (Tursiops truncatus) to barriers simulating surface-set gillnets in the Moray Firth, Scotland.

Comparison of three seabird bycatch avoidance methods in Hawaii pelagic longline fisheries

Side-setting in combination with a bird curtain resulted in the lowest seabird-- Black-footed albatross (Phoebastria nigripes) and Laysan albatross (Phoebastria immutabilis)--capture rate when placed on pelagic longline gear for tuna and swordfish in Hawaiian waters when compared to underwater setting chutes and blue-dyed bait.

Preliminary report of side-setting experiments in a large sized longline vessel

Side-setting of longline fishing gear in the western North Pacific deterred seabirds-- Black-footed albatross (Phoebastria nigripes) and Laysan albatross Phoebastria immutabilis)?from taking bait and improved the sinking rate of baited hooks.

Performance in 2005 of an alternative leader design on the bycatch of sea turtles and the catch of finfish in Chesapeake Bay pound nets, offshore Kiptopeake, VA: Data and results of preliminary analyses

An alternative leader design reduced loggerhead (Caretta caretta) sea turtle interactions in a Chesapeake Bay pound net fishery for finfish. There was no change in catch of weakfish (Cynoscion regalis), croaker (Micropogonias undulates), and harvestfish (Peprilus alepidotus).

Industry trials of a modified sea scallop dredge to minimize the catch of sea turtles

A chain mat placed on Northwest Atlantic dredge gear eliminated bycatch of sea turtles: loggerhead (Caretta caretta), leatherback (Dermocheles coriacea), and green sea turtles (Chelonia mydas). The chain mat reduced catch by 6.71%.

Depredation of catch by bottlenose dolphins (Tursiops truncatus) in the Florida king mackerel (Scomberomorus cavalla) troll fishery

A quick-release metal wire added to the Florida king mackerel troll fishery reduced depredation of catch by bottlenose dolphin (Tursiops truncatus). There was no impact on king mackerel catch.

Functionality of a full-sized marine mammal exclusion device

An excluder device, tested on a trawl net in a flume tank with dummy seals in New Zealand excluded dummy seals from the codend of the net. The modifications were trialed to address bycatch of Hookers sea lions and New Zealand fur seals.

Further development of a dolphin exclusion device

An excluder device, tested in the United Kingdom bass pair trawl fishery, reduced bycatch of common dolphins (Delphinus delphis). There was a negligible loss of target fish (<1%).

Performance Assessment of Underwater Setting Chutes, Side-Setting, and Blue-Dyed Bait to Minimize Seabird Mortality in Hawaii Pelagic Longline Tuna and Swordfish Fisheries

Underwater setting chutes, blue-dyed bait, and side-sets each reduced the bycatch of seabirds (Laysan and black-footed albatross and short-tailed shearwater) in the Hawaiian longline tuna and swordfish fisheries. Side-sets showed the most promise for a bycatch mitigation technique while blue-dyed bait was the least effective at reducing seabird bycatch and shows the least promise of these methods as an effective bycatch mitigation strategy.

Loggerhead turtle, finfish and shrimp retention studies on four excluder devices (TEDs)

Turtle excluder devices reduce sea turtle and non-target finfish (Atlantic croaker (Micropogonias undulateus), spot (Leiostomus exanthurus), sea catfish (Arius felis), and weakfish (Cynoscion regalis)) bycatch in the Gulf of Mexico prawn trawl fishery. Catch of targeted shrimp varied by location and TED configuration, but there was no significant difference in shrimp catch rates in 3 of the 4 TEDs when compared with a control net. One experimental TED in Texas exhibited a decrease in shrimp catch.

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