340 likes | 463 Views
Coral Triangle Fishers Forum. 15-17 June 2010 Bali, Indonesia. Bycatch Initiatives for Pacific Islands from SPC. Steve Beverly, Secretariat of the Pacific Community. Themes. Fishing gear experiments Protected species ToT workshop Awareness materials Tools Databases Lessons learned.
E N D
Coral Triangle Fishers Forum 15-17 June 2010 Bali, Indonesia
Bycatch Initiatives forPacific Islands from SPC Steve Beverly, Secretariat of the Pacific Community
Themes • Fishing gear experiments • Protected species ToT workshop • Awareness materials • Tools • Databases • Lessons learned
Deep setting technique, or • Effects of eliminating shallow hooks from tuna longline sets on target and non-target species in the Hawaii-based pelagic longline fishery
No shallow hooks • Reduce bycatch of epipelagic and protected species • Ensure that all hooks fish below 100 meters of depth • Determine if method is operationally feasible within existing fishery • Analyze changes in catch composition
Method • Uses mainline as floatline • 3 kg lead weights are attached directly to mainline to sink all gear below 100 meters • TDRs attached to all sets at first and middle hook positions • 2000 hooks per set
Operational plan • 7 trips • 90 sets - alternated • 45 control vs 45 deep sets • No running or time break between paired sets • Used same gear/bait for all sets • 14 sets per trip • Most trips lasted 21 days • Trips ran from June-December 2006
Catch % by gear type Deep setting: Increases No effect Decreases
Lessons learned • Fisheries dependent experiments work better if the vessel has been chartered or otherwise compensated • Just because a mitigation method works well does not mean that it will be taken up or put into regulations • Fishermen are very concerned about cost – in time and money of mitigation methods • Fishermen come up with solutions
Large circle hook experiments • Establish cooperative research relationships • Test large circle hooks in existing Pacific Island domestic longline fisheries • Determine the efficacy of large circle hooks at catching target species compared with the hooks currently in use in the fisheries • Promote the use of large circle hooks in the fisheries
What is a circle hook? Polynesian hook Steel circle hook Point/shank 90o Rotating hook
Other longline hooks Japan tuna hook J hook/Spanish hook Terashima hook
Method • Change half of vessels’ hooks to16/0 stainless steel offset circle hooks • Begin first set by alternating hooks • All other sets have a random mixing of hooks • Maintain a 50/50 ratio • Monitor all catch by hook type • Make no other changes to fishing operations • Utilize local observers
Lessons learned • Many fishermen are already using circle hooks • Cooperative research involving fishermen, fisheries departments, RFMOs, IGOs, and NGOs can work well • Identification of hooks by type and size is very important • 50-100,000 hooks needed for analysis
Lessons learned • Training of Trainers probably needs to be an ongoing activity because of turnover • Resource materials and/or protected species course should be delivered as a generic finished product that can be amended according to individual country needs and practices • Fulfills obligations of exporting countries
Awareness materials • Manuals • Brochures • Posters/stickers • Species ID guides
Lessons learned • Print limited numbers of awareness materials as things change rapidly and mistakes are made (eg, teracima/Terashima) • Initial bi-lingual or tri-lingual material saves translation and reproduction costs down the road • Include distribution costs in budget proposals • Ship as cargo not as baggage
Tools given out by SPC • De-hookers • Line cutters • Bolt cutters • Dip nets
Lessons learned • Money can be saved by being innovative. Line cutter made with seat belt cutter cost $2.50. Commercial line cutter costs $200. • De-hookers can be made from common materials • Buying in bulk saves money. • De-hookers, line cutters, and dip nets have other useful applications on a longline boat so are an easy sell.
Bycatch Databases • Catch and effort database from logbooks and observer reports – in progress at SPC • Document database – in progress at SPC • Lessons learned – budget a lot for this kind of activity – it takes longer than you think, set up data bases as living documents, and hire a webmaster