Pohnpei, Federated States of Micronesia SEABIRDS AVOIDANCE EFFECT OF TORI-LINES IN THE JAPANESE LONGLINE FISHERY: COMPARISON OF TORI-LINE STREAMERS

SCIENTIFIC COMMITTEE THIRD REGULAR SESSION 13-24 August 2007 Honolulu, United States of America EXAMINATION OF TORI-POLE CONFIGURATION IN MIDDLE-SIZED LONGLINE VESSELS WCPFC-SC3-EB SWG/IP-14

We examined the performance, practicality and effectiveness of tori-poles to explore the configuration suited to middle-sized Japanese longline vessels in the western North Pacific. Experiments on 2 types of poles, 3 types of bird lines and 3 classified lengths were conducted by a commercial longline vessel. Among 3 types of line, 2 heavy line types are characteristically strong type by wind wh...

Evaluation of the Effectiveness of Light Streamer Tori-Lines and Characteristics of Bait Attacks by Seabirds in the Western North Pacific

To improve the effectiveness of tori-lines it is necessary to evaluate the ability of tori-lines to mitigate seabird bycatch and determine what kind of seabird species gather during line settings, attack the bait and are incidentally caught. We conducted two experiments in the western North Pacific and examined the effectiveness for seabird mitigation of light streamer tori-lines which have no ...

Effectiveness of tori line use to reduce seabird bycatch in pelagic longline fishing

Industrial longline fisheries cause the death of large numbers of seabirds annually. Various mitigation measures have been proposed, including the use of tori lines. In this study the efficiency of a single tori line to reduce seabird bycatch was tested on pelagic longline vessels (25-37m length). Thirteen fishing trips were carried out in the area and season of the highest bycatch rates record...

SCIENTIFIC COMMITTEE THIRD REGULAR SESSION 13-24 August 2007 Honolulu, United States of America EFFECTIVE FACTORS OF TORI-POLES IN REDUCING INCIDENTAL CATCH OF SEABIRDS IN THE JAPANESE LONGLINE FISHERY

Effective factors of tori-poles in reducing incidental catch of albatross were examined with the data from Japanese observer program in southern bluefin tuna fishery. A total of 727 observations were used in the analysis. The data in night settings were not used because observed numbers of albatross and other seabirds were not recorded correctly during night-setting. The tori-pole specification...

SCIENTIFIC COMMITTEE NINTH REGULAR SESSION 6-14 August 2013 Pohnpei, Federated States of Micronesia To improve the estimation of species and size composition of the western and central Pacific purse seine fishery from observer based sampling of the catch WCPFC-SC9-2013/ ST-IP-04