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. Commercial fisheries review. Fisheries; Fish trade. September 1955 COMMERCIAL FISHERIES REVIEW 65 Pacific Oceanic Fishery Investigations SEASONAL ABUNDANCE OF TUNA IN LINE ISLANDS AREA INVESTIGATED BY COMMERCIAL CLIPPER "COMMONWEALTH" (Cruise 3): The distribution and abundance of deep-swimming and surface yellowfin and skipjack tuna in the Line Is- lands area was investigated by the chartered commercial clipper Commonwealth. The vessel returned to Honolulu on | , j- June 17 after a43-Qay cruise scout- ing, trolling, and long lining for [|^. tuna. I Since its departure from Hon- olu
. Commercial fisheries review. Fisheries; Fish trade. September 1955 COMMERCIAL FISHERIES REVIEW 65 Pacific Oceanic Fishery Investigations SEASONAL ABUNDANCE OF TUNA IN LINE ISLANDS AREA INVESTIGATED BY COMMERCIAL CLIPPER "COMMONWEALTH" (Cruise 3): The distribution and abundance of deep-swimming and surface yellowfin and skipjack tuna in the Line Is- lands area was investigated by the chartered commercial clipper Commonwealth. The vessel returned to Honolulu on | , j- June 17 after a43-Qay cruise scout- ing, trolling, and long lining for [|^. tuna. I Since its departure from Hon- olulu on May 7, the 112-ton vessel fished long lines and trolled for yellowfin tuna around Kingman Reef, Christmas, Fanning, Washington, and Palmyra islands of the Line Islands group, which straddle the equator about 2, 000 miles south of Hawaii. This area has been es- tablished as a promising yellowfin tuna fishing ground by intensive exploratory and experimental fish- ing by Honolulu-based Service re- search vessels during the past several years. The purpose of the most recent cruise was to fill in the details of the picture of sea- sonal and annual changes in thea- bundance of tuna in Line Islands waters and to tag tuna for migra- tion studies. The Commonwealth set from 20 to 30 baskets of 11-hook long lines (a total of 220 to 330 hooks) at 11 locations around the Islands, ^ TroUinga Ng YeUDwfin. s/' J Commercial clipper Commonwealth Cruise 3, May 7-June 17, 1955. and spent an additional 13 days in trolling. The best long-lining was found about 5 miles south of Fanning Island, where 21 yellowfin were taken, or per 100 hooks fished, a good catch rate for this type of fishing. At the other locations the abun- dance of tuna was considerably lower, averaging fish per 100 hooks. Inaddition toyellowfin, 6 big-eyed tuna, 3 marlin, and 2 skipjack tuna were taken on the long lines. Trolling with 6 lines for 13 days produced a catch of 100 yellowfin. The best fishing was found at
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