. Commercial fisheries review. Fisheries; Fish trade. 32 COMMERCIAL FISHERIES REVIEW Vol. 19, No. 12 In an attempt to locate other skipjack concourses the John R. Manning surveyed areas off Halawa, Molokai; Kaena Pt., Lanai; Barking Sands, Kauai; Lehua Rock, aind a shallow bank off Niihau, but no skipjack were found. At the bank east of the southern tip of Niihau, however, little tuna schools were attracted to the vessel on 3 out of 4 chumming attempts. note: also see commercial fisheries review. NOVEMBER 1957, PP. 26 AND 27. Oregon SALMON TAGGING PROGRAM AT BONNEVILLE DAM COMPLETED: A total o
. Commercial fisheries review. Fisheries; Fish trade. 32 COMMERCIAL FISHERIES REVIEW Vol. 19, No. 12 In an attempt to locate other skipjack concourses the John R. Manning surveyed areas off Halawa, Molokai; Kaena Pt., Lanai; Barking Sands, Kauai; Lehua Rock, aind a shallow bank off Niihau, but no skipjack were found. At the bank east of the southern tip of Niihau, however, little tuna schools were attracted to the vessel on 3 out of 4 chumming attempts. note: also see commercial fisheries review. NOVEMBER 1957, PP. 26 AND 27. Oregon SALMON TAGGING PROGRAM AT BONNEVILLE DAM COMPLETED: A total of 8,350 adult salmon were tagged at Bonneville Dam by the Oregon Fish Commis- sion during the summer and fall of 1957 in the final phase of a 2-year study to deter- mine what influence The Dalles Dam has had on salmon migration in the Columbia River. A Commission biologist, directing the migration study, said the tagging phase of the investigation was completed late in September, but final results will not be known for several months. The study is being made under a U. S. Army Corps of Engineers fisheries engineering research program dealing with fisheries problems related to dam construction in the Columbia basin. The study was designed to compare salmon migration rates before and after completion of The Dalles Dam. Migration rates of king and sockeye (blueback) salmon were obtained in 1956, before The Dalles Dajn was completed, by putting nimibered discs on fish at Bonneville Dam. A portion of the tagged fish were recaptured at McNary Dam to establish the average number of days it took the fish to swim the 145 miles between Bonneville Dam and McNary Dam. This past summer, with The Dalles Dam extending entirely across the Columbia River channel, fish tagging at Bonneville Dam was repeated. The biologist stated that "When average migration rates for tagged fish recov- ered at McNary Dam this year are compared with last year's figures, we should be in the position to know i
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