. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 54 DEPARTMENT OF FISH AND GAME unloading and departure times for succeeding trips, thus effecting a reduction in the total number of trips and the total tonnage. Solutions to the industry's problems were sought on all fronts, from intensified advertising campaigns to seeking governmental aid via direct subsidy and/or tariffs. Efforts were not without some reward, particu- larly in the increase of consumption. The ultimate objective of
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 54 DEPARTMENT OF FISH AND GAME unloading and departure times for succeeding trips, thus effecting a reduction in the total number of trips and the total tonnage. Solutions to the industry's problems were sought on all fronts, from intensified advertising campaigns to seeking governmental aid via direct subsidy and/or tariffs. Efforts were not without some reward, particu- larly in the increase of consumption. The ultimate objective of the department's tuna in- \estigation is the same as for other fisheries under study by the iMarine Fisheries Branch. That is to ob- tain necessary information on which to base recom- mendations for such management of marine life as is necessary to allow a continued harvest at the highest possible level. This requires determinations of the size of the stocks, fluctuations in abundance, levels of ex- ploitation, etc. Tuna research activities during the biennium were directed toward the solution of these problems. Tagging Program The full scale tagging program, initiated during the preceding biennium, was actively carried forward during this one. Eleven tagging teams sailing on as many commercial fishing vessels, liberated over 6,200 tuna with the department's originally designed tags of \\ hire vinyl plastic tubing. Tuna fishing from the stem of o modern iuna clipper in the eastern fropicat Pacific Ocean. Eleven teams from the department tagged tuna aboard such vessels during the biennium. (Fish and Game Photo). Accumulated tag return data are beginning to un- fold the patterns of movements of yellowfin tuna and albacore. The trans-Pacific migration of albacore was further substantiated by additional recoveries in Japan. Yellowfin were shown to move from southern Mexico northward to central Baja California, gross move- ments of almost a thousand miles. These movements hint at
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