WASHINGTON (Cont. ) 



Columbia River; began 1954, to close 1957; $61,200; J. E. Mason, Leader. 

 Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



6. Sonic Fish Tracking 



This project is developing and using echo sounding equipment to track 

 the movements and obtain detailed information on the behavior patterns of up- 

 stream migrant adult salmon under natural conditions in relation to dams in 

 the northwest. A sonic fish tag is attached to an adult salmon and its move- 

 ments are tracked with calibrated sonic receiving equipment which automatically 

 "homes" on the signal transmitted by the tag and pinpoints the position of the 

 fish. Resulting information will aid in the design and location of fish passage 

 facilities at new dams. 



Seattle; began 1954, continuing; R26,508; Parker S. Trefethen, Leader; 

 reports available. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



7. Fresh Water Survival of Bluback Salmon (O. nerka) on the Okanogan River 



This project was initiated to conserve the Okanogan River blueback sal- 

 mon run during and following construction of flood control projects. The 

 following are the general objectives: (1) check incubating eggs in gravel for 

 mortalities, (2) determine time fry emerge from the gravel and migrate to 

 the lake so that flood control construction work can proceed, (3) make obser- 

 vations of spawning, and (4) study productivity following completion of flood 

 control project. 



Washington State Department of Fisheries and Canadian Department of 

 Fisheries cooperating; Okanogan River; began 1951, to close 1963; $16,531; 

 K. G. Weber, Leader. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



8. Electronic Fish Counting 



The major objective is to develop automatic systems to count anadromous 

 fish by species and telemeter counts to a central station. Instruments have 

 been developed to count salmon and modifications are rapidly being developed. 

 Also important is developing the art of using the systems in typical installa- 

 tions. There are plans to modify the consecutive -type counter to battery 

 power, and for use in a portable unit. A photographic unit is being studied and 

 planned for improved counting. There is continued development of passage 

 tvmnels to meet requirements of specific field-test sites. 



Seattle; began May 1954, continuing; $22,000; Julius Rockwell, Jr. , Leader; 

 reports available. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



9. North Pacific Salmon Research Investigations 



The basic objective of this investigation is to distinguish the races of Pacific 

 salmon of the United tates, Canada, and Alaska from the Asiatic stocks of 

 salmon. The studies making up the investigation are: salmon serology, age 

 (scale) analysis, meristic studies (morphology and morphometries), parasi- 

 tology, oceanographic studies, tagging on high seas, ocean distribution 

 studies, and osteological studies. Collections of salmon are made on the high 

 seas and in the coastal areas of the United States, Canada, and Alaska. During 

 the summer of 1955, 8, 500 salmon were collected, 5, 500 of which were used 

 for meristic studies. The past summer, 24, 000 salmon were collected to be 

 used as follows: 19, 000 for meristic studies, 3, 000 for parasitology, 1, 000 for 

 osteological studies, and 1,000 were sent to Japan. The osteological studies 

 are being carried out by Canada. 



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