. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 94 CALIFORNIA FISH AND GAME 200 180 160 140 o X 120 h- O 2 UJ "* 100 _i < o 80 60- 40- 20 Q 1954 A 1965-70 © 1973-76 0 Froser River. I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 AGE(YEARS) FIGURE 6. Growth of white sturgeon collected in the Sacramento-San Joaquin Estuary in 1954, 1965-1970, and 1973-1976, and in the Eraser River, British Columbia. Eraser River fish ages are adjusted to our method of age designation (a
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 94 CALIFORNIA FISH AND GAME 200 180 160 140 o X 120 h- O 2 UJ "* 100 _i < o 80 60- 40- 20 Q 1954 A 1965-70 © 1973-76 0 Froser River. I 2 3 4 5 6 7 8 9 10 II 12 13 14 15 16 17 18 19 20 21 AGE(YEARS) FIGURE 6. Growth of white sturgeon collected in the Sacramento-San Joaquin Estuary in 1954, 1965-1970, and 1973-1976, and in the Eraser River, British Columbia. Eraser River fish ages are adjusted to our method of age designation (age 0 is the youngest age class). Facts are not available to evaluate the relative significance of the various potential causes of reduced growth. ACKNOWLEDGMENTS Many individuals have contributed to our study. We thank Robert McKechnie, Richard Fenner, Salvatore Mercuric, David Ramczyk, Nileta Schaller, Gregg Schmidt, Tim Morefield, John Grant, Ronald Rogers, Susan Smith, Jerry Webb, and Nancy Holzhauser for technical assistance. John Severa diligently collected samples and allowed us to sample aboard his fishing boat. Jean-Paul Cuerrier, staff limnologist of the Canadian Wildlife Service, and Ivan Donaldson, biologist with the U. S. Army Corps of Engineers, generously gave their time to corroborate our age estimates in 1965-1970. John Horton assisted in data analysis and Nanci Dong drafted the figures. Gary Smith, Donald Stevens, and Harold Chadwick reviewed the manuscript and provided editorial Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original California. Dept. of Fish and Game; California. Fish and Game Commission; California. Division of Fish and Game. [San Francisco, etc. ] State of California, Resources Agency, Dept. of Fish and Game
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