. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 292 CALIFORNIA FISH AND CAME < I u <. CARAPACE LENGTH (mm) FIGURE 4. Probit catch ratio estimated from probit regression. TABLE 5. 50% Selection Lengths, St. Errors, and 95% Derived from the Least Squares Regression Line. 95% CI. (mm) ± ± ± ± .75 Mesh size 50% selection St. error (inches) length (mm) (mm) .59 .49 .3
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 292 CALIFORNIA FISH AND CAME < I u <. CARAPACE LENGTH (mm) FIGURE 4. Probit catch ratio estimated from probit regression. TABLE 5. 50% Selection Lengths, St. Errors, and 95% Derived from the Least Squares Regression Line. 95% CI. (mm) ± ± ± ± .75 Mesh size 50% selection St. error (inches) length (mm) (mm) .59 .49 .38 .27 TABLE 6. 1956 April-June 1-year-old Length Frequency Fitted to Normal Distribution Carapace Observed Expected (E-0) ^ length (mm) frequency frequency E 11 8 1,125 12 84 13 294 14 439 15 230 16 47 TOTAL 1102 1102 ;x'= Because of the short life span of California ocean shrimp, the high natural mortality rate of 1-year-olds, and the wastage during processing (Dahlstrom 1972), it seems reasonable to protect the 1-year-olds so that the fishery can be carried on during the next season. Before any definite spawning ecruitment relationship is found, one criterion of regulating the mesh size woi d be based upon the escapement rate for the 1-year-olds. What I suggest is an average. 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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