. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 326 CALIFORNIA FISH AND GAME. 360 480 600 NUMBER OF DAYS FIGURE 3. Cumulative returns of tantalum and stainless steel wires. procedures showed significant differences between the returns (at the 5 percent level) for the shorter length classes, whereas the returns for the longer length classes approached, but did not reach, the significant level. A plausible explanation for these differences is that the medium soft stainless steel is c
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 326 CALIFORNIA FISH AND GAME. 360 480 600 NUMBER OF DAYS FIGURE 3. Cumulative returns of tantalum and stainless steel wires. procedures showed significant differences between the returns (at the 5 percent level) for the shorter length classes, whereas the returns for the longer length classes approached, but did not reach, the significant level. A plausible explanation for these differences is that the medium soft stainless steel is considerably less flexible than the other two metals and is therefore more apt to cut its way through the soft flesh of the smaller fish. Further, it is more difficult to tie a knot providing the desired amount of slack in the medium soft stainless steel, especially when tagging small fish. With repeated bending tantalum and dead soft stainless steel break much more readily than does medium soft stainless steel. This may explain the smaller number of returns for the larger fish in the case of the former. TABLE 2 Mean Number of Days at Large and Standard Deviation for Tantalum and Stainless Steel Wire Type of -wire Number returned Mean number of days at large Standard deviation Tantalum. _-______. 63 84 57 246 201 236 ± DpaH soft stainlpjss stppi ± snft tpmppr stainlpss stppl ± It is of interest to compare the retention period of these tags with those used in earlier experiments. Merriman (1941) tagged 2,573 striped bass with modified Scottish plaice tags located beneath the dorsal fin, attaching them by means of nickel pins. The total return was 21 percent, with a maximum elapsed time of 608 days between tagging and recovery. Clark (1936) reported a recovery of 10 percent for 1,544 small istriped bass tagged beneath the dorsal fin with disks and nickel pins. The recovery period ranged from 4 to 477 days. Morgan and Gerlach (1950), tagging
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