. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. AOE OF PACIFIC MACKEREL 183 40 2 30 O < Z U 20 - 10 ^. ^ H. HYATT I E. KNAGGS ^ R PARRISH m. I I I I IV V I AGE - GROUP FIGURE 1. A comparison of the 1960-61 season age assignments by different otolith readers. The results show a rehitively close agreement between our inde- pendent readings and considerable disagreement between our readings and the original age assignments used in tlie literature (Figure 1). There was a marked incr
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. AOE OF PACIFIC MACKEREL 183 40 2 30 O < Z U 20 - 10 ^. ^ H. HYATT I E. KNAGGS ^ R PARRISH m. I I I I IV V I AGE - GROUP FIGURE 1. A comparison of the 1960-61 season age assignments by different otolith readers. The results show a rehitively close agreement between our inde- pendent readings and considerable disagreement between our readings and the original age assignments used in tlie literature (Figure 1). There was a marked increase in older fish in our readings. This increase in older fish decreased the mean size per age-group to levels comparable to tliose reported by Fitch (1951 j. Because of our disagreements with the age assignments in the 1960-61 season it became necessary to re-read the otoliths from the other seasons. However, due to tlie large number of otolitlis taken during the 1058-59 througli 1963-61 seasons (3,()l(i), we decided that all otoliths would not be read by each author. Irstead, each read approx- imately one half of the otoliths. When disagi-eement occurred between these readings and the age assignments used in the published the other author read these disputed otoliths. If this additional reading agreed with either the publislied material or the first re-reading, this age was accepted. If all three readings were in disagreement, the authors jointly agreed to an age or the otoliths in disagreement were omitted. Only 17 otoliths of the 3,016 taken during the six seasons were thus omitted as unreadable (Appendixes A, B, C, D, E, F).. 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 Fr
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