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. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 42 CALIFORNIA FISH AND GAME. FIGURE 3. Photomicrograph of scale from 750 mm albacore. Three annuli can be distinguished. Photographed with an Exacta mounted on a Zeiss stereomicroscope; 1 100 sec, mag. 25 X; film Plus X Pan 135; lighting incident tungsten, no filters. Photograph by A. V. Vogel. Lengths, weights and scales were recorded from the stratified sample of 396 albacore. The majority of the samples was collected at San Pedro a
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 42 CALIFORNIA FISH AND GAME. FIGURE 3. Photomicrograph of scale from 750 mm albacore. Three annuli can be distinguished. Photographed with an Exacta mounted on a Zeiss stereomicroscope; 1 100 sec, mag. 25 X; film Plus X Pan 135; lighting incident tungsten, no filters. Photograph by A. V. Vogel. Lengths, weights and scales were recorded from the stratified sample of 396 albacore. The majority of the samples was collected at San Pedro although 47 were from San Francisco. Scales were collected from two fish in each centimeter-class during each week of the three-month period. The midpoints in the classes were mul- tiples of 10 millimeters; for example, the 65 cm class had a midpoint of 650 mm nnd a range of 645 to 655 mm. Fork lengths of albacore from the length frequeney samples ranged from 51 to 98 cm resulting in 48 classes; however, some contained few fisli. The cxti-emes of the range were inadequately represented for an aging study in the samples taken from the random length distribution. There was too little ma- terial to properly assign ages to the largest or smallest fish or to assess correctly the age composition of a particular cent imcler-class at tlie range extremes. On the average, however, eight scale samples for each (M'utimeter-class were available each mouth to establish the age com- positi()ii. RESULTS Diagnosing annuli necessitated considering several features. An annulus was distinguished b}^ crowding of circuli, discontinuous circuli, and transparent areas as reported by Nose, et al. (1955) who 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 Commissi
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