. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. INVESTIGATION OF THE SAND DAB 11 ANTERIOR. Figure 3. POSTERIOR Typical scale of a California sand dab. The fish measured 238 mm. in length and was taken in February, 1947, near the Farallon Islands. in which the circuli are widely spaced represent periods of rapid growth. The break between a winter band of slow growth and the succeeding band of rapid growth stands out as a rather sharply denned line and is here called the annulus (A).
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. INVESTIGATION OF THE SAND DAB 11 ANTERIOR. Figure 3. POSTERIOR Typical scale of a California sand dab. The fish measured 238 mm. in length and was taken in February, 1947, near the Farallon Islands. in which the circuli are widely spaced represent periods of rapid growth. The break between a winter band of slow growth and the succeeding band of rapid growth stands out as a rather sharply denned line and is here called the annulus (A). This marks the end of the year's growth. With respect to these annuli, various irregularities may appear. Approximated circuli sometimes appear between two true annuli so as to form what has been termed an "accessory annulus" (a, Figure 11). This temporary retardation of growth during periods of rapid growth may be interpreted as a result of some unusual circumstance in the life of the individual, such as an injury, disease, starvation, etc. Sometimes these accessory annuli simulate the true annulus so closely as to make accurate age determination difficult. In some scales a check (approximation of circuli) is seen imme- diately outside of the few widely separated circuli around the focus and commonly separated from the latter by six or eight circuli (Figure 6, B). This first check is certainly not an annulus because, in the first place, its appearance is not constant in all fish examined and, secondly, this check if present is shortly followed by another which was observed in young fishes captured in February, 1947, and is certainly the first annulus (Figure 6). The check which is formed immediately outside of the first wide rings around the focus is, therefore, termed a "false ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
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