. Contributions to Canadian biology. Marine biology; Natural history. BIOLOGY OF THE MUTT0NFI8H 73 5. AGE ESTIMATION AND EATE OF GROWTH. An estimation of the age and rate of growth of the muttonfish has been made from a study of the otoliths. The scales are very small and show no uniformity in annual growth area-. The vertebrae were found to be very unsatisfactory in the older fish because of the difficulty of distinguishing the rings toward the margins. How- ever, in the younger specimens they were a valuable check on the otolith counts. The otoliths sire comparatively small and regular in fo
. Contributions to Canadian biology. Marine biology; Natural history. BIOLOGY OF THE MUTT0NFI8H 73 5. AGE ESTIMATION AND EATE OF GROWTH. An estimation of the age and rate of growth of the muttonfish has been made from a study of the otoliths. The scales are very small and show no uniformity in annual growth area-. The vertebrae were found to be very unsatisfactory in the older fish because of the difficulty of distinguishing the rings toward the margins. How- ever, in the younger specimens they were a valuable check on the otolith counts. The otoliths sire comparatively small and regular in form and show clearly alternate light and dark areas. Final counts of the bands were made with the low power objec- tive of the compound microscope upon ear-stones cleared and mounted in glycerine. No grinding down of the stones was necessary. In all, otoliths from ninety-one speci- mens have been examined. The method of computation has been somewhat the same as. 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 Biological Board of Canada; Canada. Marine Biological Station. Toronto, Biological Board of Canada
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