Abstract
The time-course changes in calcium and phosphorus contents, dry weight, and area during scale regeneration in the goldfish, Carassius auratus L. were quantified. Histological observations were then conducted to understand the mutual relationship between the quantitative and morphological processes of scale regeneration. The quantitative study revealed that regenerating scales grow most rapidly in area during the first 5 days of regeneration. The gradual decrease in the area growth rate coupled with the continuous linear weight growth over the period of 5–28 days suggests a shift in growth priority from area growth to the apposition, of the basal plate. Calcium and phosphorus deposition proceeded almost linearly during scale regeneration. Calcification of the bony layer preceded that of the basal plate and, after 14 days of regeneration, calcification of the basal plate started and gradually progressed. On day 28, recovery of calcium and phosphorus contents in the regenerating scales were approximatley 72% of ontogenetic scales, which is lower than the rates of area and weight regeneration (104 and 85%, respectively). Late initiation and slow progress of calcification in the basal plate is suggested to be responsible for the slow regeneration in calcium and phosphorus contents.
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Ohira, Y., Shimizu, M., Ura, K. et al. Scale regeneration and calcification in goldfish Carassius auratus: quantitative and morphological processes. Fish Sci 73, 46–54 (2007). https://doi.org/10.1111/j.1444-2906.2007.01300.x
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DOI: https://doi.org/10.1111/j.1444-2906.2007.01300.x