Striped bass, Morone saxatilis, larvae were reared in the laboratory for 97 days to validate the otolith increment aging technique for this species. Otolith-increment deposition rates were determined under optimal laboratory conditions for growth and under three conditions of restricted feeding and using both light and scanning electron microscopy (SEM). Under optimal laboratory conditions. increments were deposited daily from the fourth day after hatching through the first 2 months of life and were discernible with the light microscope. For larvae reared under restricted feeding regimes and readings done with the light microscope, counts did not reflect true age. Counts obtained from these same otoliths using SEM, however, more closely reflected true daily age. Results indicate that the use of light microscopy alone can result in inaccurate estimation of age for larvae that have experienced starvation episodes.
Original Publication Citation
Jones, C., & Brothers, E.B. (1987). Validation of the otolith increment aging technique for striped bass, Morone-saxatilis, larvae reared under suboptimal feeding conditions. Fishery Bulletin, 85(2), 171-178.
Jones, Cynthia and Brothers, Edward B., "Validation of the Otolith Increment Aging Technique for Striped Bass, Morone Saxatilis, Larvae Reared Under Suboptimal Feeding Conditions" (1987). OEAS Faculty Publications. 33.