How Reliable are Growth Back-Calculations Based on Otoliths?

摘要: Growth back-calculations from otoliths assume that the relationship between fish and otolith length is linear through time. The final (or observed) individual fish-otolith ratios are then combined to prepare a regression for population, upon which subsequent based. However, recent studies have demonstrated fish:otolith size ratio varies systematically with somatic growth rate, resulting in relatively large slow-growing fish. Such effect will result fitted differs significantly of mean slopes. Fraser–Lee made such consistently underestimate previous lengths at age. bias may explain apparent ubiquity Lee's phenomenon. Back-calculation was eliminated use an algorithm defining trajectories biologically determined, rather than statistically estimated, intercep...