Age Estimate Precision of Bluegill and Redear Sunfish Using Broken and Whole Otoliths
SEAFWA Journal Volume 7, March 2020
Age estimate precision is essential for fisheries managers when evaluating age structure, growth, and mortality rates for fish populations; therefore, establishing the method with the greatest precision for a particular species is critical. We compared ages estimated from broken and whole otoliths of 693 bluegill (Lepomis macrochirus) and 432 redear sunfish (L. microlophus) from five small impoundments (6.5?101 ha) in Oklahoma. Bluegill ages ranged from 0 to 10, and redear sunfish ranged from 0 to 9. We observed high agreement and precision between readers for ages estimated using broken...