TY - JOUR T1 - Growth and longevity of Hawaiian grouper (Hyporthodus quernus) ā€” input for management and conservation of a large, slow-growing grouper JF - Canadian Journal of Fisheries and Aquatic Sciences Y1 - 2019 A1 - Andrews, Allen H. A1 - DeMartini, Edward E. A1 - Brodziak, Jon A1 - Nichols, Ryan S. A1 - Humphreys, Robert L. AB - Hawaiian grouper (Hyporthodus quernus) is endemic to the Hawaiian Islands and is regionally important, yet little is known about its life history. This large species is managed within the Deep 7 bottom fish complex, which includes six snapper species that are assumed to have similar life history traits. Previous age estimates were not validated and suggested a maximum age of 34 years. To evaluate the preliminary study and provide a valid basis for life history parameters, we aged otoliths using bomb radiocarbon (14C) dating. Measured 14C values provided ages for smallest to largest fish that differed from the original study. The fundamental information provided here when evaluating Hawaiian grouper conservation status is longevity (valid to 50 years and estimated to 76 years) ā€” no male sampled was <80 cm total length (TL) and younger than 34 years ā€” and age-at-sexual maturity and age-at-sex change, which were indirectly estimated and compared with prior published estimates for this and other groupers. Updated life history parameters (k = 0.078, Lāˆž = 95.8 cm TL) should be used to improve future management and conservation assessments. VL - 76 UR - https://www.nrcresearchpress.com/doi/full/10.1139/cjfas-2018-0170 IS - 10 ER -