@article{452a51f6c00641599808ae78af14f596,
title = "Comparative growth, age at maturity and sex change, and longevity of hawaiian parrotfishes, with bomb radiocarbon validation",
abstract = "Growth rates and longevities were estimated for five major fishery species of parrotfishes (“uhu”) at Oahu, Hawai{\textquoteright}i. All species grew rapidly with von Bertalanffy growth formula k values ≥0.4·year−1. Longevities were found to range broadly among the three small species, 4 years in Calotomus carolinus and 6 and 11 years in Scarus psittacus and Chlorurus spilurus, and to 15–20 years in Scarus rubroviolaceus and Chlorurus perspicillatus for the two large species. Age reading and growth curves for the latter two large species were validated using bomb radiocarbon dating. Median ages at sexual maturity as females (AM50) and at sex change (from female to terminal phase male, AΔ50) were estimated using logistic models. Sexual maturation occurred at 1–2 years for the small species and at 3–3.5 years in the large species. AΔ50 estimates ranged from 2 to 4 years in the small species and were about 5 and 7 years in S. rubroviolaceus and C. perspicillatus, respectively. Estimated milestones poorly corresponded to the current minimum legal size for uhu in Hawai{\textquoteright}i (12 in. or 30.5 cm fork length). Pooling these parrotfishes for management seems generally inappropriate, especially for the two large species. Age-based metrics are more informative than size-based metrics for these fishes.",
author = "DeMartini, {Edward E.} and Andrews, {Allen H.} and Howard, {Kathrine G.} and Taylor, {Brett M.} and Lou, {Dong Chun} and Donovan, {Mary K.}",
note = "Funding Information: This study was supported in part by Bio-Sampling Initiative funding provided to E.E. DeMartini (E.E.D.) at the National Oceanic and Atmospheric Administration (NOAA) Pacific Islands Fisheries Science Center and in part to K.G. Howard (K.G.H.) by the Western Pacific Regional Fishery Management Council, the Sea-Grant College Program (NOAA) at the University of Hawai{\textquoteright}i, NSF grant DGE05-38550 to the University of Hawai{\textquoteright}i Ecology, Evolution and Conservation Biology group, and the University of Hawai{\textquoteright}i Graduate Student Organization. Parts of this study are based on a Ph.D. thesis (Zoology) by K.G.H. at the University of Hawai{\textquoteright}i. K.G.H. would like to thank her committee members, especially thesis advisor J. Parrish (deceased) and J.H. Choat. for their guidance. J. Claisse and numerous other graduate students and research assistants helped collect field and laboratory data. A.H. Andrews would like to thank K. Elder, A. McNichol, and A. Cruz of Woods Hole Oceanographic Institution – National Ocean Sciences Accelerator Mass Spectrometry Facility for processing the low mass otolith sample extractions under complicated conditions. Comments by R. Humphreys, C. Boggs, and two anonymous reviewers improved the manuscript. Publisher Copyright: {\textcopyright} 2018, Canadian Science Publishing. All rights reserved.",
year = "2018",
doi = "10.1139/cjfas-2016-0523",
language = "English (US)",
volume = "75",
pages = "580--589",
journal = "Canadian Journal of Fisheries and Aquatic Sciences",
issn = "0706-652X",
publisher = "National Research Council of Canada",
number = "4",
}