caa a22 4500 606227202 CHVBK 20210128101157.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10641-015-0398-0 doi (NATIONALLICENCE)springer-10.1007/s10641-015-0398-0 Age estimation and lead-radium dating of golden tilefish, Lopholatilus chamaeleonticeps [Elektronische Daten] [Linda Lombardi-Carlson, Allen Andrews] There is a growing concern over the lack of life history information for many deepwater fisheries species, including golden tilefish, Lopholatilus chamaeleonticeps. Fundamental life history characteristics, like age and growth, are required for effective, age-structured stock assessments and management decisions. A previous effort to validate golden tilefish age estimates using bomb radiocarbon dating was inconclusive, which led to an application of lead-radium dating in the current study. Lead-radium dating uses the radioactive disequilibrium of lead-210 (210Pb) and radium-226 (226Ra) in otoliths as an independent estimate of age. Ages were also estimated using traditional age estimates by counting growth zones in thin otolith sections and lead-radium dating was used to test these estimates. Radiometric ages (corrected for time since capture) were similar to age estimates from growth zone counts for two of the female age groups and the two oldest age groups of unknown sex, which confirmed an annual growth zone deposition. However, radiometric ages did not agree with age estimates from growth zone counts for males. The difference may be attributed to geographical variations in radium levels, growth rates and growth zone formation by gender or gender transition. Male sagittal otoliths revealed inconsistent growth zone patterns in thin sections, which may have contributed to underageing. Golden tilefish longevity was confirmed to 26years. Springer Science+Business Media Dordrecht (outside the USA), 2015 Age validation nationallicence Radiometric ageing nationallicence Lead-210 nationallicence Radium-226 nationallicence Malacanthidae nationallicence Great Northern tilefish nationallicence Lombardi-Carlson Linda Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, University of Florida, Gainesville, FL, USA aut Andrews Allen National Marine Fisheries Service, Pacific Islands Fisheries Science Center, 1845 Wasp Boulevard, Building 176, 96818, Honolulu, HI, USA aut Environmental Biology of Fishes Springer Netherlands 98/7(2015-07-01), 1787-1801 0378-1909 98:7<1787 2015 98 10641 https://doi.org/10.1007/s10641-015-0398-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10641-015-0398-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lombardi-Carlson Linda Fisheries and Aquatic Sciences Program, School of Forest Resources and Conservation, University of Florida, Gainesville, FL, USA aut NATIONALLICENCE 700 1- Andrews Allen National Marine Fisheries Service, Pacific Islands Fisheries Science Center, 1845 Wasp Boulevard, Building 176, 96818, Honolulu, HI, USA aut NATIONALLICENCE 773 0- Environmental Biology of Fishes Springer Netherlands 98/7(2015-07-01), 1787-1801 0378-1909 98:7<1787 2015 98 10641