@article {2683,
	title = {Age validation of yellowfin (Thunnus albacares) and bigeye (Thunnus obesus) tuna of the northwestern Atlantic Ocean},
	journal = {Canadian Journal of Fisheries and Aquatic Sciences},
	volume = {77},
	year = {2020},
	month = {Jan-04-2020},
	pages = {637 - 643},
	abstract = {The age and growth of yellowfin (Thunnus albacares) and bigeye (T. obesus) tuna remain problematic because validation of growth zone deposition (opaque and transparent) hasn{\textquoteright}t been properly evaluated. Otolith growth structure (zone clarity) can be poorly defined for tropical tunas but the use of bomb radiocarbon dating has validated age estimates to 16{\textendash}18 years for yellowfin and bigeye tuna. Use of the radiocarbon decline period {\textemdash} defined by regional coral and otoliths {\textemdash} provided valid ages through ontogeny. Yellowfin tuna aged 2{\textendash}18 years (n = 34, 1029{\textendash}1810 mm FL) and bigeye tuna aged 3{\textendash}17 years (n = 12, 1280{\textendash}1750 mm FL) led to birthyears that were coincident with the bomb radiocarbon decline. The results indicate there was no age reading bias for yellowfin tuna and that age estimates of previous studies were likely underestimated for both species.},
	issn = {0706-652X},
	doi = {10.1139/cjfas-2019-0328},
	url = {https://www.nrcresearchpress.com/doi/full/10.1139/cjfas-2019-0328},
	author = {Andrews, Allen H. and Pacicco, Ashley and Allman, Robert and Falterman, Brett J. and Lang, Erik T. and Golet, Walter}
}
@article {2611,
	title = {Linear decline in red snapper (Lutjanus campechanus) otolith Δ14C extends the utility of the bomb radiocarbon chronometer for fish age validation in the Northern Gulf of Mexico},
	journal = {ICES Journal of Marine Science},
	volume = {8870697346588911255202655996472975862129455810210311781289189114143320657330766513996026526319911984699},
	year = {2018},
	month = {Mar-05-2018},
	abstract = {Radiocarbon (D14C) was analyzed in northern Gulf of Mexico (nGOM) red snapper (Lutjanus campechanus) otolith cores (n{\textonequarter}23), otolith
edge samples (n{\textonequarter}12), and whole age-0 otoliths (n{\textonequarter}9), with edge samples and whole age-0 otoliths constituting known-age samples.
There was no significant difference in the linear relationship of D14C versus year of formation between regional corals and known-age otolith
samples, and a linear regression fit to the combined data from 1980 to 2015 extends the utility of the bomb radiocarbon chronometer
for age validation. The entire regional coral and known-age otolith data set (1940 to 2015) was then utilized as a reference series to validate
otolith-derived red snapper age estimates for cored otolith samples. A loess regression was fit to the reference data and then the sum
of squared residuals (SSR) was computed from predicted versus observed birth years for cored adult otolith samples. This process was
then repeated for ages biased 61{\textendash}4 years. Ages with no bias applied had the lowest SSR, thus validating red snapper age estimates and
demonstrating the utility of the combined regional coral and known-age red snapper otolith D14C time series for age validation of nGOM
marine fishes.},
	keywords = {Age validation, otoliths, radiocarbon, red snapper},
	issn = {1054-3139},
	doi = {10.1093/icesjms/fsy043},
	url = {https://academic.oup.com/icesjms/advance-article/doi/10.1093/icesjms/fsy043/4992258http://academic.oup.com/icesjms/advance-article-pdf/doi/10.1093/icesjms/fsy043/24775644/fsy043.pdf},
	author = {Barnett, Beverly K and Thornton, Laura and Allman, Robert and Chanton, Jeffrey P and Patterson, William F}
}
