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- Title
Application of the bomb radiocarbon chronometer with eye lens core Δ<sup>14</sup>C for age validation in deepwater reef fishes.
- Authors
Patterson III, William F.; Chamberlin, Derek W.
- Abstract
Eye lens core Δ14C of Gulf of Mexico outer shelf and upper slope reef fishes matched a regional Δ14C reference time series, but otolith cores were depleted in 14C relative to the reference series. This is due to C in eye lens protein being derived from metabolic sources, with the ultimate source being epipelagic phytoplankton. In contrast, otolith C is derived mainly (70%–80%) from dissolved inorganic C, which is depleted in 14C beyond the epipelagic. Analyzing Δ14C in eye lens cores provides a novel approach for validating age estimates of deepwater (>200 m) fishes, which were unresolved in earlier applications of the bomb 14C chronometer.
- Subjects
GULF of Mexico; CRYSTALLINE lens; REEF fishes; CARBON isotopes; CHRONOMETERS; REEFS; TOURNAMENT fishing; FISH food
- Publication
Canadian Journal of Fisheries & Aquatic Sciences, 2023, Vol 80, Issue 6, p1047
- ISSN
0706-652X
- Publication type
Article
- DOI
10.1139/cjfas-2023-0003