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- Title
Can amino acid racemization be utilized for fish age validation?
- Authors
Chamberlin, Derek W.; Shervette, Virginia R.; Kaufman, Darrell S.; Bright, Jordon E.; Patterson III, William F.
- Abstract
We investigated the relationship between aspartic acid d:l ratios and otolith-derived age estimates in Gulf of Mexico red snapper, Lutjanus campechanus (ages 1–26 years; R2 = 0.89) and Caribbean yellowtail snapper, Ocyurus chrysurus (ages 2–17 years; R2 = 0.84). The estimated racemization rate was 0.61 × 10−3 year−1 for red snapper and 1.28 × 10−3 year−1 for yellowtail snapper, reflecting temperature differences between study regions. Mean jackknifed error in ages predicted from aspartic acid d:l was 1.70 ± 0.39 years for red snapper and 1.57 ± 0.41 years for yellowtail snapper. Results suggest amino acid racemization may be an effective tool for direct age estimation and potentially age validation in fishes.
- Subjects
GULF of Mexico; OTOLITHS; RACEMIZATION; ASPARTIC acid; YELLOWTAIL; AGE; CRYSTALLINE lens
- Publication
Canadian Journal of Fisheries & Aquatic Sciences, 2023, Vol 80, Issue 3, p642
- ISSN
0706-652X
- Publication type
Article
- DOI
10.1139/cjfas-2022-0161