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Title: Can amino acid racemization be utilized for fish age validation?
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−1for red snapper and 1.28 × 10−3 year−1for 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.  more » « less
Award ID(s):
1855381
PAR ID:
10467929
Author(s) / Creator(s):
; ; ; ;
Publisher / Repository:
Canadian Science Publishing
Date Published:
Journal Name:
Canadian Journal of Fisheries and Aquatic Sciences
Volume:
80
Issue:
3
ISSN:
0706-652X
Page Range / eLocation ID:
642 to 647
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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