Can amino acid racemization be utilized for fish age validation?
Can amino acid racemization be utilized for fish age validation?
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DOI：
10.1139/cjfas-2022-0161
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发表时间：
2023-02-01
影响因子：
2.4
通讯作者：
Patterson III, William F.
中科院分区：
文献类型：
--
作者：
Chamberlin, Derek W.;Shervette, Virginia R.;Patterson III, William F.
我们研究了墨西哥湾红鲷鱼 Lutjanus Campechanus（年龄 1-26 岁；R2 = 0.89）和加勒比黄尾鲷鱼 Ocyurus chrysurus（年龄 2-17 岁；R2 = 0.84）的天冬氨酸 D:l 比率与耳石推算的年龄之间的关系。红鲷鱼的估计外消旋率为 0.61 x 10-3year-1，黄尾鲷鱼的外消旋率为 1.28 x 10-3year-1，反映了研究区域之间的温度差异。根据天冬氨酸 D:1 预测的年龄的平均折叠误差对于红鲷鱼为 1.70 ± 0.39 年，对于黄尾鲷鱼为 1.57 ± 0.41 年。结果表明，氨基酸外消旋化可能是鱼类直接年龄估计和潜在年龄验证的有效工具。
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 x 10-3 year-1 for red snapper and 1.28 x 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.