Application of enriched 137Ba tracer to mark juvenile Persian sturgeon (Acipenser persicus)
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- 作者：Hadis Mirali ; Ali Bani ; Javad Fasihi
- 关键词：Persian sturgeon ; Pectoral fin spine ; Fish marking ; 137Ba ; ICP ; MS
- 刊名：Environmental Biology of Fishes
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：100
- 期：2
- 页码：163-169
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Freshwater & Marine Ecology; Zoology; Animal Systematics/Taxonomy/ Biogeography; Environment, general; Nature Conservation;
- 出版者：Springer Netherlands
- ISSN：1573-5133
- 卷排序：100
文摘
The present study evaluates the variations of 137Ba abundance in pectoral fin spine of 1-month-old juvenile Persian sturgeon (Acipenser persicus) upon marking using the stable isotope approach. The marking of the fish was achieved by incorporation of 137Ba2+ in the calcified lattice of the pectoral fin spine through substitution with structural Ca2+. This process was carried out by rearing juveniles in treatment tanks containing elevated concentrations of 137Ba for 1, 3 and 5 days. The marked fish were then retained in natural abundance fresh and brackish waters, to evaluate the trend of exchange of 137Ba from the fin spines. The abundance of 137Ba in fin spines during marking and post-marking experiments were detected by inductively coupled plasma mass spectrometry (ICP-MS). The results showed that a significant isotope mark can be obtained with no mortality and 100% marking rate on the first day of exposure to the isotope. The marked juveniles maintained their isotopic signature for at least 25 days. Statistical analysis of the obtained 138Ba/137Ba ratios demonstrated that the successful incorporation of 137Ba2+ in pectoral fin spines provides an effective marking method for Persian sturgeon restocking programs.