Inter-Otolith Differences in Strontium Markings: A Case Study on the Juvenile Crucian Carp Carassius carassius (Linnaeus, 1758)

Zhu, Yahua; Jiang, Tao; Chen, Xiubao; Liu, Hongbo; Phelps, Quinton E.; Yang, Jian

doi:10.3390/fishes7030112

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…The egg hatchability and hatching time were correlated with Sr, but Sr 2+ did not affect the survival and growth of Fathehead minnows [31]. Sr 2+ would not cause harm to juvenile crucian carp on strontium marking [32]. Not only that, strontium can even enhance bone strength by promoting the formation of bone cells to promote the growth of organisms [33].…”

Section: Survival and Growth In Different Strontium Concentrationsmentioning

confidence: 99%

Evaluation of the Effectiveness of Marking Juvenile Takifugu obscurus Otoliths with Strontium

Zhang

Feng

et al. 2022

Fishes

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Strontium marking technology is commonly used for extensive marking in stock enhancement and releasing activities. In order to explore the feasibility of this technology for juvenile Takifugu obscurus, five different concentrations of strontium (0, 12, 18, 36, and 72 mg/L) were set up by strontium chloride hexahydrate (SrCl2·6H2O) and T. obscurus were immersed for 7 days. Then, T. obscurus were reared in non-additive water for 25 days. The results showed that the survival rate of all groups was 100%, except the 72 mg/L group, after 7 days of immersion. Moreover, the growths of all the marked groups were better than that of the control group. There was no significant difference between the control and marked groups, except for the 18 mg/L group, indicating that the appropriate concentration of strontium might have positive effect for T. obscurus. The strontium to calcium (Sr/Ca) ratios of otoliths in the marked groups increased with increasing concentration and time, which were higher than the baseline, respectively. Then, the Sr/Ca ratios returned to the original level, but the peak value was still retained, suggesting that the success rate of the strontium marking reached 100%. Notably, the residual strontium content of 18 mg/L group was insufficient for causing negative effects for T. obscurus after 25 days. Therefore, in consideration of the growth, survival, and effect of strontium marking on otolith, 18 mg/L is an appropriate concentration for strontium marking of juvenile T. obscurus. This study confirmed the feasibility of strontium marking for T. obscurus and provided a new approach to rationally and scientifically evaluate the stock enhancement and releasing efficiency of T. obscurus.

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Section: Survival and Growth In Different Strontium Concentrationsmentioning

confidence: 99%

Evaluation of the Effectiveness of Marking Juvenile Takifugu obscurus Otoliths with Strontium

Zhang

Feng

et al. 2022

Fishes

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Visualization of strontium marking in dorsal fin rays of Megalobrama amblycephala for fish stocking

Jiang,

Zhu,

Liu

et al. 2024

J. Ocean. Limnol.

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Analyses of fin ray types to detect strontium markers in juvenile blunt-snout bream Megalobrama amblycephala

Zhu,

Jiang,

Chen

et al. 2024

Ecol Process

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Background Restocking by introducing hatchery-reared fish into wild habitats aids in the restoration of fishery aquatic ecosystems and reefs to increase the abundance of fish resources, restore the ecological balance of water bodies, and enhance ecosystem functioning. Accurately, rapidly, and effectively evaluating the success of restocking using chemical markers (e.g., strontium [Sr]) remains challenging for fisheries management. Consequently, for non-lethal fish sampling, hard tissues, such as fin rays, have received increasing attention as a target for marking method. However, data on the differences in marking different types of fin rays remain limited. Therefore, we exposed juvenile blunt snout bream individuals (Megalobrama amblycephala) to 0 (control group) or 800 mg/L of SrCl2·6H2O (marked group) for 5 days and transferred them into normal aerated water for post-immersion culture. We sampled their pectoral, dorsal, ventral, anal, and caudal fin rays. The Sr marks among the fin types were sampled at 0 and 20 days post-immersion and evaluated using an electron probe micro-analyzer (EPMA) for the five-day Sr/Ca ratios, along with line transect and Sr mapping analyses. Results Sr marking signatures were observed in all fin types in the marked group, with a success rate of up to 100%. Although marking efficiency varied among the different fin ray types, the highest Sr/Ca ratios were most often detected in the dorsal fin. Cross-sectional Sr concentration maps of all fin rays sampled showed high-Sr domains in the marked group; in contrast, the entire cross-sections of the control group displayed low Sr contents, indicating successful marking efficiency. Conclusions Fin ray Sr marking is a successful method for juvenile M. amblycephala, with the advantages of non-lethality and negligible sampling injuries, facilitating the rapid and effective evaluation of Sr marking in restocking M. amblycephala.

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Inter-Otolith Differences in Strontium Markings: A Case Study on the Juvenile Crucian Carp Carassius carassius (Linnaeus, 1758)

Cited by 4 publications

References 46 publications

Evaluation of the Effectiveness of Marking Juvenile Takifugu obscurus Otoliths with Strontium

Evaluation of the Effectiveness of Marking Juvenile Takifugu obscurus Otoliths with Strontium

Visualization of strontium marking in dorsal fin rays of Megalobrama amblycephala for fish stocking

Analyses of fin ray types to detect strontium markers in juvenile blunt-snout bream Megalobrama amblycephala

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