文献类型： 外文期刊
作者： Liu, Ming-Zhi 1 ; Jiang, Ri-jin 2 ; Zhang, Hui 5 ; Yang, Fan 1 ; Li, Xia-Fang 1 ; Feng, Guang-Peng 6 ; Yin, Rui 2 ; Chen, Feng 2 ;
作者机构： 1.Zhejiang Ocean Univ, Marine & Fisheries Res Inst, Zhoushan, Peoples R China
2.Zhejiang Marine Fisheries Res Inst, Zhoushan, Peoples R China
3.Minist Agr & Rural Affairs Peoples Republ China, Sci Observat & Expt Stn Fishery Resources Key Fish, Zhoushan, Peoples R China
4.Key Lab Sustainable Utilizat Technol Res Fishery R, Zhoushan, Peoples R China
5.Minist Agr, Key Lab East China Sea & Ocean Fishery Resource Ex, Shanghai, Peoples R China
6.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai, Peoples R China
关键词： Coilia nasus; otolith; strontium marking; enhancement and release; stock assessment
期刊名称：FRONTIERS IN MARINE SCIENCE （ 影响因子：5.247； 五年影响因子：5.72 ）
ISSN：
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Mass stock enhancement and release are excellent ways to recover Coilia nasus resources. However, it is challenging to evaluate stock enhancement effectively, and it is important to establish a method suitable for estimating C. nasus populations. We explored the effectiveness of marking otoliths in these fish with strontium by immersing C. nasus in hexahydrate strontium chloride solutions. We used laser ablation inductively coupled plasma mass spectrometry to measure the strontium content of otoliths and fish bodies. The larvae (40 d post hatch) were reared in five different concentrations of strontium (0, 12, 24, 48, and 60 mg/L) for 7 d, followed by treatment in non-additive water for 3 wk. The results showed that the cumulative mortality rate was not significantly different between treatment and control groups (P>0.05), except in the group treated with 24 mg/L strontium. The swimming and feeding behaviors did not change significantly, indicating that strontium did not negatively affect survival in this species. The strontium/calcium ratios of otoliths in the control group were stable (1.78-2.32 mmol/mol), whereas those of the experimental (marked) groups ranged widely (4.47-61.02 mmol/mol). The strontium/calcium ratios increased with increasing strontium concentration, but gradually returned to baseline values, resulting in a 100% success rate of marking with strontium. Following immersion in 12 mg/L strontium, strontium levels in the body returned to normal after 24 d. In summary, a treatment of 12 mg/L strontium for 4 d was identified as viable for marking. We confirmed the feasibility of strontium marking for the mass marking and release of C. nasus. This marking method does not affect the physiology of the fish and may provide a new approach for reasonable and scientific stock assessment of C. nasus post hatch.
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