不同盐度对鱼幼鱼生长和应激生理的影响

IF 2.2 3区农林科学 Q2 FISHERIES

Aquaculture International Pub Date : 2025-05-16 DOI:10.1007/s10499-025-02030-8

Thor M. Jonassen, Albert K. D. Imsland

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引用次数: 0

摘要

研究了在三种不同盐度（15、20和36 ppt）下饲养28天的块鱼幼鱼（平均初始体重（g，±SEM）为27.1±1.1-28.0±1.3）的初级应激反应、渗透调节和生长情况。热生长系数（TGC）在4.0±0.12 (15 ppt) ~ 4.2±0.06 （36 ppt）之间，3个盐度组间差异不显著。血浆离子浓度（Na+, K+， Cl−和Ca2+）不受盐度影响，并且在测试范围内没有提供渗透胁迫的证据。血浆皮质醇水平在实验开始和结束时相似，与之前报道的未受干扰的肿块鱼的值相似或明显更低。总体而言，目前的研究结果表明，在测试范围内，幼鱼对低盐度的耐受性良好，该范围包括在鲑鱼养殖中使用大块鱼来控制寄生虫的养殖场所遇到的条件。

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Effect of different salinities on growth and stress physiology in juvenile lumpfish

Primary stress response, osmoregulation, and growth were investigated in juvenile lumpfish (mean initial weight (g, ± SEM) was 27.1 ± 1.1—28.0 ± 1.3) reared at three different salinities (15, 20, and 36 ppt) for 28 days. Thermal growth coefficient (TGC) was between 4.0 ± 0.12 (15 ppt) and 4.2 ± 0.06 (36 ppt) and did not vary significantly between the three salinity groups. Plasma ions concentrations (Na⁺, K⁺, Cl⁻, and Ca²⁺) were unaffected by salinity and did not provide evidence of osmotic stress in the tested range. Plasma cortisol levels were similar at the beginning and end of the experiments and were similar to, or significantly lower, than values previously reported on undisturbed lumpfish. Overall, present findings indicate that juvenile lumpfish tolerate well low salinity within the tested range which encompasses conditions encountered in rearing sites where lumpfish are used to control parasites in salmon aquaculture.

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来源期刊

Aquaculture International 农林科学-渔业

CiteScore

5.10

自引率

6.90%

发文量

204

审稿时长

1.0 months

期刊介绍： Aquaculture International is an international journal publishing original research papers, short communications, technical notes and review papers on all aspects of aquaculture. The Journal covers topics such as the biology, physiology, pathology and genetics of cultured fish, crustaceans, molluscs and plants, especially new species; water quality of supply systems, fluctuations in water quality within farms and the environmental impacts of aquacultural operations; nutrition, feeding and stocking practices, especially as they affect the health and growth rates of cultured species; sustainable production techniques; bioengineering studies on the design and management of offshore and land-based systems; the improvement of quality and marketing of farmed products; sociological and societal impacts of aquaculture, and more. This is the official Journal of the European Aquaculture Society.