Larval development and salinity tolerance of Japanese flounder (Paralichthys olivaceus) from hatching to juvenile settlement
文献类型: 外文期刊
作者: Wang, Youji 1 ; Guo, Qindan 1 ; Zhao, Hu 1 ; Liu, Haijin 2 ; Lu, Weiqun 1 ;
作者机构: 1.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China
2.Chinese Acad Fishery Sci, Res Ctr Fisheries Recourse & Environm, Beijing, Peoples R China
关键词: Paralichthys olivaceus;larval development;salinity tolerance;growth;survival
期刊名称:AQUACULTURE RESEARCH ( 影响因子:2.082; 五年影响因子:2.415 )
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收录情况: SCI
摘要: Salinity tolerance and growth of Japanese flounder Paralichthys olivaceus at different developmental stages were evaluated, including newly hatched larvae (nhl), yolk sac larvae (ysl), oil droplet larvae (odl), post oil droplet larvae (podl), premetamorphic larvae (preml) and prometamorphic larvae (proml), at 11 salinities from 5 to 55gL(-1) for 96h. The ontogenesis during the early life of P. olivaceus was investigated under hatchery salinity 35gL(-1). The results showed that suitable salinities for nhl, ysl, odl, podl, preml and proml larvae were 10 to 25gL(-1), 10 to 30gL(-1), 20 to 30gL(-1), 30gL(-1), 10 to 30gL(-1), 15gL(-1), respectively, demonstrating an ontogenetic variation of salinity tolerance. The salinity tolerance of nhl, ysl, preml was higher than that of odl, podl and proml. The ysl and preml larvae displayed wide salinity tolerances. The present findings demonstrate that the suitable salinity for larviculture of P. olivaceus is 20-25gL(-1) before the depletion of oil droplet; after that, higher salinity (30gL(-1)) should be ensured for the post-oil droplet larvae; the premetamorphic larvae can be cultured at a wide salinity range (10-30gL(-1)), and the metamorphosed larvae should be reared at salinity about 15gL(-1).
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