王茂林, 张秀梅, 高天翔, 张沛东. 水体钙离子质量浓度对褐牙鲆幼鱼鱼体和耳石元素成分的影响[J]. 南方水产科学, 2013, 9(3): 31-38. DOI: 10.3969/j.issn.2095-0780.2013.03.006
引用本文: 王茂林, 张秀梅, 高天翔, 张沛东. 水体钙离子质量浓度对褐牙鲆幼鱼鱼体和耳石元素成分的影响[J]. 南方水产科学, 2013, 9(3): 31-38. DOI: 10.3969/j.issn.2095-0780.2013.03.006
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WANG Maolin, ZHANG Xiumei, GAO Tianxiang, ZHANG Peidong. Effects on Ca2+ concentrations in seawater on element content of fish body and otolith of juvenile Paralichthys olivaceus[J]. South China Fisheries Science, 2013, 9(3): 31-38. DOI: 10.3969/j.issn.2095-0780.2013.03.006
Citation: WANG Maolin, ZHANG Xiumei, GAO Tianxiang, ZHANG Peidong. Effects on Ca2+ concentrations in seawater on element content of fish body and otolith of juvenile Paralichthys olivaceus[J]. South China Fisheries Science, 2013, 9(3): 31-38. DOI: 10.3969/j.issn.2095-0780.2013.03.006
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水体钙离子质量浓度对褐牙鲆幼鱼鱼体和耳石元素成分的影响

Effects on Ca2+ concentrations in seawater on element content of fish body and otolith of juvenile Paralichthys olivaceus

    摘要
  • 摘要: 在盐度30和水温20 ℃条件下，分别配制钙离子(Ca2+)质量浓度为200 mgL-1（A组）、400 mgL-1（B组，对照）、800 mgL-1（C组）、1 600 mgL-1（D组）和3 000 mgL-1（E组）的人工海水，研究了水体(Ca2+)对褐牙鲆（Paralichthys olivaceus）幼鱼鱼体和耳石元素成分的影响。经60 d养殖发现褐牙鲆鱼体中仅钙（Ca）、锌（Zn）和铜（Cu）质量分数差异不显著（P0.05）；鱼体中磷（P）、钠（Na）、镁（Mg）、锶（Sr）、铁（Fe）、锰（Mn）和镍（Ni）质量分数随水体(Ca2+)的增加而下降。不同(Ca2+)对褐牙鲆幼鱼耳石长、宽、长宽比和耳石质量影响显著（P0.05）。低浓度A组耳石长和耳石宽显著低于B组和C组，A组耳石长宽比（L/W）显著低于D组，A组的耳石质量显著低于B组和D组（P0.05）。其中w(Sr)随(Ca2+)的增加显著下降，锶/钙（Sr/Ca）比、镁/钙（Mg/Ca）比随(Ca2+)增加而下降。结果表明，水体(Ca2+)对褐牙鲆鱼体成分、耳石形成及组分产生明显影响，(Ca2+)能够影响鱼体和耳石元素的累积。

     

    Abstract: We investigated the effects of Ca2+ concentrations on element content of fish body and otolith of juvenile Paralichthys olivaceus that were raised at 20℃ in artificial seawater for 60 more days. Five groups of seawater with Ca2+ concentrations 200 mgL-1 (group A), 400 mgL-1 (group B, control), 800 mgL-1 (group C), 1 600 mgL-1 (group D), and 3 000 mgL-1 (group E), were used for raise. It was found that with the increase of Ca2+ concentration, the contents of P, Na, Mg, Sr, Fe, Mn and Ni in fish body decreased, and that Ca2+ concentrations significantly influenced the otolith length, width, L/W and weight. Specifically, otolith length and width of juvenile P.olivaceus group A were significantly lower than that of group B and C; L/W was significantly lower than that of group D; and otolith weight was significantly lower than that of group B and D. Sr content of otolith, significantly, and the ratio of Sr/Ca and Mg/Ca also decreased with increasing concentration of Ca2+. The results indicate that Ca2+ concentrations affect juvenile P.olivaceus significantly in terms of its body and otolith element content formation, composition and accumulation

     

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