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

在盐度30和水温20 ℃条件下,分别配制钙离子ρ(Ca2+)质量浓度为200 mg·L-1(A组)、400 mg·L-1(B组,对照)、800 mg·L-1(C组)、1 600 mg·L-1(D组)和3 000 mg·L-1(E组)的人工海水,研究了水体ρ(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(P〉0.05);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ρ(Ca2+)的增加而下降。不同ρ(Ca2+...

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Published in南方水产科学 Vol. 9; no. 3; pp. 31 - 38
Main Author 王茂林 张秀梅 高天翔 张沛东
Format Journal Article
LanguageChinese
Published 大连海洋大学农业部海洋水产增养殖学重点开放实验室,辽宁大连,116023%中国海洋大学海水养殖教育部重点实验室,山东青岛,266003 2013
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ISSN2095-0780
DOI10.3969/j.issn.2095-0780.2013.03.006

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Summary:在盐度30和水温20 ℃条件下,分别配制钙离子ρ(Ca2+)质量浓度为200 mg·L-1(A组)、400 mg·L-1(B组,对照)、800 mg·L-1(C组)、1 600 mg·L-1(D组)和3 000 mg·L-1(E组)的人工海水,研究了水体ρ(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(P〉0.05);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ρ(Ca2+)的增加而下降。不同ρ(Ca2+)对褐牙鲆幼鱼耳石长、宽、长宽比和耳石质量影响显著(P〈0.05)。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(P〈0.05)。其中w(Sr)随ρ(Ca2+)的增加显著下降,锶/钙(Sr/Ca)比、镁/钙(Mg/Ca)比随ρ(Ca2+)增加而下降。结果表明,水体ρ(Ca2+)对褐牙鲆鱼体成分、耳石形成及组分产生明显影响,ρ(Ca2+)能够影响鱼体和耳石元素的累积。
Bibliography: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 mg?L-1 (group A), 400 mg?L-1 (group B, control), 800 mg?L-1 (group C), 1 600 mg?L-1 (group D), and 3 000 mg?L-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+ concen
ISSN:2095-0780
DOI:10.3969/j.issn.2095-0780.2013.03.006