Effects of Lanthanum-Amino Acid Complexes on Egg Hatching and Nauplius Metamorphosis of Penaeus chinensis |
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作者单位: | Yellow Sea Fisheries Research Institute, CAFS, Qingdao 266071
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摘 要: | Studies have been carried out on the effect of lanthanum-amino acid complexes on embryo development and nauplius growth ofPenaeus chinensis. The experimental results indicate that: (1)The optimum concentrations of lanthanum-proline and Lanthanumphenylalanine for the development of eggs in monocell and dicell stages are 1.50~ 4.00mg/L and 0.50~3.00 mg/L, respectively, the egg hatching rates being raised by 21.0 ~ 46.0% and 23.0 ~42.8% ( P < 0.05 ) respectively. (2)The optimum concentrations of lanthanum- proline complex and Lanthanum-phenylalanine complex for the growth ofnauplii are 1.50~4.00 mg/L and 0.50~3.00 mg/L, the metamorphosis rate from nauplius to protozoea being raised by 16.4 ~27.5% and 20.4~26.7% (P < 0.05 ) respectively. (3)The positive effect of lanthanum-amino acid complexes on egg hatching and nauplius metamorphosis of Penaeus chinensis is better than that of lanthanum. With regard to the positive effect, lanthanum-proline complex is better than Lanthanum-phenylalanine complex.
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关 键 词: | 复合镧氨基酸 稀土元素 孵化 对虾属 无节幼体 Penaeus chinensis |
Effects of Lanthanum-Amino Acid Complexes on Egg Hatching and Nauplius Metamorphosis of Penaeus chinensis |
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Authors: | Xin Fuyan Qu Keming |
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Abstract: | Studies have been carried out on the effect of lanthanum-amino acid complexes on embryo development and nauplius growth ofPenaeus chinensis. The experimental results indicate that: (1)The optimum concentrations of lanthanum-proline and Lanthanumphenylalanine for the development of eggs in monocell and dicell stages are 1.50~ 4.00mg/L and 0.50~3.00 mg/L, respectively, the egg hatching rates being raised by 21.0 ~ 46.0% and 23.0 ~42.8% ( P < 0.05 ) respectively. (2)The optimum concentrations of lanthanum- proline complex and Lanthanum-phenylalanine complex for the growth ofnauplii are 1.50~4.00 mg/L and 0.50~3.00 mg/L, the metamorphosis rate from nauplius to protozoea being raised by 16.4 ~27.5% and 20.4~26.7% (P < 0.05 ) respectively. (3)The positive effect of lanthanum-amino acid complexes on egg hatching and nauplius metamorphosis of Penaeus chinensis is better than that of lanthanum. With regard to the positive effect, lanthanum-proline complex is better than Lanthanum-phenylalanine complex. |
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Keywords: | Lanthanum-amino acid complex Penaeus chinensis Egg hatching Nauplii |
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