| 利用贝壳颜色标记分析皱纹盘鲍苗种繁育中的无意识选择 |
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| 引用本文： | 李加琦,刘 晓.利用贝壳颜色标记分析皱纹盘鲍苗种繁育中的无意识选择[J].海洋科学,2011,35(10):22-26. |
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| 作者姓名： | 李加琦 刘 晓 |
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| 作者单位： | 中国科学院海洋研究所；中国科学院研究生院;中国科学院海洋研究所 |
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| 基金项目： | 国家863 计划(2006AA10A407)、江苏省科技支撑计划(BE2010320) |
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| 摘 要： | 利用皱纹盘跑（Haliotis discus hannai）贝壳颜色与摄食饵料相关且贝壳生成后色调不再改变等特点，以幼鲍贝壳顶部摄食底栖硅藻期间形成的褐红色部位的壳长指示它剥离时的壳长，将贝壳颜色用作形态标记，首次在皱纹盘鲍苗种繁育中观察到无意识选择。在投喂人工配合饵料后的第3天与第30天，分别从遗传背景不同的8组样本...
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| 关 键 词： | 皱纹盘鲍(Haliotis discus hannai) 育种 无意识选择 贝壳颜色 |
| 收稿时间： | 2011/5/16 0:00:00 |
| 修稿时间： | 2011/6/20 0:00:00 |
Unintentional selection during seed culture in the Pacific abalone, Haliotis discus hannai Ino |
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| Abstract: | Selective breeding is one kind of artificial selection which is carried out intentionally. There also exists unintentional process during intentional selective breeding. The aim of this study was to determine if there existed unintentional selection on Original Shell Length (OSL, as indicated by brown shell color) during subsequent seed culture in the Pacific abalone (Haliotis discus hannai Ino). As the Pacific abalone juveniles produce brown shells during their early stage when they feed on benthic diatom right after metamorphism but their shell color changes to green when fed with artificial diets during subsequent seed culture stage, we compared the average OSL on the 3rd (the beginning shell length, BSL) and 30th (the final shell length, FSL) day after feeding with the artificial diets. In 7 out of 8 groups of Pacific abalone with identical genetic origin, the average FSL was significantly larger than average BSL. Meanwhile, the standard deviation and range of the FSL were smaller than those of the corresponding BSL in six groups. The coefficients of variation of all the eight groups of FSL were smaller than those of BSL. Obviously, more juveniles with small OSL were unintentionally lost during the seed culture stage. |
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| Keywords: | Haliotis discus hannai breeding unintentional selection shell color morphological marker |
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