马氏珠母贝黑壳色选育系F5和对照群体生产性状的比较
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陈琨(1995-),男,硕士,实习研究员,研究方向为海洋生物学.E-mail:chenkun@mangrove.org.cn

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S968

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国家贝类产业技术体系项目(CARS-49); 广东省普通高校重点领域专项(2020ZDZX1045); 广东省现代农业产业技术体系贝藻类产业创新团队项目(KJ146)


Comparison of production traits between the black shell color breeding line F5 and the control population of Pinctada fucata martensii
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    摘要:

    以贝壳棱柱层放射肋条纹颜色与生长性状为育种目标, 结合家系选择与群体选择培育了马氏珠母贝 (Pinctada fucata martensii)黑色放射肋选育品系(简称黑壳色系, black shell color line, BF)。为了探究黑壳色系的生产性能, 本研究比较了选育系 F5 (BF5)和对照群体(control group, CG)在不同生长阶段的多项生产性能指标, 包括受精率、孵化率、变态率、生长性状、对低温和高盐的耐受性以及育珠性能。结果显示 BF5 群体的受精率、孵化率、 幼虫第 10 天和第 20 天的存活率以及变态率均大于 CG 群体, 差异不显著(P>0.05); 在 20 日龄以后, BF5 群体的平均壳长均显著大于 CG 群体(P<0.05), 其中 BF5 群体 240 日龄、330 日龄和 600 日龄的平均壳长分别比 CG 群体提高了 17.47%、21.34%和 20.28%。33 ℃高温胁迫 30 d 后, BF5 和 CG 群体的存活率分别为 84.4%和 63.9%, 差异显著(P<0.05); 16‰低盐胁迫 30 d 后, BF5 和 CG 群体的存活率分别为 69.2%和 56.7%, 群体间差异显著(P<0.05)。植核后 150 d 至育珠期结束(270 d), BF5 的存活率显著高于 CG 群体(P<0.05), BF5 最终存活率比 CG 提高了 18.92%; BF5 和 CG 的商品珠率和优质珠率差异不显著(P>0.05); BF5 的留核率、珍珠层厚度显著高于 CG (P<0.05), 提高率分别达到 18.97%和 22.61%, 表明 BF5 具有更好的育珠性能。本研究表明, BF5 具有更好的生长、抗逆和育珠性能, 为马氏珠母贝育种和产业应用提供了基础数据。

    Abstract:

    We developed a black shell color line (BF) based on the color of radiating ribbed stripes in shell prismatic layers and growth characteristics by employing family selection and population selection methods. We aimed to explore the production performance of the selected lines by comparing the performance indicators of the black shell color line F5 (BF5) and the control group (CG), including fertilization rate, hatching rate, metamorphosis rate, growth traits, tolerance to low temperature and high salt content, and pearl production traits. The fertilization, hatching, and survival rates on the 10th and 20th day of larvae and the metamorphosis rate of the BF5 population were higher than those of the CG population, but the difference was not significant (P>0.05). Following 20 days post hatching, the average shell length of BF5 group was significantly higher than that of the CG group (P<0.05), and the average shell length of the BF5 group was 17.47%, 21.34%, and 20.28% higher than that of CG group at 240, 330, and 600 days after hatching, respectively. Following 30 days of exposure to the heat stress caused at 33 ℃, the survival rate of BF5 and CG groups was 84.4% and 63.9%, respectively, and this difference was significant (P<0.05). Following 30 days of exposure to 16‰ low salt stress, the survival rate of BF5 and CG groups was 69.2% and 56.7%, respectively, with significant differences being observed between the two groups (P<0.05). From 150 days after nuclear implantation to the end of the beading period (270 days), the survival rate of BF5 was significantly higher than that of the CG population (P<0.05). The survival rate of BF5 was 18.92% higher than that of CG. There was no significant difference between the commercial bead rate and the high-quality bead rate of BF5 and CG (P>0.05). The nucleation retention rate and nacre thickness of BF5 were significantly higher than CG (P<0.05), and the increase rates were 18.97% and 22.61%, respectively. Our results indicated that BF5 had better pearl production traits. The findings of this study provide basic data for breeding and industrial application of Pinctada fucata martensii.

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引用本文

陈琨,张林浩,姚子航,廖永山,邓岳文,王庆恒.马氏珠母贝黑壳色选育系F5和对照群体生产性状的比较[J].中国水产科学,2023,30(11):1293-1300
CHEN Kun, ZHANG Linhao, YAO Zihang, LIAO Yongshan, DENG Yuewen, WANG Qingheng. Comparison of production traits between the black shell color breeding line F5 and the control population of Pinctada fucata martensii[J]. Journal of Fishery Sciences of China,2023,30(11):1293-1300

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  • 收稿日期:2023-10-10
  • 最后修改日期:2023-11-19
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  • 在线发布日期: 2024-03-14
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