Early development and growth of a selective line of Argopecten irradians concentricus

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 墨西哥湾扇贝选育系早期发育与生长 DOI: 作者: 作者单位: 广西大学 动物科学技术学院, 广西 南宁 530004 作者简介: 封杰(1991-),男,硕士研究生,主要从事海洋贝类遗传育种与繁育研究.E-mail:dzfjdyx@163.com 通讯作者: 中图分类号: S968 基金项目: 广西科学研究与技术开发计划项目（桂科攻14121006-2-5）. Early development and growth of a selective line of Argopecten irradians concentricus Author: Affiliation: College of Animal Science and Technology, Guangxi University, Nanning 530004, China Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:在水温28~29℃、盐度24~25条件下，研究墨西哥湾扇贝（）选育系的早期发育及幼虫和稚贝的生长。受精卵经50 min发育至卵裂，经22~24 h发育至D形幼虫，经11 d发育至眼点幼虫并出现足，进入附着变态阶段。选育系的胚胎发育时间和浮游幼虫前期壳长、壳高与对照系比较差异不显著（<0.05）。选育系的附着变态率和存活率与对照系比较均差异显著（<0.05），且优势明显。本研究表明，墨西哥湾扇贝浮游幼虫发育前期缓慢，幼虫后期、稚贝期生长迅速；壳长和壳高的生长速度不同步，幼虫前期壳长生长快于壳高，后期壳高生长快于壳长，并于第28~30天时壳高超过壳长。墨西哥湾扇贝选育系在幼虫和稚贝阶段生长速度明显快于对照系，具有明显的生长优势及生长潜力。 Abstract:Development of embryos, larvae, and juveniles of were observed using an optical microscope, with a digital camera at water temperatures of 28℃ to 29℃ and salinity of 24 to 25. Zygotes began the first cleavage at 50 min post-fertilization, developed to D-shaped larvae between 22 and 24 h, and the larvae developed eye points and feet at day 11 and entered the attachment metamorphosis stage. There was no significant difference in the time of embryo development between the selective and control lines (>0.05). The shell length and shell height were not significantly different at the embryonic and early larval stages between the selective and control lines (>0.05), but there was a significant difference in shell length and shell height at the post-larval and attachment metamorphosis stages between the selective and control lines (<0.05). The metamorphosis and survival rates of the selective line were significantly different from those of the control line (<0.05), and the selective line has obvious advantages. The results show that the growth of the early planktonic larval stage of was slow but at the post-larval and juvenile stages, it was rapid. The growth of shell length and shell height of was not synchronized. The growth speed of shell length exceeded that of shell height at the earlier larval stage, and at the later larval stage, the growth speed of shell height exceeded that of shell length; at 28 to 30 days, shell height exceeded shell length. At the larval and juvenile stages, the growth of the selective line significantly exceeded that of the control line. The selective line has obvious growth advantages and growth potential. 参考文献 相似文献 引证文献