生物学杂志

生物学杂志

• 研究报告 • 上一篇    下一篇

海水盐度对美洲帘蛤稚贝生长和存活率的影响

  

  1. 1. 宁波大学 海洋学院, 宁波 315211; 2. 福建省宝智水产科技有限公司, 漳州 363503
  • 出版日期:2016-10-18 发布日期:2016-10-18
  • 通讯作者: 徐继林，研究员，博士生导师，从事贝类生物学研究，E-mail：xujilin@nbu.edu.cn
  • 作者简介:周海波，助理工程师，从事滩涂贝类人工育苗的相关研究与工作，E-mail：nh10705@126.com
  • 基金资助:
    科技部国家星火计划重点项目（2014GA720002）；宁波大学水产浙江省重中之重一级学科开放基金项目（xkzsc1416）

Effects of salinity on the growth and survival rates of juvenile Mercenaria mercenaria (Linnaeus, 1758)

  1. 1. School of Marine Sciences, Ningbo University, Ningbo 315211;
    2. Baozhi Aquatic Science and Technology Co. LTD., Zhangzhou 363503, China
  • Online:2016-10-18 Published:2016-10-18

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摘要： 模拟贝类人工育苗过程中的培养方法，研究了海水盐度对两种不同规格美洲帘蛤稚贝生长与成活的影响。结果表明，两种不同规格美洲帘蛤稚贝最适生长及成活的海水盐度都为27.8，盐度低于14.4时稚贝在48 h内出现不同程度的死亡，盐度为14.4~27.8时，稚贝成活率与生长率随盐度升高而增长，盐度为27.8~35.9时，其成活率和生长率随盐度升高而降低。较大规格美洲帘蛤稚贝对海水盐度变化的耐受能力要比较小规格的强，我国南方沿海地区更适合美洲帘蛤稚贝的人工育苗生产而北方更适合成贝的养殖。

关键词: 美洲帘蛤, 稚贝, 海水盐度, 生长, 存活

Abstract: The effects of salinity on the growth and survival of juvenile Mercenaria mercenaria of two different sizes were studied by employing indoor culture method. The results showed that the most suitable growth and survival salinity was about 27.8 for juveniles of two different sizes. Juveniles would die within 48 h when the salinity was lower than 14.4. The survival rate (SR) and growth rate (GR) of juveniles increased along with the salinity from 14.4 to 27.8, but decreased when the salinity increased from 27.8 to 35.9. There was stronger resistance to salinity for the juvenile M. mercenaria of larger sizes when compared with the smaller ones. In conclusion, artificial culture of the juvenile M. mercenaria is more suitable in the south coast of China, and adult culture is more suitable in the north coast areas.

Key words: Mercenaria mercenaria, juvenile, salinity, growth, survival