热带海洋学报 ›› 2013, Vol. 32 ›› Issue (5): 93-98.doi: 10.11978/j.issn.1009-5470.2013.05.013cstr: 32234.14.j.issn.1009-5470.2013.05.013

• 海洋生物学 • 上一篇    下一篇

大亚湾浒苔分子鉴定及其对养殖废水中营养盐的吸收特性研究

江海英1, 2, 罗鹏1, 于宗赫1, 彭鹏飞3, 胡超群1   

  1. 1. 中国科学院南海海洋研究所热带海洋生物资源与生态重点实验室, 广东 广州 510301; 2. 中国科学院大学, 北京 100049; 3. 国家海洋局南海工程勘察中心, 广东 广州 510300
  • 收稿日期:2011-11-29 修回日期:2012-05-09 出版日期:2013-11-21 发布日期:2013-11-21
  • 作者简介:江海英(1987—), 女, 福建省漳州市人, 硕士研究生, 研究方向为海洋生物技术。E-mail: fjzzjianghy@163.com.
  • 基金资助:
    中国科学院知识创新工程重要方向项目(KZCXZ-EW-Q212)

Identification of Enteromorpha sp. from Daya Bay and its capacity of absorbing nutrients from aquaculture wastewater

JIANG Hai-ying1, 2, LUO Peng1, YU Zong-he1, PENG Peng-fei3, HU Chao-qun1   

  1. 1. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. South China Sea Marine Engineering Surveying Center, State Oceanic Administration, Guangzhou 510300, China
  • Received:2011-11-29 Revised:2012-05-09 Online:2013-11-21 Published:2013-11-21

摘要: 我国南北方海域均有浒苔 Enteromorpha sp. 分布,但是迄今为止,鲜有关于南方海域浒苔的深入研究。对从大亚湾虾池中采集的浒苔进行了基于18S rDNA序列的分子鉴定,并研究了该浒苔对养殖废水中营养盐的吸收特性。18S RNA基因扩增及测序后获得长1154bp的序列,序列比对及种系发生分析结果表明,大亚湾浒苔与Ulva intestinalis关系较近,与引起青岛“绿潮”的浒苔差异较大。对养殖废水中营养盐的吸收结果表明,利用该浒苔处理养殖废水的最优添加量为1.1g·L-1。在该添加量条件下,浒苔4h能去除养殖废水中65%的PO4-P、47%的NO2-N、91%的NO3-N、50%的NH4-N; 8h对PO4-P的去除率达72%,对NO2-N的去除率为81%,对NO3-N的去除率为100%,对NH4-N的去除率为74%。因此,利用浒苔处理养殖废水具有时间短、效率高的特点,可用于富营养化水体或养殖废水的处理。研究可为海水养殖业的可持续发展提供一定的科学依据。

关键词: 浒苔, 18S rDNA, 营养盐, 养殖废水, 生物修复

Abstract: The seaweed Enteromorphasp. distributes widely in the coastal areas of China. There are, however, few studies on Enteromorphain the South China Sea. In this study, we identified one Enteromorphasp. isolated from Daya Bay using molecular method based on 18S rDNA sequence, and analyzed its nutrient (PO4-P, NO2-N, NO3-N, and NH4-N) removal capacity in aquaculture wastewater. The 18S rRNA gene sequence of Enteromorphasp. was acquired with the length of 1154bp. Blast search and phylogenetic analysis showed that Enteromorphasp. from Daya Bay was closely related to Ulva intestinalisand had large genetic distance with the species that caused the green tide in Qingdao in 2008. The results of nutrient absorption experiment indicated that the optimal treatment dose of Enteromorphasp. for the wastewater was 1.1 g·L-1. Sixty-five percent of PO4-P, 47% of NO2-N, 91% of NO3-N, and 50% of NH4-N could be removed by the seaweed in four hours, and 72% of PO4-P, 81% of NO2-N, 100% of NO3-N, and 74% of NH4-N could be removed in eight hours. Therefore, it has advantage of high efficiency to use Enteromorphato treat aquaculture wastewater. Enteromorphacan be a candidate for treating eutrophic water or aquaculture wastewater. This study could provide a scientific reference for the treatment and utilization of farming wastewater.

Key words: Enteromorpha sp., 18S rDNA, nutrient, wastewater, bioremediation

中图分类号: 

  • P735