盐度对不同温度下海月水母螅状体存活和无性繁殖的影响

doi:10.13287/j.1001-9332.201906.021

应用生态学报 ›› 2019, Vol. 30 ›› Issue (6): 2087-2092.doi: 10.13287/j.1001-9332.201906.021

盐度对不同温度下海月水母螅状体存活和无性繁殖的影响

邢永泽^1,3,4, 张梅^1,3, 甄毓^1,2,3,*, 米铁柱^1,2,3

¹中国海洋大学海洋环境与生态教育部重点实验室, 山东青岛 266100;
²青岛海洋科学与技术国家实验室海洋生态与环境科学功能实验室, 山东青岛 266071;
³中国海洋大学环境科学与工程学院, 山东青岛 266100;
⁴广西科学院广西红树林研究中心, 广西红树林保护与利用重点实验室, 广西北海 536000

收稿日期:2018-08-24 出版日期:2019-06-15 发布日期:2019-06-15
通讯作者: * E-mail: zhenyu@ouc.edu.cn
作者简介:邢永泽,男,1983年生,博士研究生. 主要从事海洋生态学研究. E-mail: xingshitou2010@163.com
基金资助:
国家重点研发计划项目(2017YFC1404402)、鳌山科技创新计划项目(2016ASKJ02)和广西自然科学基金项目(2016GXNSFBA380033)资助

Effects of salinity on the survival and asexual reproduction of Aurelia coerulea polyps at different temperatures

XING Yong-ze^1,3,4, ZHANG Mei^1,3, ZHEN Yu^1,2,3,*, MI Tie-zhu^1,2,3

¹Ministry of Education Key Laboratory of Marine Environment and Ecology, Ocean University of China, Qingdao 266100, Shandong, China;
²Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;
³College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
⁴Guangxi Key Laboratory of Mangrove Conservation and Utilization, Guangxi Mangrove Research Center, Guangxi Sciences Academy, Beihai 536000, Guangxi, China

Received:2018-08-24 Online:2019-06-15 Published:2019-06-15
Supported by:
This work was supported by the National Key Research and Development Program of China (2017YFC1404402), the Scientific and Technological Innovation Project of the Qingdao National Laboratory for Marine Science and Technology (2016ASKJ02), and Guangxi Natural Science Foundation (2016GXNSFBA380033)

摘要/Abstract

摘要： 海月水母是全球近岸海域的主要致灾水母种类之一,其螅状体的繁殖情况与种群数量是影响水母暴发的重要因素.采用实验生态学的方法分别研究了高温(21 ℃)和低温(12 ℃)条件下,不同盐度梯度对螅状体存活与无性繁殖的影响.结果表明: 高温条件下,盐度15～40时螅状体存活率均大于90%,适合出芽生殖盐度范围为20～32,其中28为最适盐度;在低盐(≤15)或高盐(≥36)环境下,螅状体会进行足囊生殖以度过不良环境条件. 低温条件下,20～40盐度组螅状体存活率均大于90%,20～32盐度组适于螅状体出芽生殖,其中28盐度组出芽生殖效率最高;20～40盐度适于横裂生殖,其中28～32盐度组最利于螅状体横裂生殖. 说明海月水母螅状体有较强的盐度耐受性,一定范围内盐度对螅状体无性生殖影响不显著.

Abstract: The scyphozoan genus Aurelia is one of the main contributors causing jellyfish blooms in global coastal waters. The population and reproduction of polyps are important factors to the outbreak of jellyfish. In this study, the effects of different salinity on the survival and asexual reproduction of Aurelia coerulea polyps were explored, which were cultured at the high (21 ℃) and low temperature (12 ℃), respectively. The results showed that more than 90% polyps could survive in the salinity range of 15-40 at the high temperature, with a range of salinity for budding being 20-32 and an optimum value of 28. The polyps were able to produce podocysts to tolerate low (≤15) and high (≥36) salinity conditions. At the low temperature, the survival rates of polyps were more than 90% in the salinity range of 20-40. The polyps could produce more buds in the salinity range of 20-32, with an optimum of 28. The salinity range of 20-40 was suitable for strobilation, with an optimum range of 28-32. It is concluded that the polyps of Aurelia coerulea can tolerate wide salinity variations, and that the salinity in a certain range has no significant influence on the asexual reproduction of polyps.

邢永泽, 张梅, 甄毓, 米铁柱. 盐度对不同温度下海月水母螅状体存活和无性繁殖的影响[J]. 应用生态学报, 2019, 30(6): 2087-2092.

XING Yong-ze, ZHANG Mei, ZHEN Yu, MI Tie-zhu. Effects of salinity on the survival and asexual reproduction of Aurelia coerulea polyps at different temperatures[J]. Chinese Journal of Applied Ecology, 2019, 30(6): 2087-2092.

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盐度对不同温度下海月水母螅状体存活和无性繁殖的影响

Effects of salinity on the survival and asexual reproduction of Aurelia coerulea polyps at different temperatures

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