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Combined Effects of Temperature and Salinity on the Growth and Pulsation of Moon Jellyfish (Aurelia coerulea) Ephyrae
American Journal of Life Sciences
Volume 8, Issue 5, October 2020, Pages: 144-151
Received: Aug. 8, 2020; Accepted: Aug. 20, 2020; Published: Sep. 14, 2020
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Authors
Zhilu Fu, Key Laboratory of Protection and Utilization of Marine Resources, Guangxi University for Nationalities, Nanning, China; Guangxi Key Laboratory of Utilization of Microbial and Botanical Resources, Guangxi University for Nationalities, Nanning, China
Jie Li, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China; School of Marine Science, Guangxi University, Nanning, China
Jiale Wang, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China; School of Marine Science, Guangxi University, Nanning, China
Junxiang Lai, Guangxi Key Laboratory of Marine Environmental Science, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, China
Yin Liu, Liaoning Province Key Laboratory of Marine Biological Resources and Ecology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, China; College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
Ming Sun, Liaoning Province Key Laboratory of Marine Biological Resources and Ecology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, China; Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
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Abstract
Blooms of the scyphozoan jellyfish Aurelia coerulea have caused serious problems for the fishing industry and the power plants in the coastal waters of China. The population size of adult medusae is strongly influenced by their ability to survive the ephyra stage. In this study, the growth and pulsation of A. coerulea ephyrae from the northern Yellow Sea were analyzed under sixteen different temperature (10, 15, 20, and 25°C) and salinity (22, 25, 28 and 31 PSU) combinations over a 21-day experimental period. The temperature had a significant effect on the growth of ephyrae. The growth rate of ephyrae increased with increasing temperature. The effects of salinity and its interaction with temperature on the growth of ephyrae were not significant. The highest growth rate was recorded in the 25°C and 25 PSU group. The pulsation rate of ephyrae was also significantly influenced by temperature. The mean pulsation rates of newly released ephyrae were 24.2, 39.1, 52.5, and 73.15 beats min-1 at 10, 15, 20, and 25°C, respectively. As ephyrae developed into medusae, the pulsation rates generally decreased. Salinity and its interaction with temperature did not have a significant effect on the pulsation of ephyrae. We conclude that a warm spring can cause an A. coerulea bloom in that year.
Keywords
Aurelia coerulea, Ephyrae, Growth, Pulsation, Temperature, Salinity
To cite this article
Zhilu Fu, Jie Li, Jiale Wang, Junxiang Lai, Yin Liu, Ming Sun, Combined Effects of Temperature and Salinity on the Growth and Pulsation of Moon Jellyfish (Aurelia coerulea) Ephyrae, American Journal of Life Sciences. Vol. 8, No. 5, 2020, pp. 144-151. doi: 10.11648/j.ajls.20200805.19
Copyright
Copyright © 2020 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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