Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891)

doi:10.3390/su14095202

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	Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891)
	Sun, Ming 1,2,3,4,5; Chen, Fudi 1,3,5; Duan, Yan 4; Sun, Jianming 1,2,3,4,5
刊名	SUSTAINABILITY
	2022-05-01
卷号	14 期号:9 页码:13
关键词	economic jellyfish experimental ecology control technology polyps asexual reproduction resource utilization
DOI	10.3390/su14095202
通讯作者	Sun, Jianming(jianming_sun@outlook.com)
英文摘要	Simple Summary This study was based on the determination of podocyst excystment, start time of strobilation, duration of strobilation, and cumulative ephyra numbers of the edible jellyfish Rhopilema esculentum (Kishinouye, 1891) podocysts which were preserved at 2 +/- 1 degrees C for more than 12 months. To this end, the podocysts were tested under nine combinations of three variable temperatures (simulated temperatures increasing from different starting dates of 14.5 degrees C on 1 April, 18 degrees C on 1 May, and 23.2 degrees C on 1 July respectively to natural levels) and three salinities (20, 25, and 30). Podocyst excystment and ephyrae production occurred in all treatments. Higher temperature and lower salinity significantly facilitated the podocyst excystment and accelerated the start time of strobilation (p < 0.05). Significantly greater ephyra numbers were produced with lower salinity (20 and 25) and temperatures increasing from 18 degrees C on 1 May to natural levels (p < 0.05). As one of the edible jellyfish species, Rhopilema esculentum (Kishinouye, 1891) is a traditional fishery resource and an important economic aquaculture species in China. However, facing the current situation of natural resources exhaustion and problems of breeding population frequent disease, quantity, and quality of seedlings in artificial breeding cannot satisfy the market demand. Temperature and salinity have been considered to play crucial roles in regulating R. esculentum asexual reproduction. This study examined the combined effects by exposing post-preserved R. esculentum podocysts (preserved at 2 +/- 1 degrees C for more than 12 months) to three variable temperatures (simulated temperatures increasing from different starting dates of 14.5 degrees C on 1 April, 18 degrees C on 1 May, and 23.2 degrees C on 1 July, respective to natural levels) and three salinities (20, 25, and 30). Podocyst excystment, the start time of strobilation, duration of strobilation, and cumulative ephyra numbers were tested for 45 days and transfer rates from podocysts to ephyrae were analyzed to assess the most optimal combination of temperature and salinity. The results showed that podocyst excystment and ephyrae production occurred in all treatments. Higher temperature and lower salinity significantly facilitated the podocyst excystment and accelerated the start time of strobilation (p < 0.05). Significantly greater ephyra numbers were produced with lower salinity (20 and 25) and temperatures increasing from 18 degrees C on 1 May to natural levels (p < 0.05). There were significant interactions between temperature and salinity on the cumulative ephyra numbers and transfer rates from podocysts to ephyrae (p < 0.05). These results suggested that R. esculentum podocysts for long-term preservation at low temperature could be recycled. Temperature and salinity regulation can affect the number and time of R. esculentum seedlings to achieve high production and satisfy the market demand for real-time seedling supply. This conclusion would provide a scientific basis for the innovative methods of sustainable utilization of the edible jellyfish (R. esculentum) resources.
资助项目	Liaoning Academy of Agricultural Sciences Dean Fund Program[2021MS0505] ; National Natural Science Foundation of China[41906138] ; National Natural Science Foundation of China[31770458] ; National Key R&D Program of China[2017YFC1404401]
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
出版者	MDPI
WOS记录号	WOS:000794496200001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/179218]
专题	海洋研究所_实验海洋生物学重点实验室
通讯作者	Sun, Jianming
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, CAS & Shandong Prov Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China 4.Liaoning Ocean & Fisheries Sci Res Inst, Liaoning Prov Key Lab Marine Biol Resources & Eco, Dalian Key Lab Conservat Fishery Resources, Dalian 116023, Peoples R China 5.Ctr Ocean Mega Sci, Chinese Acad Sci, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Sun, Ming,Chen, Fudi,Duan, Yan,et al. Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891)[J]. SUSTAINABILITY,2022,14(9):13.
APA	Sun, Ming,Chen, Fudi,Duan, Yan,&Sun, Jianming.(2022).Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891).SUSTAINABILITY,14(9),13.
MLA	Sun, Ming,et al."Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891)".SUSTAINABILITY 14.9(2022):13.