Page 135 - 《水产学报》2025年第5期

赵瑞，等 水产学报, 2025, 49(5): 059111

Adaptability of gorgonians to temperature, salinity and light after
branch-cut transplantation

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ZHAO Rui , LIANG Jun 1,2,3* , SUI Youzhen 1,2,3 , HU Yangjie , WU Tian ,
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DING Weikang , LI Xueting 1
1. Zhejiang Marine Fisheries Research Institute,
Marine and Fisheries Institute of Zhejiang Ocean University, Zhoushan 316021, China;
2. Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,
Ministry of Agriculture and Rural Affairs, Zhejiang Ocean University, Zhoushan 316021, China;
3. Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province,
Zhejiang Ocean University, Zhoushan 316021, China

Abstract: Gorgonians serve as crucial natural spawning substrates for Sepiella japonica. Given the decline in gorgonian
resources, restoring their populations and reconstructing the key habitats for squids is of urgent importance. In July 2021, 80
strains of white and red gorgonian corals were collected from the Zhongjieshan Archipelago Marine Special Reserve. This
study analyzed the survival rates and openness levels of Menella sp. and Suberogorgia sp. under four different time periods
(7:00, 11:00, 15:00, 19:00), five different temperature gradients (10, 15, 20, 25, 30 °C), six different salinity gradients (10, 15,
20, 25, 30, 35), and four light types (blue light, blue and white light, white light, indoor natural light) using the two-point and
Duncan methods. The adaptability of transplanted gorgonians to three key environmental factors was explored. Results indic-
ated that both Menella sp. and Suberogorgia sp. were most active at 19:00. The optimum survival temperature and salinity
for Menella sp. were 21.9-26.9 °C and 17.7-24.4, respectively, with survival rates of 90.8% and 85.1%. Menella sp. was sensit-
ive to blue and white light, with 57.9% and 40.2% of individuals achieving grade III or higher openness under these light condi-
tions. For Suberogorgia sp., the optimal survival salinity was 24.4-34.6, with a survival rate of 95.4%, and sensitivity to white
light. The proportion of individuals achieving grade III or higher openness for salinity and light was 23.4% and 54.1%, respect-
ively. Both gorgonian species demonstrated adaptability to different environmental factors following branch-cut transplantation.
The survival rate and openness grade of Menella sp. were significantly higher than those Suberogorgia sp. These findings
provide a theoretical basis for ecological restoration and resource conservation of gorgonian corals.
Key words: Menella sp.; Suberogorgia sp.; branch-cutting transplantation; temperature; salinity; light
Corresponding author: LIANG Jun. E-mail: jliang@zjou.edu.cn
Funding projects: National Key R & D Program of China (2020YFD0900804, 2019YFD0901205, 2019YFD0901204);
National Natural Science Foundation of China (31702346); Key R & D Program of Zhejiang Province (2019C02056)

中国水产学会主办 sponsored by China Society of Fisheries https://www.china-fishery.cn
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