断枝移植的柳珊瑚对温度、盐度和光照的适应性  

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

作　　者：赵瑞 梁君 隋宥珍 胡扬杰 吴天 丁伟康 李雪珽 ZHAO Rui;LIANG Jun;SUI Youzhen;HU Yangjie;WU Tian;DING Weikang;LI Xueting(Zhejiang Marine Fisheries Research Institute,Marine and Fisheries Institute of Zhejiang Ocean University,Zhoushan 316021,China;Scientific Observing and Experimental Station of Fishery Resources for Key Fishing Grounds,Ministry of Agriculture and Rural Affairs,Zhejiang Ocean University,Zhoushan 316021,China;Key Laboratory of Sustainable Utilization of Technology Research for Fishery Resource of Zhejiang Province,Zhejiang Ocean University,Zhoushan 316021,China)

机构地区：[1]浙江海洋大学海洋与渔业研究所,浙江省海洋水产研究所,浙江舟山316021 [2]浙江海洋大学,农业农村部重点渔场渔业资源科学观测实验站,浙江舟山316021 [3]浙江海洋大学,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021

出　　处：《水产学报》2025年第5期118-132,共15页Journal of Fisheries of China

基　　金：国家重点研发计划(2020YFD0900804,2019YFD0901205,2019YFD0901204);国家自然科学基金(31702346);浙江省重点研发计划(2019C02056)。

摘　　要：【目的】为实现柳珊瑚资源恢复,移植和增殖是一种有效途径,前提是需要了解柳珊瑚的生态习性,本研究开展了温度、盐度和光照三种环境因子实验,以探明断枝移植的柳珊瑚对不同环境因子的适应性。【方法】以2021年7月在中街山列岛海洋特别保护区内采集的各80株白色(东海小月柳珊瑚)和红色(东海软柳珊瑚)珊瑚为研究对象。在室内条件下,利用两点法和Duncan氏法分析了柳珊瑚在4个不同时间点(7:00、11:00、15:00、19:00)、5个不同温度梯度(10、15、20、25和30°C)、6个不同盐度梯度(10、15、20、25、30、35)和4种不同光照类型(蓝光、蓝白光、白光、室内自然光)条件下的存活率和开放等级状况,揭示柳珊瑚的最佳生存条件。【结果】①东海小月柳珊瑚和东海软柳珊瑚体内的珊瑚虫均在19:00活跃;②实验组东海小月柳珊瑚适宜生存温度和盐度分别为21.9~26.9°C和17.7~24.4,成活率分别为90.8%和85.1%,且对蓝白光源敏感,温度和光照开放等级Ⅲ级以上占比分别为57.9%和40.2%;③实验组东海软柳珊瑚适宜生存盐度为24.4~34.6,成活率高达95.4%,对白光敏感,盐度和光照开放等级Ⅲ级以上占比分别为23.4%和54.1%;④一旦两种柳珊瑚接受的光照超过适宜范围,均会呈现烧焦状态。【结论】两种不同的柳珊瑚在断枝移植的情况下对不同环境因子有一定的适应性,断枝移植的东海小月柳珊瑚存活率和开放等级状况明显高于东海软柳珊瑚。存活率和开放等级两个参数可以表征柳珊瑚在不同环境因子下的健康状态,研究结果可为柳珊瑚生态修复和资源养护提供理论依据。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 indicated 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 sensitive to blue and white light,with 57.9%and 40.2%of individuals achieving grade III or higher openness under these light conditions.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%,respectively.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.

关 键 词：小月柳珊瑚 软柳珊瑚 断枝移植 温度 盐度 光照 

分 类 号：S917.4[农业科学—水产科学]