文章摘要
盐度骤降对近江牡蛎和长牡蛎能量收支的影响
IMPACT OF SUDDEN SALINITY ON ENERGY BUDGETS OF Crassostrea gigas AND Crassostrea ariakensis
投稿时间:2020-02-20  修订日期:2020-03-16
DOI:
中文关键词: 盐度  长牡蛎  近江牡蛎  能量代谢
英文关键词: Salinity  Crassostrea gigas  Crassostrea ariakensis  Energy Metabolism  
基金项目:国家重点研发计划“蓝色粮仓科技创新”重点专项(2019YFD0900803),国家贝类产业技术体系(CARS-48)和中国水产科学研究院黄海水产研究所基本科研业务费项目(20603022017002)联合资助。This work was supported by National Key Research and Development Project (2019YFD0900803), Modern Agro-industry Technology Research System (CARS-48), and Special Scientific Research Funds for Central Non-profit Institute, Yellow Sea Fisheries Research Institute, CAFS (20603022017002).霍恩泽, E-mail: 2262170688@qq.com
作者单位E-mail
霍恩泽 上海海洋大学水产与生命学院 2262170688@qq.com 
张雯雯 上海海洋大学水产与生命学院  
李加琦 农业部海洋渔业可持续发展重点实验室  
丁敬坤 上海海洋大学水产与生命学院  
薛素燕 农业部海洋渔业可持续发展重点实验室  
王英朴 农业部海洋渔业可持续发展重点实验室  
于文涵 上海海洋大学水产与生命学院  
侯兴 上海海洋大学水产与生命学院  
蒋增杰 农业部海洋渔业可持续发展重点实验室  
毛玉泽 农业部海洋渔业可持续发展重点实验室 116646852@qq.com 
方建光 农业部海洋渔业可持续发展重点实验室  
摘要点击次数: 141
全文下载次数: 0
中文摘要:
      牡蛎礁恢复是世界范围关注的热点问题,长牡蛎和近江牡蛎是组成牡蛎礁的重要种类,但两种牡蛎在低盐河口区的演替规律并不相同。本研究采用实验生态学方法,研究了盐度骤降(10和20,自然海水为对照)对近江牡蛎和长牡蛎生理代谢的影响。结果显示,盐度骤降对长牡蛎和近江牡蛎的耗氧率、排氨率、排粪率均有显著性影响(p<0.05),而且两种牡蛎对盐度骤降的响应也存在差异。长牡蛎的耗氧率、排氨率、摄食率和排粪率都是在自然海水中(盐度约30)最高,低盐产生不同程度的胁迫,而近江牡蛎在盐度20时上述指标高于其他盐度处理组。通过测定不同规格牡蛎的代谢率,建立了两种牡蛎在不同盐度下的代谢率与规格(湿重)的回归方程,该方程符合幂指数Y=aWb;通过归一化处理,比较了湿重在20g时两种牡蛎的能量分配差异,盐度20时,近江牡蛎的呼吸代谢较强,呼吸能占16.1%,而长牡蛎在自然海水中呼吸代谢较强(呼吸能占7.8%),低盐10时较低(呼吸能占能量收支的0.7%)。本研究结果表明,盐度骤降对长牡蛎的影响大于近江牡蛎,小幅度的盐度骤降对近江牡蛎的能量代谢甚至有一定的促进作用。本研究从能量代谢角度,探讨了近江牡蛎和长牡蛎对盐度骤变的响应机制,为牡蛎礁修复工作和养殖生产过程中的品种选择提供参考。
英文摘要:
      Abstract The restoration of oyster reefs is a hot issue worldwide. Crassostrea gigas and Crassostrea ariakensis are two important species that build up oyster reefs, but the population dynamics of these two species in low-salinity estuaries are not the same. In this study, we used methods from experimental ecology to study the effects of acute salinity decline (10 and 20, with natural seawater as controls) on the physiological metabolism of C. gigas and C. ariakensis. Results showed that acute low-salinity incubation significantly affected the oxygen consumption rate, ammonia excretion rate, and defecation rate of C. gigas and C. ariakensis (p <0.05), and the responses of the two species were also different .The highest oxygen consumption rate, ammonia excretion rate, feeding rate and defecation rate of C. gigas are found in control (about 30 psu), which demonstrated that low salinity impacted metabolism of this species. However, C. ariakensis showed better performance on these metabolic parameters at 20 psu than that in the other two groups. To normalize the metabolic rate of oyster with a broad range wet weight, a regression equation for the metabolic rate to wet weight was established, which is fitting Y = aWb. The wet weight (20 g) was used for the comparison after normalization. At 20 psu, the respiration rate of C. ariakensis is strong, and the respiration energy accounts for 16.1%, while C. gigas showed stronger respiration metabolism in natural seawater (respiratory energy accounts for 7.8%), and it is lower at 10 psu (respiratory energy accounts for 0.7%). Our results indicated that the acute low-salinity incubation had significant impact on C. gigas than C. ariakensis, and a low-level reduction in salinity can even promote energy metabolism C. ariakensis. From the perspective of energy metabolism, this study explored the response mechanisms of C. gigas and C. ariakensis toacute reduction in salinity, and provided references for oyster reef restoration and selective breeding and aquaculture.
相关附件:   附件1  万方20200220(13.76%)  附件1  万方20200220(13.76%)  附件1  附件1  附件2  万方20200310_审稿(11.69%)  附件1  附件2  万方20200313_审稿(11.69%)  附件1  附件2  附件3  万方20200316_审稿(11.69%)
View Fulltext   查看/发表评论  下载PDF阅读器
关闭