南海北部中国枪乌贼耳石日增量与环境因子关系  

Relationship between statolith daily increment of Uroteuthis chinensis and environmental factors in the Northern South China Sea

作　　者：刘佳翔 李楠 金岳 胡贯宇 方舟[1,3,4,5,6] LIU Jiaxiang;LI Nan;JIN Yue;HU Guanyu;FANG Zhou(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Yellow Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Qingdao 266071,Shandong,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,China;National Engineering Research Center for Oceanic Fisheries,Shanghai 201306,China;Key Laboratory of Oceanic Fisheries Exploration,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China;Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]中国水产科学研究院黄海水产研究所,山东青岛266071 [3]大洋渔业资源可持续开发教育部重点实验室,上海201306 [4]国家远洋渔业工程技术研究中心,上海201306 [5]农业农村部大洋渔业开发重点实验室,上海201306 [6]农业农村部大洋渔业资源环境科学观测实验站,上海201306

出　　处：《上海海洋大学学报》2022年第5期1199-1207,共9页Journal of Shanghai Ocean University

基　　金：国家重点研发计划(2019YFD0901404);国家自然科学基金(41876141);农业农村部外海渔业开发重点实验室开放基金(LOF 2021-01)。

摘　　要：根据2016年4—6月于南海北部采集的中国枪乌贼(Uroteuthis chinensis)样本,采用梯度森林法筛选影响个体生长的关键环境因子,并通过广义加性模型(generalized additive models,GAM)建立耳石日增量与关键环境因子的关系,分析环境因子对个体生长的影响。结果表明:研究中的中国枪乌贼孵化于2015年10月—2016年1月,孵化高峰期为11—12月;海表面温度(sea surface temperature,SST)、25 m水深温度(temperature of 25 m,T_(25))和海表面盐度(sea surface salinity,SSS)是影响枪乌贼产卵群体(11—12月)的关键环境变量。SST为23~28℃时,耳石日增量宽度随着SST的增加呈下降趋势。当T_(25)为23~28℃时,耳石日增量宽度随着T_(25)的增加呈现逐渐下降的趋势。当SSS为33.2~33.8时,耳石日增量随着SSS的增加呈现逐渐下降的趋势。根据结果可以推断,水温和盐度对中国枪乌贼的生长影响显著。According to the samples of Chinese squid(Uroteuthis chinensis)collected in the Northern South China Sea from April to June 2016,using the gradient forest method to screen the key environmental factors which affect individual growth,the relationship between daily increment of statolith and key environmental factors was established through the generalized additive model to analyze the impact of environmental factors on individual growth.The results showed that the squids hatched from October 2015 to January 2016,and the hatching peak was from November to December;sea surface temperature(SST),temperature of 25 m(T_(25))and sea surface salinity(SSS)are the key environmental variables affecting the spawning population of the squids(November to December).When SST changed in the range of 23 to 28℃,the daily increment width of statolith decreased with the increase of SST.When T_(25) changed in the range of 23 to 28℃,the daily increment width of statolith showed a gradual downward trend with the increase of T_(25).When SSS changed in the range of 33.2 to 33.8,the daily increment of statolith decreased gradually with the increase of SSS.It can be inferred from the results that water temperature and salinity have significant effects on the growth of squids.

关 键 词：中国枪乌贼 南海北部 耳石日增量 环境因子 

分 类 号：S931[农业科学—渔业资源]