可见光光色对南极磷虾集群行为的影响  

Effect of changing visible light regimes on aggregation of Antarctic krill(Euphausia superba)

作　　者：刘子俊[1,2] 汪佳丽 马振玲 王晓敏 袁军亭[4] 许柳雄[1] 朱国平[1,2,5,6] LIU Zijun;WANG Jiali;MA Zhenling;WANG Xiaomin;YUAN Junting;XU Liuxiong;ZHU Guoping(College of Marine Living Resource Sciences and Management,Shanghai Ocean University,Shanghai 201306,China;Center for Polar Research,Shanghai Ocean University,Shanghai 201306,China;College of Information Technology,Shanghai Ocean University,Shanghai 201306,China;College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;Polar Marine Ecosystem Laboratory,Ministry of Education Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Shanghai Ocean University,Shanghai 201306,China;National Engineering Research Center for Oceanic Fisheries,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学海洋生物资源与管理学院,上海201306 [2]上海海洋大学极地研究中心,上海201306 [3]上海海洋大学信息学院,上海201306 [4]上海海洋大学工程学院,上海201306 [5]上海海洋大学,大洋渔业资源可持续开发教育部重点实验室,极地海洋生态系统研究室,上海201306 [6]上海海洋大学,国家远洋渔业工程技术研究中心,上海210306

出　　处：《水产学报》2024年第10期118-127,共10页Journal of Fisheries of China

基　　金：国家重点研发计划国际科技合作重点专项(2023YFE0104500);国家自然科学基金(41776185)。

摘　　要：南极磷虾为南极海洋生态系统中的关键物种,但有关南极磷虾反馈光色的机制研究极为缺乏。为了加深对该物种生态学的理解,本研究通过海上现场水箱暂养的方式探究了可见光光色对南极磷虾集群行为的影响。利用光学立体相机同步获取磷虾集群影像,借助摄影测量技术完成南极磷虾个体关键特征点几何信息的高精度自动量测,进而得到可见光中短波蓝光至长波红光间不同光色下集群内个体间距及其游泳倾角。结果显示,磷虾群的绝对个体间距为(14.51±9.71)cm,相对个体间距为(2.84±1.51)BL,不同光照下的游泳角度为(46.08±35.50)°,并且主要集中在60°左右。研究表明,光色会影响南极磷虾集群内个体的间距,短波蓝光和长波红光间具有显著差异,相较于长波的红光,蓝光的趋向性更佳,但游泳倾角在不同的光色间无显著差异。实验结果将有助于理解野外南极磷虾集群的大小规模以及提升声学评估中目标强度(TS)模型的精度。Antarctic krill(Euphausia superba)is the keystone species in the Antarctic marine ecosystem,and is also the marine protein source that left for human beings.E.superba is creatures that inherently form schools and display intricate social interactions.It is also known to engage in both vertical and horizontal movements in its natural habitat.The social dynamics within these schools are crucial to understanding various biological aspects of E.superba.Consequently,researches into its behavior are essential for comprehensive grasp of krill biology.The effect of visible light color on the aggregation behavior of E.superba was investigated through in-situ aquaria observation on the sea.Understanding the characteristics of the distance between individuals and their swimming angles within schools will help understand the size of schools in the field and improve the accuracy of the target strength(TS)model in acoustic estimate of this species.The krill school images were synchronously acquired by an optical stereo camera in this study.The high-precision automatic measurement of the geometric information of the key feature points of the krill individuals was completed with the help of photogrammetry technology,then obtained the individual distances and swimming angle in the schools under different visible light colors from blue(short-wave)to red(long-wave).Research had found that blue light had a better positive phototaxis to krill compared with long-wavelength red light.The absolute individual spacing of krill schools was(14.51±9.71)cm,and the relative individual spacing was(2.84±1.51)BL.The lighting conditions affected the distance between individuals in the krill schools,and there were significant differences in distance and swimming angle between individuals in the krill schools between short-wavelength blue light and long-wavelength red light.The swimming angle of E.superba under different light colors was(46.08±35.50)°and concentrated around 60°.There was no significant difference in swimming angle between diffe

关 键 词：南极磷虾 集群 光色 立体成像 游泳角度 

分 类 号：Q178.1[生物学—水生生物学] S917.4[生物学—普通生物学]