水产学报2024，Vol.48Issue(10)：118-127,10.DOI:10.11964/jfc.20210312701
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)
摘要
Abstract
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 nat-ural 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 com-pared 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 individu-als 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 different light colors.This study helps to understand the characteristics of krill schools in autumn and winter seasons,and provides scientific references for the input parameters of the TS model for krill resource evaluation,in order to improve the evaluation accuracy of the model.关键词
南极磷虾/集群/光色/立体成像/游泳角度Key words
Euphausia superba/aggregation/lighting regime/stereo imaging/swimming angle分类
生物科学引用本文复制引用
刘子俊,汪佳丽,马振玲,王晓敏,袁军亭,许柳雄,朱国平..可见光光色对南极磷虾集群行为的影响[J].水产学报,2024,48(10):118-127,10.基金项目
国家重点研发计划国际科技合作重点专项(2023YFE0104500) （2023YFE0104500）
国家自然科学基金(41776185) 感谢中国水产总公司"龙腾"轮船长、政委、各位船员实验过程中给予的帮助.本项目还得到了农业农村部南极海洋生物资源开发利用项目以及上海海洋大学和上海市大学生创新项目的支持. The'Inter-governmental Science and Technology Innovation(STI)Cooperation Special Pro-gramme of the National Key Research and Development Programme(2023YFE0104500) （41776185）
National Natural Sci-ence Foundation of China(41776185) （41776185）
