基于眼柄微结构的南极大磷虾生长分析  

A study on growth of Euphausia superba based on eyestalk microstructure analysis

作　　者：冯春雷 舒畅[3] 王永进 屈泰春 刘必林[3] FENG Chunlei;SHU Chang;WANG Yongjin;QU Taichun;LIU Bilin(Engineering Technology Research Center of Marine Fishing,Chinese Academy of Fishery Sciences,Shanghai 200090,China;Key Laboratory of East China Sea and Oceanic Fishery Resources Erploitation and Utilization,Ministry of Agriculture and Rural Affairs,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;College of Marine Living Resource Sciences and Management,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]中国水产科学研究院海洋捕捞工程技术研究中心,上海200090 [2]中国水产科学研究院东海水产研究所,农业农村部东海与远洋渔业资源开发利用重点实验室,上海200090 [3]上海海洋大学海洋生物资源与管理学院,上海201306

出　　处：《海洋渔业》2025年第2期283-291,共9页Marine Fisheries

基　　金：国家重点研发计划项目(2023YFD2401200)。

摘　　要：为精确评估南极大磷虾(Euphausia superba)种群的年龄结构和生长特征,基于其眼柄微结构,采用硬组织生长纹分析法研究了南极大磷虾生长纹与年龄及体长、体质量的关系。结果显示,南极大磷虾存在5个年龄组;眼柄切片的纵切面显示其微结构由表层、色素层、钙化层和膜层等4部分组成,在其微结构中可以观察到宽带和细纹两种生长纹,其中宽带的数目为1~5个,细纹间距波动变化不明显,生长纹宽带数目与其体长、体质量都呈现出Logistic关系。研究结果可为其他甲壳类的年龄鉴定及其生长研究提供新思路,为渔业资源管理和渔业生物学研究提供资料及重要参考。The age and growth patterns of Euphausia superba are crucial for understanding its role in the marine ecosystem,as well as for managing sustainable fisheries resources.This study investigated the growth characteristics of E.superba through analysis of growth rings in the eyestalk microstructure.The research utilized the hard tissue growth ring analysis method,which had proven effective in determining age and correlating it with key biological factors such as body length and body weight.The aim is to develop a reliable method for age determination and to explore how these parameters are linked to the krill's growth.The body length frequency distribution indicated the presence of five distinct age groups,each corresponding to specific growth stages.The eyestalk microstructure revealed that it was composed of four distinct layers:epicuticle,exocuticle,endocuticle,and membranous layer.These layers played different roles in the overall structure and function of the eyestalk.Within these layers,two types of growth rings were observed:bands and increments.The number of bands ranged from one to five per individual.Importantly,the spacing between increments remained relatively stable,with no significant fluctuation observed across different age groups.This consistency was crucial for establishing an accurate methodology for age determination.The study demonstrated a significant logistic relationship between the number of bands and both body length and body weight of E.superba.These findings are not only valuable for the study of E.superba,but they also offer insights that can be applied to other crustacean species,improving age determination accuracy and expanding the use of eyestalk microstructure as a tool for growth analysis in marine biology.This research provides essential data for the management of E.superba populations,which are a critical component of the Southern Ocean food web.By improving age and growth assessments,these findings support more effective fisheries management strategies,contributing to the sustain

关 键 词：南极大磷虾 眼柄微结构 生长模型 

分 类 号：S917.4[农业科学—水产科学]