春季西北印度洋鸢乌贼摄食及繁殖生物学特性研究  

Feeding and Reproductive Characteristics of Sthenoteuthis oualaniensis in the Northwest Indian Ocean in Spring

作　　者：赵懋林 陆化杰[1,2,3,4,5] 杨思哲 何静茹 王洪浩 陈子越 陈新军[1,2,3,4,5] Zhao Maolin;Lu Huajie;Yang Sizhe;He Jingru;Wang Honghao;Chen Ziyue;Chen Xinjun(College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;National Distant-Water Fisheries Engineering Research Center, Shanghai Ocean University, Shanghai 201306, China;The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Ministry of Education, Shanghai Ocean University, Shanghai 201306, China;The Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China;Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai 201306, China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学国家远洋渔业工程技术研究中心,上海201306 [3]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,上海201306 [4]上海海洋大学农业农村部大洋渔业开发重点实验室,上海201306 [5]上海海洋大学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：《中国海洋大学学报（自然科学版）》2022年第6期69-78,共10页Periodical of Ocean University of China

基　　金：国家重点研究发展计划项目(2019YFD090402);国家自然科学基金青年科学基金项目(41506184);国家自然科学基金面上项目(41876141);上海市科技创新行动计划项目(19DZ1207502)资助。

摘　　要：为探究春季西北印度洋鸢乌贼(Sthenoteuthis oualaniensis)摄食及繁殖生物学特性,采用2019年3—5月采集于西北印度洋的557尾鸢乌贼样本,研究了其摄食习性和性腺发育特征,并用残差指标分析法对其生殖投入进行了研究。研究表明,西北印度洋鸢乌贼摄食等级的分布存在雌雄差异,且同一性别在不同月份的摄食等级差异很大。在性腺发育方面,雌性性腺指数与缠卵腺指数显著相关,雄性性腺指数与精荚复合体指数显著相关。残差分析结果表明:雌性体征指标与生殖投入指标不存在显著相关性;随着性腺发育等级的提高,雌性体征指标呈下降趋势,生殖投入指标则呈上升趋势;随着摄食等级的提高,雌性体征指标呈下降趋势,生殖投入指标则呈上升趋势。雄性体征指标与生殖投入指标呈正相关关系,体征指标和生殖投入指标均随性腺发育呈上升趋势,体征指标和生殖投入指标均随摄食等级的增加呈先下降后升高趋势。研究结果表明,西北印度洋鸢乌贼在性腺发育过程中持续摄食,其生殖能量投入倾向于外源性投入。The feeding habit,gonad development and reproductive investment of Sthenoteuthis oualaniensis were studied based on the 557 samples collected in the northwestern Indian Ocean from March to May in 2021.The results showed that there were differences between males and females in the distribution of stomach fullness degree(FD)of S.oualaniensis in the northwest Indian Ocean,and the FD of the same sex in different months was also different.There was significant correspondence between the gonadosomatic index(GSI)and nidamental gland index(NGI)for females.There was a significant correspondence between the gonadosomatic index(GSI)and spermatophoric complex index(SCI)for males.There was no significant correlation between the body condition indices and the reproductive investment indices.The body condition indices decreased with maturity while the reproductive investment indices increased with sexual maturation for females.The body condition index of females showed a decreasing trend whereas the reproductive investment index increased with higher stomach fullness degree.The body condition indices were slightly positively correlated with the reproductive investment indices.Both the body condition indices and the reproductive investment indices increased with sexual maturation,and both the body condition indices and the reproductive investment indices of males decreased firstly and then increased with the increase of stomach fullness degree for males.Therefore,these evidences indicated that S.oualaniensis continues feeding during sexual maturation.The mode of reproductive investment of S.oualaniensis was more likely to be income breeding.

关 键 词：鸢乌贼 摄食强度 性腺指数 生殖投入 残差分析 

分 类 号：S932.4[农业科学—渔业资源]