欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2022, Vol. 33 ›› Issue (12): 3419-3426.doi: 10.13287/j.1001-9332.202212.028

• 研究论文 • 上一篇    下一篇

西北印度洋海域鸢乌贼耳石微结构及生长特性

王洪浩1, 陆化杰1,2,3,4,5*, 何静茹1, 刘凯1, 陈炫妤1, 陈新军1,2,3,4,5   

  1. 1上海海洋大学海洋科学学院, 上海 201306;
    2国家远洋渔业工程技术研究中心, 上海 201306;
    3大洋渔业资源可持续开发省部共建教育部重点实验室, 上海 201306;
    4农业农村部大洋渔业开发重点实验室, 上海 201306;
    5农业农村部大洋渔业资源环境科学观测实验站, 上海 201306
  • 收稿日期:2021-11-21 接受日期:2022-03-15 出版日期:2022-12-15 发布日期:2023-07-05
  • 通讯作者: * E-mail: hjlu@shou.edu.cn
  • 作者简介:王洪浩, 男, 1997年生, 硕士研究生。主要从事渔业资源学研究。E-mail: 975719417@qq.com
  • 基金资助:
    国家重点研发计划项目(2019YFD090402)和国家自然科学基金项目(NSFC 41506184)

Statolith microstructure and growth characteristics of Sthenoeuthis oualaniensis in the northwest Indian Ocean

WANG Hong-hao1, LU Hua-jie1,2,3,4,5*, HE Jing-ru1, LIU Kai1, CHEN Xuan-yu1, CHEN Xin-jun1,2,3,4,5   

  1. 1College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;
    2National Distant-water Fisheries Engineering Research Center, Shanghai 201306, China;
    3Ministry of Education Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai 201306, China;
    4Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China;
    5Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China
  • Received:2021-11-21 Accepted:2022-03-15 Online:2022-12-15 Published:2023-07-05

摘要: 耳石是研究头足类年龄与生长、种群结构和生活史的重要硬组织之一。为研究西北印度洋鸢乌贼耳石微结构及生长特性,根据2019年2—5月我国灯光罩网渔船在西北印度洋调查生产期间采集的1009尾鸢乌贼样本,以耳石总长(TSL)、侧区长(LDL)、翼区长(WL)和最大宽度(MW)作为耳石的外形生长指标,结合日龄数据,对西北印度洋鸢乌贼耳石微结构及其生长特性进行了研究。结果表明: 根据生长纹间宽度,可将耳石微结构分为后核心区、暗区和外围区。协方差分析表明,TSL、LDL、WL和MW与日龄的关系均不存在显著的性别间差异,TSL、WL和MW与日龄的关系最适合用幂函数表示,而LDL与日龄的关系最适合用线性函数表示。总体而言,随着鸢乌贼日龄的增加,TSL、WL、LDL与MW的瞬时相对生长率与绝对生长率基本呈现下降的趋势, 140~180 d可能是西北印度洋鸢乌贼性成熟的日龄段。

关键词: 鸢乌贼, 耳石微结构, 西北印度洋, 生长特性

Abstract: Statolith is one of the most important hard tissues to study the age, growth, population structure and life history of cephalopods. In order to stuty statolith microstructure and growth characteristics of Sthenoeuthis oualaniensis in the northwest Indian Ocean, 1009 samples were collected by Chinese light falling-net fishery fleets during investigation and production in the northwest Indian Ocean from February to May of 2019. Total statolith length (TSL), lateral dome length (LDL), wing length (WL) and maximum width (MW) were taken as the indicators of morphological feature of the statolith, combined with the age data, the statolith microstructure and growth characteristics of S. oualaniensis were studied. The results showed that the statolith microstructure could be divided into postnuclear zone, dark zone and peripheral zone according to the width of growth increment. The analysis of covariance showed that there was no growth difference of TSL, LDL, WL and MW between different sexes. The relationships between TSL, WL, MW and age were best described by the power functions, while the relationship between LDL and age was best described by the linear function. In general, with the increase of age, the instantaneous relative growth rate and absolute growth rate of TSL, WL, LDL and MW decreased, and 140-180 d may be the age of sexual maturity for this squid.

Key words: Sthenoeuthis oualaniensis, statolith microstructure, the northwest Indian Ocean, growth characteristic