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 ›› 2021, Vol. 32 ›› Issue (5): 1881-1889.doi: 10.13287/j.1001-9332.202105.037

• 研究论文 • 上一篇    下一篇

西北印度洋鸢乌贼角质颚外形变化的影响因素

何静茹1, 陆化杰1,2,3,4,5,6*, 陈炫妤1, 刘凯1, 王洪浩1, 陈新军1,2,3,4,5,6   

  1. 1上海海洋大学海洋科学学院, 上海 201306;
    2青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室, 山东青岛 266071;
    3国家远洋渔业工程技术研究中心, 上海 201306;
    4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;
    5农业农村部大洋渔业开发重点实验室, 上海 201306;
    6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:2020-07-27 接受日期:2021-02-06 出版日期:2021-05-15 发布日期:2021-11-15
  • 通讯作者: *E-mail: hjlu@shou.edu.cn
  • 作者简介:何静茹,女,1998年生,硕士研究生。主要从事头足类生态学和海洋学研究。E-mail:17806230736@163.com
  • 基金资助:
    国家重点研发计划项目(2019YFD0901404,2019YFD090402)、国家自然科学基金项目(41506184,41876141)和浙江省科学技术厅重点研发计划项目(2018C02026)资助

Factors influencing beak morphology of Sthenoteuthis oualaniensis in the northwest Indian Ocean.

HE Jing-ru1, LU Hua-jie1,2,3,4,5,6*, CHEN Xuan-yu1, LIU Kai1, WANG Hong-hao1, CHEN Xin-jun1,2,3,4,5,6   

  1. 1College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;
    2Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, Shandong, China;
    3National Distant-water Fisheries Engineering Research Center, Shanghai 201306, China;
    4Ministry of Education Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai 201306, China;
    5Key Laboratory of Oceanic Fisheries Exploration, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China;
    6Scientific Observing and Experimental Station of Oceanic Fishery Resources, Ministry of Agriculture and Rural Affairs, Shanghai 201306, China
  • Received:2020-07-27 Accepted:2021-02-06 Online:2021-05-15 Published:2021-11-15
  • Contact: *E-mail: hjlu@shou.edu.cn
  • Supported by:
    National Key R&D Program of China (2019YFD0901404, 2019YFD090402), the National Natural Science Foundation of China (41506184, 41876141) and the Key R&D Project of Science and Technology Department of Zhejiang Province (2018C02026).

摘要: 根据2019年冬春季(2—5月)中国灯光罩网渔船在西北印度洋生产调查期间采集的1009尾鸢乌贼样本,分析了其角质颚外部形态变化的影响因素。结果表明: 角质颚外形特征参数在不同性别、不同胴长组和不同性腺成熟度间均存在显著差异。胴长组201~250 mm以及雌性个体性腺成熟度Ⅱ期和雄性个体性腺成熟度Ⅲ期的各特征参数增幅达到峰值。除上翼长与上脊突长比值(UWL/UCL)和下头盖长与下脊突长比值(LHL/LCL)存在性别间显著差异外,其余特征参数与脊突长的比值均无性别间显著差异,各特征参数与脊突长的比值在不同性腺成熟度、不同胴长组间也无显著差异,比值保持稳定,表明角质颚各区域生长保持一致。研究表明,201~250 mm可能是西北印度洋鸢乌贼角质颚外部形态在胴长上的生长拐点,雌性个体性腺成熟度Ⅱ期和雄性个体性腺成熟度Ⅲ期可能对应角质颚外部形态在性腺成熟度上的生长拐点。

关键词: 鸢乌贼, 角质颚, 个体生长, 外部形态, 西北印度洋

Abstract: With 1009 Sthenoteuthis oualaniensis samples collected by Chinese light falling-net fishery during February to May in the northwest Indian Ocean, we analyzed the influencing factors of the morphology change of the beak. There were significant differences in the morphologic growth between genders, different gonad maturity stages, and different mantle length. The increment of characteristic parameters growth peaked in the mantle length between 201 and 250 mm, and in the Ⅱ and Ⅲ stages of gonad maturity for females and males, respectively. There was no significant difference in the ratio of morphometric parameters to crest length (CL) between the genders, diffe-rent gonad maturity stages, and different mantle length, except for the ratio of upper hood length to upper crest length (UWL/UCL) and lower hood length to lower crest length (LHL/LCL). The ratio of each characteristic parameter to CL was nearly stable with the change of sex, gonad maturity and mantle length, suggesting consistent growth of each dome of beak. Our results suggested the mantle length of 201 mm to 250 mm seemed to be the threshold for the morphologic growth of beak on the body size, while the gonad maturity of Ⅱ and Ⅲ stages seemed to be the threshold for the morphologic growth of beak on the gonad maturity.

Key words: Sthenoeuthis oualaniensis, beak, individual growth, morphology, the northwest Indian Ocean