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工厂化养殖条件下中华蛸生长特性研究

  1. （1 中国水产科学研究院黄海水产研究所，青岛海洋科学与技术试点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；
    2 上海海洋大学水产与生命学院，上海 201306）
  • 出版日期:2022-08-20 发布日期:2022-11-04
  • 通讯作者: 陈四清(1966—)，男，研究员，研究方向：头足类苗种繁育与养殖技术。E-mail: chensq@ysfri.ac.cn
  • 作者简介:李美帅(1997—)，男，硕士研究生，研究方向：头足类种质繁育。E-mail:lmeishuai@163.com
  • 基金资助:
    财政部和农业农村部国家现代农业产业技术体系项目

Study on growth characteristics of Octopus sinensis under industrial aquaculture condition

  1. （1 Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), 266071, Qingdao, Shandong, China; 2 College of Fisheries and Life Science, Shanghai Ocean University, 201306, Shanghai, China）
  • Online:2022-08-20 Published:2022-11-04

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摘要： 为了解工厂化养殖条件下中华蛸（Octopus sinensis）的生长特性，在水温24.5 ~ 26.3 ℃的条件下，运用Gompertz、Logistic和Von Bertalanffy 3种非线性模型对中华蛸体质量和全长的生长进行非线性曲线拟合分析，对中华蛸的生长规律进行了研究。结果显示：在为期50 d的养殖试验中，中华蛸存活率为81.67 %，饲料系数为2.48，平均体质量由初始（107.52 ± 32.31）g增长至(1 779.40 ± 361.56)g，平均全长由(21.57 ± 3.46)cm增长至(71.44 ± 4.84)cm，平均日增量33.44g；胴背长与体质量的拟合方程为W=1.730 3 LM2.563 6，R2=0.985 5，胴背长的增长快于体质量的增加速度；3种曲线模型都能较好地模拟中华蛸体质量和全长的生长曲线，Gompertz模型模拟体质量生长曲线效果最好，拟合度 R2 = 0. 994，拐点体质量为1 454.08 g; Logistic模型模拟全长生长曲线最优，拟合度R2 = 0. 996，拐点全长为44.08 cm；随着胴背长的增加，肥满度呈下降的趋势。本研究表明，小规格中华蛸工厂化养殖生长效果良好，生长速度较快，适合大规模人工养殖。

关键词: 中华蛸, 工厂化养殖, 生长, Gompertz, Logistic, Von Bertalanffy

Abstract:  The growth pattern of Octopus sinensis under industrial aquaculture conditions was explored in this study. The growth data were analyzed and fitted with three kinds of nonlinear models (Gompertz, Logistic, and Von Bertalanffy) and were performed to find the relationship between weight and mantle length. The results showed that the survival rate of O. sinensis was 81.67% and the feed coefficient was 2.48 during the 50 days experimental period. The average body weight increased from 107.52 ± 32.31 g to 1 779.40 ± 361.56 g, the average length increased from 21.57 ± 3.46 cm to 71.44 ± 4.84 cm,and the average daily weight gain was 33.44g /d. The fatness in the early stage was relatively higher. The fitting equation between mantle length and body weight was W=1.730 3 LM2.563 6, R2=0.985 5, indicating that the weight increased faster than the mantle length. Gompertz had the best goodness of fitting weight, and the fitting degree was 0. 994, the inflection of time and the inflection of weight were 32 d and 1 454.08 g.The logistic model fit the growth curve of total length best, and the fitting degree was 0. 997, the inflection of time and the inflection of total length were 22 d and 44.08 cm. The condition factor decreased with the increasing mantle length. The results showed that O. sinensis has good growth performance under industrial aquaculture conditions and is suitable for large-scale artificial culture.

Key words: Octopus sinensis, industrial aquaculture, growth, Gompertz, Logistic, Von Bertalanffy