霍莉莉,南泽,侯纯强,牟宗宝,郑小东

• 1:中国海洋大学海洋生物多样性与进化研究所
• 2:海水养殖教育部重点实验室(中国海洋大学)
• 3:天津市水产研究所
• 4:獐子岛集团股份有限公司

摘要(Abstract)：

为研究黄、渤海海域内长蛸(Octopus minor)的不同地理群体的形态多样性。采集了天津、秦皇岛、丹东、木浦、群山5个长蛸群体共116个体,采用多元分析方法综合分析了其15个形态学指标,建立了群体的判别函数。研究表明:长蛸群体的腕式均为1>2>3>4,腕间膜式为A>B>C>D>E(其中阿拉伯数字代表长蛸的4对腕长;英文字母代表长蛸的5组腕间膜长)。性状相关性分析表明,重量性状与胴体部性状、胴体部性状与头部性状和漏斗性状之间存在极显著的相关性(P<0.01)。主成分分析将体尺性状划分为两个主成分,累计贡献率达72.041%,表明适宜用几个相互独立的因子来解释不同长蛸群体间的差异性。逐步判别分析方法建立5个群体的判别函数,判别准确率P_1为69.6%～100%,P_2为80.0%～100%,综合判别准确率为90.5%,根据判别函数散点图可清晰地将韩国群体(木浦和群山)与中国群体(天津、秦皇岛和丹东)区分开。单因素方差分析显示,韩国群体(木浦和群山)与中国群体(天津、秦皇岛和丹东)之间腕吸盘数目存在显著差异性(P<0.05),天津和秦皇岛群体间腕吸盘数目最接近。聚类分析将5个群体分为2支,天津和秦皇岛群体先聚于一支,再与丹东群体聚于一支,木浦和群山群体单独聚于一支。研究结果表明,黄渤海长蛸群体形态存在地域差异。

关键词(KeyWords)： 长蛸;地理群体;形态多样性;群体差异;多元分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(31672257);; 中央高校基本科研业务费专项(201822022)资助~~

作者(Author): 霍莉莉,南泽,侯纯强,牟宗宝,郑小东

DOI: 10.16441/j.cnki.hdxb.20200097

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