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西北太平洋北方拟黵乌贼角质颚色素沉积特性分析
引用本文:陈炫妤,陆化杰,何静茹,刘凯,王洪浩,陈新军.西北太平洋北方拟黵乌贼角质颚色素沉积特性分析[J].水产学报,2021,45(5):682-690.
作者姓名:陈炫妤  陆化杰  何静茹  刘凯  王洪浩  陈新军
作者单位:上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院,上海海洋大学海洋科学学院
基金项目:(NSFC 41506184);国家自然科学基金面上项目(NSFC41876141);浙江省科学技术厅2018年度重点研发计划项目(2018C02026)
摘    要:角质颚是头足类重要的摄食器官,是研究头足类摄食生态的重要材料。为研究北方拟黵乌贼角质颚色素沉积特性,根据2018年9—11月中国鱿钓船在西北太平洋生产调查期间采集的268尾北方拟黵乌贼样本,对其渔业生物学数据进行测定,对其角质颚色素沉积等级进行划分,分析色素沉积等级是否存在性别间差异,并拟合色素沉积等级与胴长、体质量和角质颚外形参数的关系。结果发现,9—11月西北太平洋北方拟黵乌贼角质颚色素沉积等级以6级和7级为主,占样本总数的91.11%。色素沉积与胴长、体质量、角质颚外部形态(上头盖长、上脊突长、上喙长、下头盖长、下脊突长和下喙长)的关系均不存在性别间显著性差异,且均呈正相关,其决定系数R2分别为0.980 0、0.671 5、0.761 5、0.916 5、0.918 8、0.677 2、0.807 1和0.915 3。色素沉积等级与性腺成熟度关系也呈正相关,并随着性腺成熟度等级的增大而增大。研究表明,北方拟黵乌贼角质颚色素沉积等级与胴长、体质量、性腺成熟度和角质颚形态参数均呈正相关关系,总体上随着个体的生长而逐步增加。

关 键 词:北方拟黵乌贼  角质颚  色素沉积  外部形态参数  西北太平洋
收稿时间:2020/5/17 0:00:00
修稿时间:2020/9/10 0:00:00

Analysis of pigmentation characteristics on beak for Gonatopsis borealis in the Northwest Pacific Ocean
CHEN Xuanyu,LU Huajie,HE Jingru,LIU Kai,WANG Honghao,CHEN Xinjun.Analysis of pigmentation characteristics on beak for Gonatopsis borealis in the Northwest Pacific Ocean[J].Journal of Fisheries of China,2021,45(5):682-690.
Authors:CHEN Xuanyu  LU Huajie  HE Jingru  LIU Kai  WANG Honghao  CHEN Xinjun
Institution:Shanghai Ocean University,National Engineering Research Center for Oceanic Fisheries,Shanghai,,,,
Abstract:Abstract: Gonatopsis borealis is a cold water cephalopods species which extensively distributed in the northwest Pacific Ocean during 37°-55°N, and is rich in resources with a good development potentiality. The beak is an important feeding organ of cephalopods, and its pigmentation characteristic is an important material to study the feeding ecology of cephalopods. Objective] In this paper, the characteristics of pigmentation stage in the beak were studied, which would provide the basis for the study of fishery ecology of G. borealis. Method] We measured and identified the sample in basic fishery biology data including mantle length (ML), body weight (BW), sex and sexual maturity, divided the pigmentation stages based on Hernández-García''s method, and established the growth models between the beak pigmentation and ML, BW, sexual maturity and the external morphological parameters of 268 beaks of G. borealis collected in the Northwest Pacific Ocean from September to November of 2018 by Chinese jigging fishing fleets. Result] The results showed that the stage 6 and 7 were the dominant pigmentation stage accounting for 91.11% of the total samples. There was no significantly sexual difference in the relationships between beak pigmentation stages and ML, BW and morphological parameters including Upper hood length (UHL), Upper crest length (UCL), Upper rostrum length (URL), Lower hood length (LHL), Lower crest length (LCL) and Lower rostrum length (LRL) of beaks based on analysis of covariance (ANCOVA). The correlation analysis indicated that the pigmentation degrees of beak were highly significantly correlated with ML and BW. The beak pigmentation degrees had a positive relationship with ML, BW and morphological parameters of beaks, and the coefficient of association were 0.9800, 0.4715, 0.7615, 0.9165, 0.9188, 0.6772, 0.8071 and 0.9153, and there was also a positive relationship with sexual maturity. Conclusion] The pigmentation degrees of beak of G. borealis had a positive relationship with ML, BW, sexual maturity and morphological parameters of beaks, increased with the growth of individuals and seemed to reach the maximum during September to November.
Keywords:Gonatopsis borealis  Beak  Pigmentation stage  morphological parameters  Northwest Pacific Ocean
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