文章摘要
头足类角质颚色素沉着机制研究
Mechanism analysis of cephaopod beak pigmentation
投稿时间:2018-11-04  修订日期:2019-10-01
DOI:
中文关键词: 角质颚  色素沉积  化学成分  C/N比值
英文关键词: beak  pigment  chemical composition  C/N ratio
基金项目:国家自然科学基金
作者单位E-mail
林静远 上海海洋大学海洋科学学院 1045703396@qq.com 
刘必林 上海海洋大学海洋科学学院 bl-liu@shou.edu.cn 
金宵 华东理工大学材料科学与工程学院  
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中文摘要:
      角质颚是头足类重要的摄食器官,其表面具有特殊的色素沉着。本文分析了角质颚色素沉着程度不同的3种头足类(剑尖枪乌贼、茎柔鱼、曼氏无针乌贼),以及茎柔鱼角质颚色素沉着程度不同部位(喙部、侧壁、翼部)的主要化学成分以及碳稳定同位素比。研究结果显示,茎柔鱼角质颚不同部位的蛋白质与儿茶酚含量是喙部>侧壁>翼部,而C/N比值是翼部>侧壁>喙部;三种头足类角质颚中蛋白质与儿茶酚含量是曼氏无针乌贼>茎柔鱼>剑尖枪乌贼,而C/N比值是剑尖枪乌贼>茎柔鱼>曼氏无针乌贼。茎柔鱼角质颚各部位壳聚糖含量与C/N值呈显著正相关(P<0.001),各部位蛋白质含量与C/N值呈显著负相关(P<0.001);三种头足类角质颚C/N随壳聚糖含量增大而增大,C/N随蛋白质含量增大而减小。角质颚C/N增大,则几丁质含量高,蛋白质含量低,对应色素沉积变浅;C/N减小,则几丁质含量低,蛋白质含量高,对应色素沉积变深。
英文摘要:
      Cephalopod beaks, a major feeding structure, is characterized by special formation of pigment . In this study, we analyzed the main chemical composition and carbon-nitrogen stable isotope ratio of whole beaks of three species and beaks different parts of D. gigas with different pigment formation.The results showed that the protein and catechol content in different parts of the beaks were observably different (P<0.001) with rostrum> lateral wall> wing, and the C/N ratio is wing>lateral wall> rostrum. The protein and catechol content of three cephalopods were observably different (P<0.001) with Sepiella maindroni > Dosidicus gigas > Uroteuthis edulis, and the C/N ratio is U. edulis > D. gigas > S. maindroni. There was a significant positive correlation between chitosan content and the C/N value in different parts of D. gigas’s beaks (P<0.001). There was a significant negative correlation between protein content and C/N value (P<0.001). The C/N of three cephalopods increased with the increasing of chitosan contentand the C/N decreased with the increasing of protein content. When the C/N increased, the chitin content was high, the protein content was low and the corresponding pigment became shallow, while when the C/N decreased, the chitin content was low, the protein content was high and the pigment is deep.
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