海洋软体动物齿舌中磁铁物的研究  

STUDY ON THE MAGNETITE IN THE RADULA OF MARINE MOLLUSC

作　　者：刘传琳[1] 崔龙波[1] 赵见高[2] 刘兴杰 

机构地区：[1]烟台大学生化系,烟台264005 [2]中科院物理所磁学国家重点实验室,北京100080 [3]烟台福山区职业中专,烟台255000

出　　处：《生物物理学报》1999年第4期775-779,共5页Acta Biophysica Sinica

基　　金：国家自然科学基金

摘　　要：在扫描电镜下对红条毛肤石鳖（ Ａｃａｎｔｈｏｃｈｉｔｏｎ ｒｕｂｒｏｌｉｎｅａｔｕｓ Ｌｉｓｃｈｋｅ） 齿舌进行了观察，用原子力和磁力显微镜及超导量子干涉器（ＳＱＵＩＤ） 式磁强计对齿舌中的磁铁物Ｆｅ３ Ｏ４ 进行了分析和测量，实验证明齿舌中含有磁铁物Ｆｅ３ Ｏ４ ，每个齿舌约含Ｆｅ３ Ｏ４ ０．２ ｍｇ ，占齿舌重量的１５ ％ ，矿物重量的４０％ ，磁化强度约为０．０２×１０ － ３ Ａｍ２／ 个，相当于１４Ａｍ２／ｋｇ ，并且磁铁物主要存在于第一侧齿的齿尖上，同时Ｆｅ３ Ｏ４ 晶体在齿片表面上的排列及磁畴结构具有方向性。Some marine molluscs can bio-synthesize magnetite Fe3O4. One of these organisms is the chiton Acanthochiton rubrolineatus Lischke. It deposites magnetite in the first lateral tooth of the radula, and magnetite is mostly localized in the tricuspid shaped cusp. Under Scaning Electron Microscope(SEM), the radula was observed and the magnetite in the radula was measured with Atomic Force and Magnetic Force Microscope and Superconducting Quantum Interference Device magnetometer(SQUID). Each radula contents 0.2mg magnetite,which is 15%weight of a dried radula, about 40% weight of minerals, and the magnetization reaches about 0.02×10-3Am2,equivalent to 14 Am2/kg.The magnetite distributing and magnetic domain structure in the first lateral tooth shows directive.

关 键 词：红条毛肤石鳖 齿舌 磁铁物 

分 类 号：Q585[生物学—生物化学] Q959.63