3种荔枝螺齿舌的扫描电镜观察  

Scanning Electron Microscopic Observation of Radulae in Three Thais Species

作　　者：陈志云[1] 尤仲杰[1,2] 

机构地区：[1]宁波大学生命科学与生物工程学院,浙江宁波315211 [2]宁波市海洋与渔业研究院,浙江宁波315012

出　　处：《水产科学》2009年第3期153-155,共3页Fisheries Science

摘　　要：利用扫描电镜对3种荔枝螺属种类-疣荔枝螺、黄口荔枝螺和瘤荔枝螺的齿舌进行观察。结果表明,荔枝螺齿式为0∶1∶1∶1∶0,即中央齿1枚,侧齿2枚,无缘齿。中央齿三分叉,中央齿尖长,其中黄口荔枝螺中央齿尖较其他2种略宽、短;两侧齿尖内侧各有1个小齿,其外侧具数量不等的小齿。侧齿细长,镰刀状,齿尖朝向与中央尖齿相同,其种间形态无明显变化。3种荔枝螺齿舌形态主要区别为中央齿两侧齿尖外侧小齿数目,其中疣荔枝螺小齿数最少,为5枚,瘤荔枝螺最多,为9-10枚,黄口荔枝螺为8-9枚。The radulae in three species of Thais（Gastropoda： Muricidae）, Thais clavigera （Ktister）, T. luteostoma and T. bronni were observed with scanning electron microscope（SEM）. The radulae bear many transverse rows of teeth with dentition formula 0 ： 1 ： 1 ： 1 ： 0. There are three teeth in a transverse row that are a rhachidian, central cusp with simple, long, and sharply pointed and a pair of lateral teeth. The side cusps are about half or two thirds as long as the central cusp and a denticle, prominent, and sharp or blunt inside while several small denticles are outside, even some climb. Marginal denticles inside are higher and broader than denticles itself. The laterals are simple and faleiform without remarkable interspecifie differences. There are significant differences in the amount of the denticles outside the side cusps of the rhaehidian in the three species： T. clavigera has 5 dentieles, T. luteostoma 8 or 9 and T. bronni 9 or 10.

关 键 词：疣荔枝螺 黄口荔枝螺 瘤荔枝螺 齿舌 扫描电镜 

分 类 号：Q954.58[生物学—动物学]