有钩与无钩豆状囊尾蚴头节超微形态的比较

doi:10.11843/j.issn.0366-6964.2016.12.020

摘要/Abstract

摘要：

旨在比较观察有钩和无钩豆状囊尾蚴的头节在相对静止和相对运动时的超微结构变化。在屠宰检验和病理剖检过程中采取发育良好的豆状囊尾蚴，直接剪破囊泡从中取出豆状囊尾蚴；或用含10％兔胆汁生理盐水培养，使囊尾蚴从囊泡中翻出，制作样品，用扫描电镜观察和记录。结果显示：有钩和无钩豆状囊尾蚴在不同状态下的超微结构差异主要出现在顶突。有钩豆状囊尾蚴在相对静止时顶突的前端比较钝，通过皮肌柱与鹿角样的小钩相连。在轻度运动时皮肌柱收缩，小钩向外伸展，顶突前端变扁平。皮肌柱持续收缩时，顶突前端开始内陷，小钩向外斜上方伸展，形成喇叭口样结构。当顶突强烈收缩时，皮肌柱陷入顶突内形成圆筒，小钩沿圆筒口排列形成菊花样结构。无钩豆状囊尾蚴在相对静止时，其顶突扁平，如同数层圆饼叠放在一起，中央有一个圆形结节，周缘有齿轮状花纹。当顶突轻度运动时，中央部的结节内陷，出现瓣状结构，顶突周边形成半圆形环状结构，如同一个救生圈。强烈运动时，结节的瓣状结构打开，如同一个喇叭口。顶突周围的皮层向外张开，恰似轮胎样结构。在顶突的喇叭口与轮胎样结构之间有数条放射状皱襞。顶突变成一个车轮样结构。有钩和无钩豆状囊尾蚴的吸盘均位于顶突之后，可出现三种收缩纹，即环形收缩、纵形收缩和放射状收缩。有钩和无钩豆状囊尾蚴顶突的超微结构完全不同，在不同的运动状态中可出现各自特殊的结构变化。

Abstract:

The aim of the study was to observe comparatively the ultrastructural changes of hook and no-hook cysticercus pisiformis (C. pisiformis) under relative rest and moton. The well-developed C. pisiformis were obtained in the procedure of slaughter inspection and autopsy. The C. pisiformis was taken out by cutting cyst directly, or cultured with normal saline containing 10% rabbit’s bile until evagination. Then samples were made, observed and recorded by scanning electron microscopy. Ultrastructural changes of hook and no-hook C. pisiformis mainly appeared on rostellum. The head end of hook C. pisiformis was relatively dull, and connected antlers-liking hook through cutaneous muscular columns. In the mild movement the cutaneous muscular columns on rostellum contracted, hooks were outward stretch and the head end of rostellum become flat. When cutaneous muscular columns sostenuto contracted, the head end of rostellum began to invaginate, hook outspread toward diagonal upward side and formed bell mouth-like structure. When rostellum powerfully contracted, the cutaneous muscular column got into the rostellum and become a cylinder, hook arranged along cylinder mouth and formed chrysanthemum-like structure. At relative rest the restellum of no-hook C. pisiformis was flat, liking several layers of oblaten stacked together, there was a round nodule in central part and gear-like decorative design on periphery. When rostellum mild exercised the nodule in central part invaginated and presented valvula-like structure, periphery of rostellum had half round cyclic structure and looked like a life buoy. When rostellum was in strong movement, the valvula-like structure of nodule was opened and looked like a bell mouth. Tegument around rostellum expanded toward outside, looking like a tyre structure. There were several radial folds between the bell mouth of rostellum and tyre-like structure. The rostellum turned into wheel-like structure. The suckers of hook and no-hook C. pisiformis were located behind restellum and had three contraction patterns that were annular contraction, longitudinal contraction and radical contraction. Ultrastructural structure of reostellum of hook and no-hook C. pisiformis is totally different and respective special structural changes appear in the different motion state.

中图分类号:

S852.734

潘耀谦，李瑞珍，银梅,唐海蓉,冯春华,张慧辉. 有钩与无钩豆状囊尾蚴头节超微形态的比较[J]. 畜牧兽医学报, 2016, 47(12): 2493-2500.

PAN Yao-qian, LI Rui-zhen, YIN Mei，TANG Hai-rong, FENG Chun-hua, ZHANG Hui-hui. Ultra-morphological Comparative Observation on Scolex of Hook and No-hook Cysticercus pisiformis[J]. ACTA VETERINARIA ET ZOOTECHNICA SINICA, 2016, 47(12): 2493-2500.

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https://www.xmsyxb.com/CN/Y2016/V47/I12/2493

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