中国寄生虫学与寄生虫病杂志 ›› 2011, Vol. 29 ›› Issue (2): 17-104-106.

• 研究简报 • 上一篇    下一篇

兴义维蚋成熟幼虫消化道组织学研究

寻慧,杨明*,吴慧,陈汉彬   

  1. 贵阳医学院生物学教研室,贵阳 550004
  • 出版日期:2011-04-30 发布日期:2012-09-27

Histology of the Alimentary Canal in Mature Larva of Simulium (Wilhelmia) xingyiense Chen and Zhang (Diptera︰Simuliidae)

XUN Hui,YANG Ming*,WU Hui,CHEN Han-bin   

  1. Department of Biology,Guiyang Medical College,Guiyang 550004,China
  • Online:2011-04-30 Published:2012-09-27

摘要: 应用石蜡连续切片技术对兴义维蚋成熟幼虫(具鳃斑)消化道的组织学结构进行研究。其消化道由前肠、中肠和后肠等3部分组成。前肠分为咽、食道和前胃,口内侧上方内陷形成一对形状不规则的上唇腺,咽前段存在骨化食窦,食道内陷形成套管样前胃。中肠以4个大型胃盲囊为起点,根据肠壁细胞形态差异分为3个区域。后肠由幽门、回肠和直肠组成,回肠与直肠结构差异明显。4条马氏管从中肠与后肠的分界处分出。纺织腺形态特异。

关键词: 兴义维蚋, 幼虫, 消化道, 组织学

Abstract: The histology of alimentary canal of Simulium (Wilhelmia) xingyiense mature larva (with gill spots) was investigated by using paraffin serial section. The alimentary canal is composed of foregut, midgut and hindgut. The foregut includes pharynx, esophagus and proventriculus. The up-inside of buccal cavity invaginates to form the labral gland with irregular shape. Ossified cibarium exist in anterior pharynx. Canular proventriculus forms by the invagination of esophagus. The midgut begins with four big gastric caeca, and divides into three regions according to the epithelium cell shape. The hindgut consists of pylorus, ileum and rectal. The structure of the ileum is different from rectal. Four malpighian tubules diverge from the boundary between midgut and hindgut. The structure of silk duct is special.

Key words: Simulium (Wilhelmia) xingyiense, Larva, Alimentary canal, Histology