| 摘要: |
| [目的]观察并比较短额负蝗(Atractomorpha sinensis)与中华蚱蜢(Acrida cinerea)的胃盲囊形态结构,为深入探讨这2个科昆虫的亲缘关系及验证其进化地位提供新的依据.[方法]对2种蝗虫进行解剖,测量其消化道及胃盲囊各部位长度,用石蜡切片法制作胃盲囊组织切片,比较2种蝗虫胃盲囊的组织结构.[结果]短额负蝗和中华蚱蜢均有6个胃盲囊,但短额负蝗的胃盲囊内壁上突出的纵形嵴较发达,上皮层的消化细胞排列比较整齐紧密,胃盲囊占消化道总长的比例为36.84%;而中华蚱蜢的纵形嵴突出程度相对较轻,消化细胞排列较为疏松, 胃盲囊占消化道总长的比例为24.82%.[结论]短额负蝗的胃盲囊比中华蚱蜢的发达,说明短额负蝗比中华蚱蜢的进化地位低. |
| 关键词: 短额负蝗 中华蚱蜢 胃盲囊 形态结构 |
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| 基金项目:陕西省农业攻关项目（2008K02-10） |
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| A comparison of the gastric cecum of Atractomorpha sinensis and Acrida cinerea(Orthoptera:Acridoidea) |
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| Abstract: |
| 【Objective】 The paper described the systematic observation and comparison of the morphological features of gastric cecum between Acrida cinerea and Atractomorpha sinensis,and a new foundation was provided to discuss possible significance of gastric cecum structures in their phylogenetic relationship. 【Method】 The insect was dissected,and the lengths of alimentary canal of two species’gastric cecum were measured.Then the tissue slices of gastric cecum were done,and the two species’gastric cecum structures were observed and compared. 【Result】 It has been found that there are 6 gastric cecums in both two species,the longitudinal ridges in Atractomorpha sinensis are much more developed,also,the arrangement of Atractomorpha sinensis’s digestive cells is tighter and closer,the percentage of the gastric cecum of Atractomorpha sinensis taking in the length of the alimentary canal is 36.84%,much more than that in Acrida cinerea’s.【Conclusion】 Acrida cinereaand Atractomorpha sinensispossess different morphological features in gastric cecum.The gastric cecum of Atractomorpha sinensis is more developed than Acrida cinerea’s,which means that the evolution status of Acrida cinerea is higher than Atractomorpha sinensi’s. |
| Key words: Atractomorpha sinensis Acrida cinerea gastric cecum morphology and structure |
