小鸦鹃消化系统形态学的初步研究  

Tentative Study on the Morphology of Digestive System of Centropus Bengalensis

作　　者：郭振伟[1] 郭延蜀[1] 杨骏[1] 

机构地区：[1]西华师范大学生命科学学院,四川南充637009

出　　处：《西华师范大学学报（自然科学版）》2011年第1期45-48,共4页Journal of China West Normal University(Natural Sciences)

摘　　要：小鸦鹃(Centropus bengalensis)为国家Ⅱ级重点保护鸟类,2009年9月在四川省南充市西华师范大学校园获得一死亡小鸦鹃,本文仅对这一只的消化系统按常规方法进行了解剖,对其形态结构进行了观察,结果表明:小鸦鹃舌呈长三角形,前段尖细有刺毛状结构,后端有一排尖端后指的角质栉状突;食道长为71.96 mm,管径整体不等,前宽后窄,不具嗉囊;肌胃发达;肠道长为体长的86.3%,小肠较发达,长为309.59 mm,占肠道总长的91.5%;具有双侧盲肠,占肠道总长的5.6%;大肠短,占肠道总长的8.5%.肝为体内最大的消化腺,分左右两叶.胰位于十二指肠袢内,细长形,分三小叶.这些特征均以小鸦鹃以昆虫为主食的食性相适应.目前尚未见到小鸦鹃形态学方面的研究报道,本文首次对其消化系统进行解剖观察,为小鸦鹃的生物学研究和保护提供一些形态学方面基础的参考资料.Centropus bengalensis belongs to class Ⅱ nationally protected birds.One died Centropus bengalensis was found in China West Normal University in September 2009.Morphology of its digestive system has been observed preliminarily by naked eyes and dissecting microscope.The results indicated that the tongue was thin with many setae,and many small tuber pointing backside at the rear of the tongue.The length of esophagus was 71.96 mm with out crop.There were a lot of short papillas on the surface of glandular stomach,and a layer of developed horniness covered surface of muscular stomach.The small intestine with 309.59mm in length and 91.5% of the whole length of the intestine was relatively developed.The caecum occupied 5.6% of the whole length of the intestine.The large intestine was short,only occupying 8.5% of the whole intestine.Liver was the biggest digestive gland in the coelom with two parts.The pancreas locating in the flection of the duodenum was thin and long.dividing into three parts.These features of Centropus bengalensis adapt to its feeding habits.In recent years,studies on morphology of Centropus bengalensis have been quite limited.It is the first essay studying morphology of its digestive system,offereing some basic research materials for its protection and biological studies.

关 键 词：小鸦鹃 消化系统 形态学 

分 类 号：Q954[生物学—动物学]