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温度对大绒鼠(Eothenomys miletus)消化道器官变化的影响

发表时间:2012-03-15  浏览量:1115  下载量:323
全部作者: 吴王桥,朱万龙,刘春燕,王政昆
作者单位: 云南师范大学生命科学学院
摘 要: 为研究栖息于横断山地区大绒鼠(Eothenomys miletus)消化器官表型的可塑性变化,对冷、热驯化中大绒鼠消化道各器官指标进行测定,包括胃、小肠、大肠、盲肠长度和重量,以及心脏、肺、肝脏、肾脏、脾脏的重量变化。结果表明:冷驯化组的心脏湿重为0.310 g,肺湿重0.353 g,肝脏湿重1.894 g,小肠湿重0.826 g;热驯化组的心脏湿重为0.203 g,肺湿重0.197 g,肝脏湿重1.473 g,小肠湿重0.632 g. 冷驯化组的心脏湿重、肺湿重、肝脏湿重、小肠湿重显著高于热驯化组(分别为t=2.930,P<0.05;t=2.283,P<0.05;t=2.430,P<0.05;t=2.293,P<0.05)。冷驯化组的小肠长度为39.34 cm,比热驯化组长了13.97%,有显著性差异(P<0.05);而胃、大肠和盲肠长度无显著性差异(P>0.05)。以上结果说明:在低温条件下,大绒鼠主要通过调整小肠长度及增加相关产热器官重量来维持正常的生命活动。�
关 键 词: 生理生态学;大绒鼠;消化道;冷驯化;热驯化
Title: Effects of temperature on digestive tract morphology in Eothenomys miletus
Author: WU Wangqiao, ZHU Wanlong, LIU Chunyan, WANG Zhengkun
Organization: School of Life Sciences, Yunnan Normal University
Abstract: In order to study changes of plasticity of digestive tract morphology in Eothenomy miletus which inhabit in Hengduan mountains region, the digestive tract morphology which includes the length and weight of stomach, small intestine, large intestine, cecum and the changes of weight of heart, lung, liver, kidney and spleen were measured in cold and warm acclimation. The results showed that the wet weight of heart is 0.310 g, lung 0.353 g, liver 1.894 g and small intestine �0.826 g� during the cold acclimation; the wet weight of heart is 0.203 g, lung 0.197 g, liver 1.473 g and small intestine 0.632 g during the warm acclimation. The wet weight of heart, lung, liver and small intestine of cold acclimation group were obviously higher than that of warm acclimation group (which are t=2.930, P<0.05; t=2.283, P<0.05; t=2.430, P<0.05; t=2.293, P<0.05, respectively). The length of the small intestine of cold acclimation group is 39.34 cm which is �13.97%� longer than that of warm acclimation group. All of the results indicated that E. miletus maintain their normal life activities by adjusting the length of small intestine and increasing the weight of related organs under the low temperature.�
Key words: physiological ecology; Eothenomys miletus; digestive tract; cold acclimation; warm acclimation
发表期数: 2012年3月第5期
引用格式: 吴王桥,朱万龙,刘春燕,等. 温度对大绒鼠(Eothenomys miletus)消化道器官变化的影响[J]. 中国科技论文在线精品论文,2012,5(5):451-455.
 
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