短期禁食和重喂食对不同地区大绒鼠下丘脑神经肽表达量和行为的影响  

Effects of short-term fasting and refeeding on hypothalamic neuropeptides expressions and behavior in Eothenomys miletus from different regions

作　　者：任晓英 刘春燕[1] 侯东敏 朱万龙[1,2,3] REN Xiao-ying;LIU Chun-yan;HOU Dong-min;ZHU Wan-long(Key Laboratory of Ecological Adaptive Evolution and Conservation on Animals-Plants in Southwest Mountain Ecosystem of Yunnan Province Higher Institutes College,School of Life Sciences,Yunnan Normal University,Kunming 650500;Engineering Research Center of Sustinable Development and Utilization of Biomass Energy Ministry of Education,Kunming 650500;Key Laboratory of Yunnan Province for Biomass Energy and Environment Biotechnology,650500;Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming 650223,China)

机构地区：[1]云南省高校西南山地生态系统动植物生态适应进化及保护重点实验室云南师范大学生命科学学院,昆明650500 [2]生物能源持续开发利用教育部工程研究中心,昆明650500 [3]云南省生物质能与环境生物技术重点实验室,昆明650500 [4]中国科学院昆明动物研究所,昆明650223

出　　处：《生物学杂志》2020年第5期66-70,共5页Journal of Biology

基　　金：国家自然科学基金项目(31760118,31560126);云南省中青年学术和技术带头人后备人才项目(2019HB013)。

摘　　要：当环境发生变化(如食物资源波动),动物的体重和行为模式会随之改变。栖息在不同地区同种动物的体重调节可能会存在地理差异。对横断山香格里拉和剑川两个地区大绒鼠在短期内禁食和重喂食的生理指标差异进行了测定。结果表明:短期禁食对大绒鼠的体重、摄食量、血清瘦素含量、下丘脑神经肽表达量和活动行为的影响差异极显著。香格里拉地区大绒鼠体重和血清瘦素含量显著低于剑川地区,摄食量和活动行为显著高于剑川地区。除血清瘦素含量外,重喂食7 d后两地大绒鼠的各生理指标可以恢复到对照水平,表现出极大的表型可塑性。以上结果表明大绒鼠在不同生境中其体重、摄食量、血清瘦素含量、下丘脑神经肽表达量和活动行为差异显著,这可能和其栖息的环境气候、食物等因子差异有关。Body mass and behavior patterns of animals change accordingly when the environment variations(such as fluctuations in food resources).There may be geographic differences in body mass regulation of one species inhabiting different regions.In the present study,the differences of physiological indices in Eothenomys miletus under fasting and re-feeding in a short time between Xianggelila(XGLL)and Jianchuan(JC)were measured.The results showed that significant effects of short-term fasting on body mass,food intake,serum leptin content,hypothalamic neuropeptide expressions and activity behavior were found in E.miletus.Body mass and serum leptin levels of E.miletus in XGLL were significantly lower than those in JC,and food intake and activity behavior were significantly higher than those in JC.Excluding the serum leptin levels,the physiological indexes of the E.miletus in two areas could restore to the control level after 7 days of re-feeding,showing greater phenotypic plasticity.All of the results suggested that there were significant differences in body mass,food intake,serum leptin levels,hypothalamic neuropeptide expression and activity behavior between different habitats,which might be related to the differences of environmental climate and food resource factors.

关 键 词：大绒鼠 短期禁食 重喂食 下丘脑神经肽表达量 活动行为 

分 类 号：Q95[生物学—动物学]