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稳定同位素技术在荒漠区啮齿动物食性研究中的应用

Application of Stable Isotope Technique in Research Feeding Habits of Rodents in Desert Region

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【Author in Chinese】 王鑫

【Supervisor】 付和平甘红军

【Author's Information】 内蒙古农业大学, 林业硕士(专业学位), 2017, 硕士

【Abstract in Chinese】 近年来,稳定同位素技术在动物生态学研究中的应用得到迅速发展,特别是在动物食物来源的确定中应用日益普遍。与传统方法相比,稳定同位素技术在研究动物生态学时具有可以反映长期作用的结果、可以研究复杂的生态关系、可以真实的说明问题。本研究总体思路为:通过室内控制测得阿拉善荒漠区4种主要鼠种,三趾跳鼠(Dipus sagitta)、五趾跳鼠(Allactaga sibirica)、子午沙鼠(Meriones meridianus)、小毛足鼠(Phodopus roborovskii)的3种组织-体毛、肝脏、肌肉的δ 13C和δ 15N的分馏系数,根据δ 13C值对阿拉善荒漠区植物进行光合型分类,利用IsoSource模型对主要啮齿动物不同季节的潜在食物源进行分析,通过对2015年和2016年在研究区所采集的动植物标本进行分析,得出如下结论:1.研究区常见植物种隶属于15科、38属共46种植物;根据测试植物叶片的δ13C值,鉴别出有35种C3植物,11种C4植物。2.三趾跳鼠春季主要食物来源贡献率:猪毛菜(Salsola collina)33.4%、无芒隐子草(Cleistogenes songorica)13.8%、蒙古虫实(Corispermum mongolicum)13.3%;夏季主要食物来源贡献率:雾冰藜(Bassia dasyphylla)31.5%、短脚锦鸡儿(Caragana brachypoda)25.1%、骆驼蓬(Peganum harmala)19.8%;秋季主要食物来源所占贡献比例:雾冰藜25.4%、短脚锦鸡儿15.5%、梭梭(Haloxylon ammodendron)14.8%。3.五趾跳鼠春季主要食物来源贡献率:猪毛菜43.2%、雾冰藜21.0%、蒙古虫实20.9%;夏季主要食物来源贡献率:骆驼蓬23.2%、蒺藜(Tribulusterrestris)20.6%、雾冰藜16.2%;秋季主要食物来源贡献率:无芒隐子草27.2%、蒙古虫实24.7%、蛛丝蓬(Micropeplis arachnoidea)18.2%。4.子午沙鼠春季主要食物来源贡献率:雾冰藜17.2%、蒙古虫实17.0%、猪毛菜15.1%;夏季主要食物来源贡献率:雾冰藜28.5%、驼绒藜(Ceratoides intramongolica)21.4%、蛛丝蓬16.4%;秋季主要食物来源贡献率:蛛丝蓬43.0%、猪毛菜 13.3%、霸王(Sarcozygium xanthoxylon)10.7%。5.小毛足鼠秋季主要食物来源贡献率:霸王35.8%、骆驼蓬17.7%、蛛丝蓬13.6%。

【Abstract】 In recent years,the application of stable isotope technology in animal ecology has been developing rapidly,especially in the determination of animal food sources.Compared with the traditonal methods,the stable isotope technique can be used to study the animal ecology,which can reflect the long-term effectand can be used to study the complex ecological relationships.The general idea of the research is:Through the indoor control measured in Alashan desert region four majoy species,Northern three-toed jerboa(Dipus sagitta),Mongolian five-toed jerboa(Allactaga sibirica),Mid-day gerbil(Meriones meridianus),Desert hamster(Phodopus roborovskii)fractionation in 3 kind of tissue-hair,liver and muscle of the δ13C and δ15N,classification of photosynthesis in plants in Alashan desert region based on 13C value,The IsoSource model was used to analyze the potential food sources of major rodents in different seasons.The results are as follows:1.46 species of plants belonging to 15 families and 38 genera were collected in the study area,According to the 13C value of the tested plant leaves,35 C3-plants were identified,and there were 11 C4-plants.2.The contribution rate of main food sources in spring in Northern three-toed jerboa:Salsola collina.33.4%,Cleistogenes songorica.13.8%,Corispermum mongolicum.13.3%.In summer:Bassia dasyphylla.31.5%,Caragana brachypoda.25.1%,Peganum harmala.19.8%.In autumn:Bassia dasyphylla.25.4%.Caragana brachypoda.15.5%,Haloxylon ammodendron.14.8%.3.The contribution rate of main food sources in spring in Mongolian five-toed jerboa:Salsola collina.43.2%.Bassia dasyphylla.21.0%.Corispermum mongolicum.20.9%.In summer:Peganum harmala.23.2%.Tiribulus terrestris.20.6%.Baassia dasphylla.16.2%.In autumn:Cleislogenes songorica.27.2%.Corispermum mongolicum.24.7%.Micropeplis arachnoidea.18.2%.4.The contribution rate of main food sources in spring in Mid-day gerbil:Bassia dasyphylla.17.2%.Corispermum mongolicum.17.0%.Salsola collina.15.1%.In summer:Bassia dasyphylla.28.5%,Ceratoides inlramongolica.21.4%.Micropeplis arachnoidea.16.4%.In autumn:Micropeplis arachnoidea.43.0%.Salsola collina.13.3%,Sarcozygium xanthoxylon,10.7%.5.The contributionrate of main food sources in autumn in Desert hamster:Sarcozygium xanthoxylon.35.8%,Peganum harmala.17.7%,Micropeplis arachnoidea.13.6%.

  • 【CLC code】Q958
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