Stable carbon isotope evidence for tracing the diet of the host Hepialus larva of Cordyceps sinensis in the Tibetan Plateau  

作　　者：CHEN Di YUAN JianPing XU ShiPing ZHOU XiaoGang ZHANG Yan XU XiaoMing ZOU ZhiWen ZHANG GuRen WANG JiangHai 

机构地区：[1]State Key Laboratory of Bio-control,College of Life Sciences,Sun Yat-Sen University,Guangzhou 510275,China [2]School of Marine Sciences,Sun Yat-Sen University,Guangzhou 510006,China [3]State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China [4]R&D Center,Guangzhou Enenta Electrical Equipment Co.,Ltd,Guangzhou 510635,China

出　　处：《Science China Earth Sciences》2009年第5期655-659,共5页中国科学（地球科学英文版）

基　　金：Supported by the National Key Technology R & D Program (Grant No. 2007BAI32B05)

摘　　要：Two types of Hepialus larvae with different diets were distinguished in the Sejila Mountain,Tibetan Plateau based on the stable carbon isotope data of the host Hepialus larva of Cordyceps sinensis and its closely adjacent tender plant roots and humus fractions.Type I is the larva chiefly fed by soil humus,and characterized by the δ 13C values of -22.6‰ to-23.4‰,and more than -23.4‰ in its heads.Type II is the larva chiefly fed by tender plant roots,and characterized by the δ 13C values of-24.6‰ to -27.6‰,and less than -24.6‰ in its heads.Our result has exceeded the traditional understanding that their food sources only come from the tender plant roots,and may provide evidence for choosing cheap and high-quality foods and further establishing artificial habitats in their large-scale reproduction.Two types of Hepialus larvae with different diets were distinguished in the Sejila Mountain, Tibetan Plateau based on the stable carbon isotope data of the host Hepialus larva of Cordyceps sinensis and its closely adjacent tender plant roots and humus fractions. Type I is the larva chiefly fed by soil humus, and characterized by the δ 13C values of ?22.6‰ to ?23.4‰, and more than ?23.4‰ in its heads. Type II is the larva chiefly fed by tender plant roots, and characterized by the δ 13C values of ?24.6‰ to ?27.6‰, and less than ?24.6‰ in its heads. Our result has exceeded the traditional understanding that their food sources only come from the tender plant roots, and may provide evidence for choosing cheap and high-quality foods and further establishing artificial habitats in their large-scale reproduction.

关 键 词：stable carbon ISOTOPES HOST HEPIALUS larva of CORDYCEPS SINENSIS HUMUS substances Tibetan Plateau 

分 类 号：P597.2[天文地球—地球化学]