首页 | 本学科首页   官方微博 | 高级检索  
   检索      

啮齿动物鉴别虫蛀种子的能力及其对坚果植物更新的潜在影响
引用本文:肖治术,张知彬,王玉山.啮齿动物鉴别虫蛀种子的能力及其对坚果植物更新的潜在影响[J].兽类学报,2003,23(4):312-321.
作者姓名:肖治术  张知彬  王玉山
作者单位:中国科学院动物研究所农业虫鼠害综合治理国家重点实验室,北京,100080
基金项目:keyprojectofCNSF (G2 0 0 0 0 4680 2 ),theinnovationprogramsofCAS (KSCX2 -SW -10 5andKSCX -SW -10 3 )
摘    要:作为种子捕食和种子扩散,啮齿动物对产坚果植物的自然更新有很大作用。然而,对啮齿动物鉴别虫蛀种子的能力颇有争议。2001年秋季在中国四川都江堰市实验林场,以3种比例(I1:S=1:1,I1:S=4:1和I1:I2:S=1:1:1)供给啮齿动物4种壳斗科种子:栓皮栎(Quercus variabilis)、枹树(Q.serrata)、青冈(Cyclobalanopsis glauca)和栲树(Castanopsis fargesii)的3种坚果型(即饱满种子(S),不含象虫的虫蛀种子(I1)和含象虫的虫蛀种子(I2)验证了啮齿动物能够准确地鉴别虫蛀种子这一假说。结果表明,在3种比例下4种坚果的虫蛀种子的消失速率均慢于饱满种子。即使虫蛀种子的比例增加,啮齿动物显地搬走了更多的饱满种子(67%~92%)。当虫蛀种子的比例增加时,虫蛀种子就地消耗和拒绝的比例降低,搬走比例增加。啮齿动物并不拒绝虫蛀种子,这可能与它们的可利用性(如象虫可以作为蛋白质的补充)和数量以及它们的觅食行为有关。结果证实啮齿动物能准确地鉴别虫蛀种子,从而有区别地搬走并贮藏更多的饱满种子,消耗一部分可以利用的虫蛀种子(包括其内的象虫)。这样,啮齿动物通过对饱满种子和虫蛀种子的鉴别和选择会影响不同种子的命运,从而对这些坚果植物的自然更新产生影响。

关 键 词:啮齿动物  虫蛀种子  坚果植物  更新  壳斗科  象虫  都江堰

Rodent's Ability to Discriminate Weevil-Infested Acorns:Potential Effects on Regeneration of Nut-Bearing Plants
XIAO ZhishuZHANG ZhibinWANG Yushan.Rodent''''s Ability to Discriminate Weevil-Infested Acorns:Potential Effects on Regeneration of Nut-Bearing Plants[J].Acta Theriologica Sinica,2003,23(4):312-321.
Authors:XIAO ZhishuZHANG ZhibinWANG Yushan
Institution:XIAO ZhishuZHANG Zhibin~*WANG Yushan
Abstract:Rodents, as both seed predators and seed dispersers, influence natural regeneration of nut-bearing species. Rodents′ ability to discriminate insect-infested seeds was often debated. By offering seed-eating rodents three acorn types (sound acorns, weevil-infested acorns with or without weevils) of four fagaceous species (Quercus variabilis, Q. Serrata, Cyclobalanopsis glauca, and Castanopsis fargesii) with different ratios in an experimental forest farm of Dujiangyan City, Sichuan Province, China, during the autumn of the year 2001. This study was carried out to test the hypothesis whether seed-eating rodents have the ability to discriminate infested seeds. The disappearance of infested acorns was slower than that of sound acorns for all species of all ratios. Rodents significantly removed more sound acorns than infested acorns of all species (67%-92%), even when the proportion of infested acorns increased. When the ratio of infested acorns increased, the consumed and rejected proportions of infested acorns decreased while the removal rate increased. Seed-eating rodents do not always reject infested acorns, which might be related to acorn availability and quantity as well as to rodents′ foraging strategies. The results demonstrate that seed-eating rodents discriminate infested acorns accurately, and differentially remove and cache most of sound acorns and consume infested acorns (including weevils). This may affect the fates of sound and infested acorns and then influence natural regeneration of these nut-bearing species.
Keywords:Small rodents  Regeneration  Fagaceae  Weevils  Dujiangyan
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号