Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quercus variabilis
Seed-hoarding of Edward's long-tailed rats Leopoldamys edwardsi in response to weevil infestation in cork oak Quercus variabilis
复制标题
DOI：
10.1093/czoolo/57.1.50
复制
发表时间：
2011-01-01
期刊：
影响因子：
2.2
通讯作者：
Zhang, Hongmao
中科院分区：
文献类型：
--
作者：
Cheng, Jinrui;Zhang, Hongmao
种子贮藏者对受昆虫侵害的种子表现出不同的贮藏和进食反应，这些反应会影响种子和昆虫的适合度。目前还不清楚种子囤积者如何采取不同的策略，在吃和囤积有幼虫和没有幼虫隐藏在里面的种子。在这里，我们调查囤积和进食爱德华的长尾大鼠Leopoldamys edwardsi（分散囤积者）象鼻虫感染的软木栎栎种子在室外围栏内的反应。我们提供了健全的种子，幼虫出现的种子，（幼虫已经出现的受感染的种子）和幼虫隐藏的种子（幼虫隐藏在里面的受感染的种子）的主题独立（每种种子类型单独提供）和成对组合（健全和幼虫出现的种子;健全和幼虫隐藏的种子）。我们发现L.爱德华氏移走，分散囤积和吃少幼虫出现的种子比健全的种子。健全种子和幼虫隐匿种子之间没有差异。这些结果表明，健康和幼虫隐藏的种子更受L。edwardsi比幼虫出现的种子。我们认为，在自然条件下，不仅植物，而且昆虫也可能受益于囤积者对种子侵扰的行为反应[Current Zoology 57（1）：50-55，2011]。
Seed hoarders show different hoarding and eating responses towards insect-infested seeds that can affect the fitness of both the seeds and insects. It remains unclear how seed hoarders adopt different strategies in eating and hoarding infested seeds with and without larvae concealed inside. Here we investigated hoarding and eating responses of Edward's long-tailed rats Leopoldamys edwardsi (scatter hoarders) to weevil infestation of cork oak Quercus variabilis seeds within outdoor enclosures. We provided sound seeds, larvae-emerged seeds, (infested seeds where larvae have emerged) and larvae-concealed seeds (infested seeds with larvae concealed inside) to subjects independently (each seed type presented separately) and in pairwise combinations (sound and larvae-emerged seeds; sound and larvae-concealed seeds). We found that L. edwardsi removed, scatter hoarded and ate fewer larvae-emerged seeds than sound seeds. No difference was found between sound seeds and larvae-concealed seeds. These results suggest that sound and larvae-concealed seeds are more favored by L. edwardsi than larvae-emerged seeds. We posit that not only plants but also insects may benefit from the behavioral responses of hoarders to seed infestation under natural conditions [Current Zoology 57 (1): 50-55, 2011].