Effect of the specialist herbivore Luehdorfia puziloi on the performance of a woodland herbaceous plant, Asarum heterotropoides
Effect of the specialist herbivore Luehdorfia puziloi on the performance of a woodland herbaceous plant, Asarum heterotropoides
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DOI：
10.1111/j.1442-1984.2009.00263.x
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发表时间：
2010-04-01
影响因子：
1.4
通讯作者：
Ohara, Masashi
中科院分区：
文献类型：
--
作者：
Ishizaki, Satomi;Narumi, Tadashi;Ohara, Masashi
植物对昆虫造成的植食性损害表现出多种反应。我们调查的专业叶食草动物Luehdorfia puziloi的落叶林林下多年生草本植物细辛的性能的影响。本试验在生长前期（开花期：5月上旬）和生长后期（自然取食时）进行了不同伤害程度（0、50和100%剪叶）的人工落叶试验。puziloi幼虫发生：6月初）在自然种群。去叶处理对黑穗醋栗繁殖（结实率）的影响。调查了处理年份的异冬菊的生长情况以及处理年份对植株存活和生长的影响。在早期进行的严重落叶导致当年的种子产量减少，并增加了下一年的休眠或非生殖阶段的回归，这将降低未来开花的可能性。相反，在后期进行的去叶对A.异形体后期受害叶面积与结实率无明显相关性。我们的研究结果表明，专家草食动物L。puziloi对A.在植物能够耐受损害的季节晚些时候，通过损害植物来破坏heterotropoides。
Plants show many responses to herbivore damage caused by insects. We investigated the effect of the specialist leaf herbivore Luehdorfia puziloi on the performance of a deciduous forest understory perennial herb Asarum heterotropoides. We conducted artificial defoliation experiments with different levels of damage (0, 50 or 100% clipping) in the early growing period (flowering time: early May) and in the late growing period (when natural herbivory by L. puziloi larvae occurs: early June) in a natural population. Effects of the defoliation treatments on reproduction (seed-set ratio) of A. heterotropoides in the treated year and on survival and development of the plant in the subsequent year were investigated. Severe defoliation conducted in the early period resulted in less current-year seed production and increased regression to a dormant or non-reproductive stage in the following year, which would reduce the probability of future flowering. In contrast, defoliation conducted in the late period had no effect on the reproduction, survival and development of A. heterotropoides. Similarly, we found no obvious correlation between the damaged leaf area during the later period and seed set. Our results show that the specialist herbivore L. puziloi did not influence the performance of A. heterotropoides by damaging the plant later in the season when it was tolerant of damage.