Geographic variations in phenotypic traits of the exotic herb Solidago altissima and abundance of recent established exotic herbivorous insects

Journal of plant interactions

article

Yuzu Sakata¹  Takayuki Ohgushi²  Yuji Isagi¹ 

[1] Laboratory of Forest Biology, Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University;Center for Ecological Research, Kyoto University

关键词: Corythucha marmorata;    exotic insects;    hexaploid;    species invasion;    Solidago altissima;    Uroleucon nigrotuberculatum;   

DOI  :  10.1080/17429145.2013.779036

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

Many invasive plants increase aggressiveness after introduction. Since evolutionary forces such as herbivore pressure may change over different time scales, understanding the changes in biotic interactions in invasive plants through time can clarify the mechanism of their evolution in aggressiveness. In this study, we examined the geographic variation in phenotypic traits of Solidago altissima and the abundance of two exotic herbivorous insect species (the aphid, Uroleucon nigrotuberculatum and the lacebug, Corythucha marmorata ), which are recently expanding their habitat on S. altissima populations over Japan. The two exotic insects were present at high density on S. altissima throughout their range. No differences in growth traits (plant height and number of leaves) were found among populations, and all plants examined appear to be exclusively hexaploid. Future studies on population genetics and common garden experiments are necessary to evaluate the potential evolutionary dynamics of the S. altissima after introduction.

【 授权许可】

CC BY|CC BY-NC