作者: Michael C. Rotter , Mario Vallejo-Marin , Liza M. Holeski
DOI: 10.1007/S10682-019-10004-5
关键词: Mimulus guttatus 、 Ecology 、 Biology 、 Herbivore 、 Animal ecology 、 Evolutionary ecology 、 Range (biology) 、 Native plant 、 Plant species 、 Resistance (ecology)
摘要: Non-native plant species invasions can have significant ecological and economic impacts. Finding patterns that predict explain the success of non-native has thus been an important focus in invasion ecology. The evolution increased competitive ability (EICA) hypothesis a frequently used framework to understand success. Evolution predicts (1) populations will escape from coevolved specialist herbivores were present within native range this release should result relaxed selection pressure on specialist-related defense traits, (2) there be trade-off between allocation resources for resistance against traits related ability, (3) shift allow more traits. We tested predictions EICA model Mimulus guttatus, western North America (WNA). compared how well fit two regions, United Kingdom (UK), older successful invasion, eastern (ENA), younger less invasion. completed extensive herbivore surveys grew plants derived multiple each region common greenhouse environment test adherence EICA. found evidence UK, but not ENA plants. Compared UK had lower levels taller, produced larger flowers, while mostly equivalent WNA Plants conformed closely than those ENA. is older, suggesting support may highest invasions.