| Title: | Warming neutralizes host-specific competitive advantages between a native and invasive herbivore |
| Address: | "Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, Taiwan. Australian Research Council Centre of Excellence for Environmental Decisions, University of Melbourne, Melbourne, Australia. Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei, Taiwan. ckho@ntu.edu.tw. Department of Life Science, National Taiwan University, Taipei, Taiwan. ckho@ntu.edu.tw" |
| DOI: | 10.1038/s41598-018-29517-0 |
| ISSN/ISBN: | 2045-2322 (Electronic) 2045-2322 (Linking) |
| Abstract: | "Although native-invasive species interactions have become a common mechanism shaping ecosystems, whether these interactions shift under warming remains unclear. To investigate how warming may affect native and invasive species separately and together (intraspecific and interspecific competition, respectively) and whether any warming impact is resource dependent, we examined the performance of two competing herbivores (native Pieris canidia and invasive P. rapae) on two common host plants under three temperature settings (control, 3 degrees C, and 6 degrees C warming using environmental chambers). The results revealed that warming benefited the development and growth of both Pieris under intraspecific competition, but the benefits were host-plant dependent. Notably, the native or invasive Pieris gained an advantage from interspecific competition (host-plant dependent), but warming neutralized the competitive advantages of either Pieris species. These findings raise the possibility that warming-induced shifts in competitive status may become a crucial mechanism shaping ecosystems worldwide, because most ecosystems are challenged by species invasion and warming. Moreover, this study revealed a discrepancy in species thermal performance between intra- and interspecific competition. Therefore, to predict native-invasive species competition under warming, current thermal performance applications should use species performance curves derived from interspecific rather than intraspecific competition studies (although the latter is more readily available)" |
| Keywords: | Animals Competitive Behavior/*physiology *Ecosystem Herbivory/*physiology Host-Pathogen Interactions/physiology Introduced Species Lepidoptera/*physiology Plants; |
| Notes: | "MedlineLin, Zheng-Hong Wu, Chung-Huey Ho, Chuan-Kai eng 105-2621-B-002-001/Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)/International 106-2313-B-002-002/Ministry of Science and Technology, Taiwan (Ministry of Science and Technology of Taiwan)/International N/A/National Taiwan University (NTU)/International Research Support, Non-U.S. Gov't England 2018/07/26 Sci Rep. 2018 Jul 24; 8(1):11130. doi: 10.1038/s41598-018-29517-0" |
