Decreased resistance and increased tolerance to native herbivores of the invasive plant Sapium sebiferum
نویسندگان
چکیده
J. Zou ([email protected]), Dept of Ecology and Evolutionary Biology, Rice Univ., Houston, TX 77005, USA. (Present address of J. Z.: College of Resources and Environmental Sciences, Nanjing Agricultural Univ., Nanjing 210095, China.) E. Siemann, W. E. Rogers and S. J. DeWalt, Dept of Ecology and Evolutionary Biology, Rice Univ., Houston, TX 77005, USA. (Present address of W. E. R.: Dept of Ecosystem Science and Management, Texas A&M Univ., TX 77843, USA, present address of S. J. D.: Dept of Biological Sciences, Clemson Univ., Clemson, SC 29634, USA.)
منابع مشابه
Effects of simulated herbivory and resources on Chinese tallow tree (Sapium sebiferum, Euphorbiaceae) invasion of native coastal prairie.
Trade-offs associated with maintaining herbivory resistance and herbivory tolerance are frequently inferred in plant life histories. Invasive success for many non-native plants is often attributed to novel resistance that repels native herbivores. Chinese tallow tree (Sapium sebiferum, Euphorbiaceae) is a non-native invader that threatens ecosystems throughout the southeastern United States, in...
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The introduced tree, Sapium sebiferum, is a serious invader throughout the southeastern United States. Low herbivore loads, commonly attributed to high herbivore resistance, are assumed to give Sapium a competitive advantage over native vegetation. Because herbivory resistance is considered energetically expensive, we predicted that if Sapium experienced higher levels of damage its growth would...
متن کاملInvasive ecotypes tolerate herbivory more effectively than native ecotypes of the Chinese tallow tree Sapium sebiferum
1. The evolution of increased competitive ability (EICA) hypothesis proposes that exotic plants often become invasive because they have evolved reduced allocation to defence and increased allocation to growth and reproduction in response to low herbivore loads. Previous studies with Chinese tallow tree Sapium sebiferum support EICA predictions of invasive North American ecotypes displaying rapi...
متن کاملDifferences in morphological and physiological traits between native and invasive populations of Sapium sebiferum
1. Functional traits contribute to the success of invasive plants. These traits can reflect inherent properties or they can be new adaptations from evolutionary responses to escape from natural enemies of the introduced range. We tested the hypothesis that genetic shifts in morphological and physiological traits have occurred between native and invasive populations of Sapium sebiferum . 2. Sapi...
متن کاملPlasticity of Sapium sebiferum seedling growth to light and water resources: Inter- and intraspecific comparisons
Two main hypotheses have been posed to explain the role of phenotypic plasticity in the invasive success of exotic plants: (1) invasive species may be more plastic than resident species in the introduced range, and (2) invasive populations of an exotic species may be more plastic relative to native populations due to evolutionary changes after introduction. To test the first hypothesis, we cond...
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تاریخ انتشار 2008