Herbivores on native and exotic
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چکیده
منابع مشابه
Opposing effects of native and exotic herbivores on plant invasions.
Exotic species are widely assumed to thrive because they lack natural enemies in their new ranges. However, a meta-analysis of 63 manipulative field studies including more than 100 exotic plant species revealed that native herbivores suppressed exotic plants, whereas exotic herbivores facilitated both the abundance and species richness of exotic plants. Both outcomes suggest that plants are esp...
متن کاملComment on "Opposing effects of native and exotic herbivores on plant invasions".
Parker et al. (Reports, 10 March 2006, p. 1459) showed that native herbivores suppress exotic plants more than native plants. Further analysis reveals that the effect of native herbivores is reduced on exotic plant species that are closely related to native species in the invaded region. Exotic plants may share traits with native congeners that confer similar resistance to resident herbivores.
متن کاملBiotic resistance to plant invasions? Native herbivores prefer non-native plants
John D. Parker and Mark E. Hay* School of Biology, Georgia Institute of Technology, Atlanta, GA 30332–0230, USA *Correspondence: E-mail: [email protected] Abstract In contrast to expectations of the enemy release hypothesis, but consistent with the notion of biotic resistance, we found that native generalist crayfishes preferred exotic over native freshwater plants by a 3 : 1 ratio wh...
متن کاملHerbivore Preference for Native vs. Exotic Plants: Generalist Herbivores from Multiple Continents Prefer Exotic Plants That Are Evolutionarily Naïve
Enemy release and biotic resistance are competing, but not mutually exclusive, hypotheses addressing the success or failure of non-native plants entering a new region. Enemy release predicts that exotic plants become invasive by escaping their co-adapted herbivores and by being unrecognized or unpalatable to native herbivores that have not been selected to consume them. In contrast, biotic resi...
متن کاملAre exotic herbivores better competitors? A meta-analysis.
Competition plays an important role in structuring the community dynamics of phytophagous insects. As the number and impact of biological invasions increase, it has become increasingly important to determine whether competitive differences exist between native and exotic insects. We conducted a meta-analysis to test the hypothesis that native/ exotic status affects the outcome of herbivore comp...
متن کاملExotic plant invasion in the context of plant defense against herbivores.
Upon their introduction to new environments, plants may become invasive and suppress native plant species (Gurevitch et al., 2011). Plant-herbivore interactions play an important role in invasion success of an exotic plant. In the introduced ranges, exotic plants are believed to be largely free from specialist herbivore pressure, a hypothesis known as the enemy release hypothesis (ERH; Keane an...
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تاریخ انتشار 2015