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Herbivore Density Mediates The Indirect Effect Of Herbivores On Plants Via Induced Resistance And Apparent Competition, Ricardo A. Ramirez, Micky D. Eubanks
Herbivore Density Mediates The Indirect Effect Of Herbivores On Plants Via Induced Resistance And Apparent Competition, Ricardo A. Ramirez, Micky D. Eubanks
Biology Faculty Publications
Herbivore-induced plant resistance and apparent competition are two indirect ways herbivores interact. If a less damaging herbivore indirectly suppresses the abundance of a more damaging herbivore via these mechanisms, then plants may ultimately benefit. Changes in herbivore density, however, can dictate the intensity of species interactions and may play a critical role in determining the outcome of plant- and predator-mediated herbivore interactions. We tested the effects of herbivore density on the strength of indirect interactions among phloem-feeding aphids and herbivorous caterpillars and the outcome of these interactions for their shared host plant, cotton (Gossypium hirsutum). We quantified the …