NDLI: Loss of specificity: native but not invasive populations of Triadica sebifera vary in tolerance to different herbivores

Content Provider	Springer Nature Link
Author	Carrillo, Juli McDermott, Daniel Siemann, Evan
Copyright Year	2013
Abstract	During introduction, invasive plants can be released from specialist herbivores, but may retain generalist herbivores and encounter novel enemies. For fast-growing invasive plants, tolerance of herbivory via compensatory regrowth may be an important defense against generalist herbivory, but it is unclear whether tolerance responses are specifically induced by different herbivores and whether specificity differs among native and invasive plant populations. We conducted a greenhouse experiment to examine the variation among native and invasive populations of Chinese tallow tree, Triadica sebifera, in their specificity of tolerance responses to herbivores by exposing plants to herbivory from either one of two generalist caterpillars occurring in the introduced range of Triadica. Simultaneously, we measured the specificity of another defensive trait, extrafloral nectar (EFN) production, to detect potential tradeoffs between resistance and tolerance of herbivores. Invasive populations had higher aboveground biomass tolerance than native populations, and responded non-specifically to either herbivore, while native populations had significantly different and specific aboveground biomass responses to the two herbivores. Both caterpillar species similarly induced EFN in native and invasive populations. Plant tolerance and EFN were positively correlated or had no relationship and biomass in control and herbivore-damaged plants was positively correlated, suggesting little costs of tolerance. Relationships among these vegetative traits depended on herbivore type, suggesting that some defense traits may have positive associations with growth-related processes that are differently induced by herbivores. Importantly, loss of specificity in invasive populations indicates subtle evolutionary changes in defenses in invasive plants that may relate to and enhance their invasive success.
Starting Page	863
Ending Page	871
Page Count	9
File Format	PDF
ISSN	00298549
Journal	Oecologia
Volume Number	174
Issue Number	3
e-ISSN	14321939
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-11-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Extrafloral nectar Exotic species Generalist Plant-herbivore interactions Tradeoffs Ecology Plant Sciences Hydrology/Water Resources
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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Data from: A native plant competitor mediates the impact of above- and belowground damage on an invasive tree (Dataset)

Decreased indirect defense in the invasive tree, Triadica sebifera

Plant genotypes affect aboveground and belowground herbivore interactions by changing chemical defense

Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree.

Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree

An exotic invasive plant selects for increased competitive tolerance, but not competitive suppression, in a native grass

Losing a battle but winning the war: moving past preference–performance to understand native herbivore–novel host plant interactions

Letter biotic resistance to plant invasions? native herbivores prefer non-native plants.

Opposing effects of native and exotic herbivores on plant invasives (2006).

Loss of specificity: native but not invasive populations of Triadica sebifera vary in tolerance to different herbivores

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Data from: A native plant competitor mediates the impact of above- and belowground damage on an invasive tree (Dataset)

Decreased indirect defense in the invasive tree, Triadica sebifera

Plant genotypes affect aboveground and belowground herbivore interactions by changing chemical defense

Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree.

Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree

An exotic invasive plant selects for increased competitive tolerance, but not competitive suppression, in a native grass

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Letter biotic resistance to plant invasions? native herbivores prefer non-native plants.

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Loss of specificity: native but not invasive populations of Triadica sebifera vary in tolerance to different herbivores