Abstract
Although plant-herbivore-enemy interactions have been studied extensively in cross-continental plant invasions, little is known about intra-continental range expanders, despite their rapid spread globally. Using an ecological and metabolomics approach, we compared the insect performance of a generalist and specialist herbivore and a parasitoid, as well as plant defence traits, among native, exotic invasive and exotic non-invasive populations of the Turkish rocket, Bunias orientalis, a range-expanding species across parts of Eurasia. In the glasshouse, the generalist herbivore, Mamestra brassicae, and its parasitoid, Microplitis mediator, performed better on non-native than on native plant populations. Insect performance did not differ between the two non-native origins. By contrast, the specialist herbivore, Pieris brassicae, developed poorly on all populations. Differences in trichome densities and in the metabolome, particularly in the family-specific secondary metabolites (i.e. glucosinolates), may explain population-related variation in the performance of the generalist herbivore and its parasitoid. Total glucosinolate concentrations were significantly induced by herbivory, particularly in native populations. Native populations of B. orientalis are generally better defended than non-native populations. The role of insect herbivores and dietary specialization as a selection force on defence traits in the range-expanding B. orientalis is discussed.
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Mamestra brassicae performed better on non-native than native plant populations.
- Taxon
- Bunias orientalis
Bunias orientalist0 - Interactor
- Mamestra brassicae
_-_(imago)%2C_Arnhem%2C_the_Netherlands_-_2.jpg?width=60)
Mamestra brassicaee0herbivore - Outcome
- performed bettere0
- Direction
- bettere0
- Comparator
- native plant populationse0
- Setting
- glasshousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_(imago)%2C_Arnhem%2C_the_Netherlands_-_2.jpg?width=500)
Verbatim
e0“In the glasshouse, the generalist herbivore, Mamestra brassicae, and its parasitoid, Microplitis mediator, performed better on non-native than on native plant populations”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Microplitis mediator performed better on non-native than native plant populations.
- Taxon
- Bunias orientalisBunias orientalist0
- Interactor
- Microplitis mediator
Microplitis mediatore0other - Outcome
- performed bettere0
- Direction
- bettere0
- Comparator
- native plant populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“its parasitoid, Microplitis mediator, performed better on non-native than on native plant populations”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Insect performance did not differ between the two non-native origins.
- Taxon
- Bunias orientalisBunias orientalist0
- Outcome
- Insect performancee0
- Direction
- did not differe0
- Comparator
- two non-native originse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Insect performance did not differ between the two non-native origins”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Pieris brassicae developed poorly on all plant populations.
- Taxon
- Bunias orientalisBunias orientalist0
- Interactor
- Pieris brassicae
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=60)
Pieris brassicaee0herbivore - Outcome
- Pieris brassicae, developed poorlye0
- Direction
- poorlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pieris_brassicae_-_Foret_de_Bouconne%2C_France_-_female.jpg?width=500)
Verbatim
e0“the specialist herbivore, Pieris brassicae, developed poorly on all populations”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Trichome density and metabolome differences may explain variation in generalist herbivore performance.
- Taxon
- Bunias orientalisBunias orientalist0
- Organ / stage
- trichomee0
- Compound
- glucosinolatese0
- Outcome
- performance of the generalist herbivore and its parasitoide0
- Qualifier
- may explaine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in trichome densities and in the metabolome, particularly in the family-specific secondary metabolites (i.e. glucosinolates), may explain population-related variation in the performance of the generalist herbivore and its parasitoid”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Herbivory significantly induced total glucosinolate concentration, particularly in native populations.
- Taxon
- Bunias orientalisBunias orientalist0
- Treatment
- herbivorye0
- Outcome
- Total glucosinolate concentrationse0
- Direction
- inducede0
- Qualifier
- particularly in native populationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total glucosinolate concentrations were significantly induced by herbivory, particularly in native populations”
t0“the Turkish rocket, Bunias orientalis”
Claim · model-written summary
Native populations were generally better defended than non-native populations.
- Taxon
- B. orientalisBunias orientalise0
- Outcome
- better defendede0
- Direction
- bettere0
- Comparator
- non-native populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Native populations of B. orientalis are generally better defended than non-native populations”