Presence of substitute diets alters plant resistance to specialist and generalist herbivores: a meta‐analysis

Sato, Yasuhiro; Kudoh, Hiroshi

doi:10.1002/ecs2.1446

Cited by 2 publications

(1 citation statement)

References 45 publications

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“…In general, herbivores alter their preferences and/or performance depending on their dietary menu (e.g. Lefcheck et al 2013;Wetzel et al 2016;Sato & Kudoh 2016a). In particular, the theory of optimal foraging suggests that consumers should utilize suboptimal resources as the density of optimal resource becomes low (e.g.…”

Section: Examples Of Aes In Plant-herbivore Interactionmentioning

confidence: 99%

Associational effects and the maintenance of polymorphism in plant defense against herbivores: review and evidence

Sato

2018

Plant Species Biology

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Many plant species have evolved defense traits against herbivores. Associational effects (AEs) refer to a kind of apparent interaction where the herbivory risk to a focal plant species depends on the composition of other plant species in a neighborhood. Despite ample evidence for AEs between different plant species, this point of view has rarely been applied to polymorphism in defense traits within a plant species. The purpose of this review is to highlight an overlooked role of conspecific AEs in maintaining polymorphism in antiherbivore defense. First, I present a general review of AE between plant species and its role in the coexistence of plant species. This viewpoint of AE can be applied to genetic polymorphism within a plant species, as it causes frequency‐ and density‐dependent herbivory between multiple plant types. Second, I introduce a case study of conspecific AEs in the trichome‐producing (hairy) and glabrous plants of Arabidopsis halleri subsp. gemmifera. Laboratory and semi‐field experiments illustrated that AEs against the brassica leaf beetle Phaedon brassicae mediate a minority advantage in defense and fitness between hairy and glabrous plants. Combined with a statistical modeling approach, field observation revealed that conspecific AEs can maintain the trichome dimorphism via negative frequency‐dependent selection in a plant population. Finally, I discuss spatial and temporal scales at which AEs contribute to shaping genetic variation in antiherbivore defense in a plant metapopulation. Based on the review and evidence, I suggest that AEs play a key role in the maintenance of genetic variation within a plant species.

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Section: Examples Of Aes In Plant-herbivore Interactionmentioning

confidence: 99%

Associational effects and the maintenance of polymorphism in plant defense against herbivores: review and evidence

Sato

2018

Plant Species Biology

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Sensory mutations in Drosophila melanogaster influence associational effects between resources during oviposition

Verschut

Carlsson

Anderson

et al. 2017

Sci Rep

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Neighboring resources can affect insect oviposition behavior when the complexity of sensory information obscures information about host resource availability in heterogeneous resource patches. These effects are referred to as associational effects and are hypothesized to occur through constraints in the sensory processing of the insect during host search, resulting into suboptimal resource use. Because the possibilities to study these constraints on naturally occurring animals are limited, we instead used sensory mutants of Drosophila melanogaster to determine the importance of sensory information in the occurrence of associational effects. We found that oviposition was mainly governed by non-volatile chemical cues and less by volatile cues. Moreover, the loss of gustatory sensilla resulted in random resource selection and eliminated associational effects. In conclusion, our study shows that associational effects do not necessarily depend on constraints in the sensory evaluation of resource quality, but may instead be a direct consequence of distinctive selection behavior between different resources at small scales.

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Presence of substitute diets alters plant resistance to specialist and generalist herbivores: a meta‐analysis

Cited by 2 publications

References 45 publications

Associational effects and the maintenance of polymorphism in plant defense against herbivores: review and evidence

Associational effects and the maintenance of polymorphism in plant defense against herbivores: review and evidence

Sensory mutations in Drosophila melanogaster influence associational effects between resources during oviposition

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