Response of <i>Brassica oleracea</i> to temporal variation in attack by two herbivores affects preference and performance of a third herbivore

Stam, Jeltje M.; Chrétien, Lucille T. S.; Dicke, Marcel; Poelman, Erik H.

doi:10.1111/een.12455

Cited by 19 publications

(30 citation statements)

References 71 publications

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“…SA-inducing aphids thereby reduce plant phenotypic responses to caterpillars, but the reverse effects of JA on SA are less pronounced (Zarate et al 2007, Vos et al 2013. When comparing only leaf chewers, other studies found that the first-arriving herbivore strongly determines plant resistance to other herbivores (Viswanathan et al 2007, Stam et al 2017, although subsequent herbivores have also been found to override effects of the first herbivores (Erb et al 2011, Miller-Pierce andPreisser 2012). Plant plasticity in defence against herbivores may thus be an important mediator in directing the priority effects in community assembly on an individual plant.…”

Section: Discussionmentioning

confidence: 99%

Order of herbivore arrival on wild cabbage populations influences subsequent arthropod community development

Stam

Dicke

Poelman

2018

Oikos

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In plant–arthropod associations, the first herbivores to colonise a plant may directly or indirectly affect community assembly on that particular plant. Whether the order of arrival of different arthropod species further modulates community assembly and affects plant fitness remains unclear. Using wild Brassica oleracea plants in the field, we manipulated the order of arrival of early‐season herbivores that belong to different feeding guilds, namely the aphid Brevicoryne brassicae and caterpillars of Plutella xylostella. We investigated the effect of herbivore identity and order of arrival on community assembly on two B. oleracea plant populations during two growth seasons. For this perennial plant, we evaluated whether foliar herbivory also affected herbivore communities on the flowers and if these interactions affected plant seed production. Aphid infestation caused an increase in parasitoid abundance, but caterpillars modulated these effects, depending on the order of herbivore infestation and plant population. In the second growth season, when plants flowered, the order of infestation of leaves with aphids and caterpillars more strongly affected abundance of herbivores feeding on the flowers than those feeding on leaves. Infestation with caterpillars followed by aphids caused an increase in flower‐feeding herbivores compared to the reversed order of infestation in one plant population, whereas the opposite effects were observed for the other plant population. The impact on plant seed set in the first reproductive year was limited. Our work shows that the identity and arrival order of early season herbivores may have long‐term consequences for community composition on individual plants and that these patterns may vary among plant populations. We discuss how these community processes may affect plant fitness and speculate on the implications for evolution of plant defences.

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Section: Discussionmentioning

confidence: 99%

Order of herbivore arrival on wild cabbage populations influences subsequent arthropod community development

Stam

Dicke

Poelman

2018

Oikos

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“…Simultaneous herbivory can induce different plant responses as compared to induction by a single herbivore (Pierre, Jansen, et al, ; Ponzio, Papazian, Albrectsen, Dicke, & Gols, ). This can have consequences for plant‐mediated interactions (Chrétien et al, ; Soler et al, ; Stam, Chrétien, Dicke, & Poelman, ; Stam et al, ) and plant seed production (Stam et al, ). Ontogenetic variation in networks of indirect plant‐mediated interactions includes these complex interactive effects on plant fitness (Poelman & Kessler, ; Rusman et al, ; Soper Gorden & Adler, ; Stam et al, ).…”

Section: Discussionmentioning

confidence: 99%

Plant ontogeny determines strength and associated plant fitness consequences of plant‐mediated interactions between herbivores and flower visitors

et al. 2020

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1. Plants show ontogenetic variation in growth-defence strategies to maximize reproductive output within a community context. Most work on plant ontogenetic variation in growth-defence trade-offs has focussed on interactions with antagonistic insect herbivores. Plants respond to herbivore attack with phenotypic changes. Despite the knowledge that plant responses to herbivory affect plant mutualistic interactions with pollinators required for reproduction, indirect interactions between herbivores and pollinators have not been included in the evaluation of how ontogenetic growth-defence trajectories affect plant fitness. 2. In a common garden experiment with the annual Brassica nigra, we investigated whether exposure to various herbivore species on different plant ontogenetic stages (vegetative, bud or flowering stage) affects plant flowering traits, interactions with flower visitors and results in fitness consequences for the plant. 3. Effects of herbivory on flowering plant traits and interactions with flower visitors depended on plant ontogeny. Plant exposure in the vegetative stage to the caterpillar Pieris brassicae and aphid Brevicoryne brassicae led to reduced flowering time and flower production, and resulted in reduced pollinator attraction, pollen beetle colonization, total seed production and seed weight. When plants had buds, infestation by most herbivore species tested reduced flower production and pollen beetle colonization. Pollinator attraction was either increased or reduced. Plants infested in the flowering stage with P. brassicae or Lipaphis erysimi flowered longer, while infestation by any of the herbivore species tested increased the number of flower visits by pollinators. 4. Our results show that the outcome of herbivore-flower visitor interactions in B. nigra is specific for the combination of herbivore species and plant ontogenetic stage. Consequences of herbivory for flowering traits and reproductive output were strongest when plants were attacked early in life. Such differences in selection pressures imposed by herbivores to specific plant ontogenetic stages may drive the evolution of distinct ontogenetic trajectories in growth-defence-reproduction strategies and include indirect interactions between herbivores and flower visitors.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Additional supporting information may be found online in theSupporting Information section. How to cite this article: Rusman Q, Lucas-Barbosa D, Hassan K, Poelman EH. Plant ontogeny determines strength and associated plant fitness consequences of plant-mediated interactions between herbivores and flower visitors. J Ecol.

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“…A longer feeding period by the initial herbivore may allow more time for a plant to mount defences, which could be depleted by the time the second herbivore arrives at the plant (Karban, ; Underwood, ). In other herbivore interactions, on B. oleracea , a longer duration between feeding by P. xylostella caterpillars and B. brassicae aphids increases resistance to a third herbivore in the system, Mamestra brassicae (L.) (Stam et al., ).…”

Section: Discussionmentioning

confidence: 99%

Herbivore‐induced plants do not affect oviposition but do affect fitness of subsequent herbivores on canola

Weeraddana

Evenden

2019

Entomologia Exp Applicata

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The diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), is oligophagous on plants in the Brassicaceae, and is considered one of the most significant insect pests of canola (Brassica napus L.), a major oilseed crop grown in the Prairie Provinces of Canada. The bertha armyworm (BAW), Mamestra configurata Walker (Lepidoptera: Noctuidae), is a generalist herbivore that preferentially feeds on canola plants. In the canola growing season in the Prairie Provinces of Canada, DBM feeding occurs prior to BAW herbivory. In this study, we test the effect of DBM herbivory on subsequent host use by BAW. Oviposition by female BAW was not influenced by previous DBM‐herbivory or mechanical damage of canola plants. Bertha armyworm larvae were deterred from feeding on canola previously damaged by DBM and larvae developed into lighter pupae when reared on DBM‐damaged plants. Bertha armyworm pupae that developed from larvae fed on mechanically damaged plants had similar pupal weights to those fed undamaged plants. Adult BAW reared on canola with previous DBM feeding damage had marginally smaller wings than moths reared on canola treated differently. The combination of these results suggests that herbivory by the brassicaceous specialist, DBM, negatively influences host use and larval performance by the generalist, BAW, on canola.

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Response of Brassica oleracea to temporal variation in attack by two herbivores affects preference and performance of a third herbivore

Cited by 19 publications

References 71 publications

Order of herbivore arrival on wild cabbage populations influences subsequent arthropod community development

Order of herbivore arrival on wild cabbage populations influences subsequent arthropod community development

Plant ontogeny determines strength and associated plant fitness consequences of plant‐mediated interactions between herbivores and flower visitors

Herbivore‐induced plants do not affect oviposition but do affect fitness of subsequent herbivores on canola

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