Nitrogen and water inputs to tomato plant do not trigger bottom‐up effects on a leafminer parasitoid through host and non‐host exposures

Dong, Yongcheng; Han, Peng; Niu, Changying; Zappalà, Lucia; Amiens‐Desneux, Edwige; Béarez, Philippe; Lavoir, Anne‐Violette; Biondi, Antonio; Desneux, Nicolas

doi:10.1002/ps.4750

Cited by 29 publications

(21 citation statements)

References 71 publications

(151 reference statements)

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“…Understanding the mechanisms involved in plant-herbivore-parasitoid tritrophic interactions (see Kaplan et al, 2016 for a review), and how global warming could impact them is particularly relevant for predicting herbivore pest outbreaks in agricultural systems. Moreover, plant community response to global warming can have a bottom-up effect on both insect herbivores and their parasitoids (Gillespie et al, 2012;but see Flores-Mejia et al, 2017;Dong et al, 2018). Here, however, we restrict our focus to the more general case of bipartite interactions between hosts and parasitoids.…”

Section: Introductionmentioning

confidence: 99%

Mechanisms structuring host–parasitoid networks in a global warming context: a review

Thierry

Hrček

Lewis

2019

Ecological Entomology

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1. In natural communities, multiple host and parasitoid species are linked to form complex networks of trophic and non-trophic interactions. Understanding how these networks will respond to global warming is of wide relevance for agriculture and conservation.2. This study synthesises the emerging evidence surrounding host-parasitoid networks in the context of global warming. The suite of direct and indirect interaction types within host-parasitoid networks is summarised, as well as their sensitivity to temperature changes. The study also compiles and reviews studies investigating the responses of whole host-parasitoid networks to increasing temperatures or proxy variables. The findings reveal there is limited evidence overall for the prediction that parasitism will be reduced under global warming: approximately equal numbers of studies show elevated and reduced parasitism.3. Increasingly, endosymbiotic bacteria are recognised as influential mediators of host-parasitoid interactions. These endosymbionts can change how individual species respond to global warming, and their effects can cascade to affect whole host-parasitoid networks. The evidence that symbiotic bacteria are likely to affect the response of host-parasitoid networks to global warming is reviewed. Symbionts can protect hosts from their parasitoids or influence thermal tolerance of their host species. Furthermore, the symbionts themselves can be impacted by global warming.4. Finally, the study considers the most promising avenues for future research into the mechanisms structuring host-parasitoid networks in the context of global warming. Alongside the increasing availability of modern molecular methods to document the structure of real, species-rich host-parasitoid networks, the study highlights the utility of manipulative experiments and mathematical models.

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Section: Introductionmentioning

confidence: 99%

Mechanisms structuring host–parasitoid networks in a global warming context: a review

Thierry

Hrček

Lewis

2019

Ecological Entomology

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“…By contrast to the impact of aphid on T. absoluta through resource competition, the lack of effect of the leafminer toward aphid is somehow surprising as T. absoluta is known to have a major impact on tomato plants (being a defoliator herbivore). For example, previous studies reported that T. absoluta negatively affected biological traits and population dynamic of the whitefly Bemisia tabaci, another major sap-feeder insect on tomato (Bompard et al 2013;Jaworski et al 2015;Dong et al 2018). Such discording results may be linked to the mobility habits of the two pests (aphid and whitefly) which differ drastically and could have its importance in their survival when competing with a defoliating insect.…”

Section: Effects Of the Secondary Pest On Biotic Interactions At Playmentioning

confidence: 99%

“…In addition to feeding on host hemolymph, parasitoid females require sugar food sources such as floral nectar and/or honeydew in order to sustain biological traits linked to actual parasitoid fitness (Jervis et al 2001;Wäckers et al 2008;Benelli et al 2017). Honeydew consumption has been shown to increase parasitoid longevity (Hogervorst et al 2007;Hagenbucher et al 2014;Tena et al 2018) and may be involved in parasitoid performance, e.g., by increasing offspring production (Lahiri et al 2017;Dong et al 2018;Picciau et al 2019); this has notably been reported for N. artynes feeding on floral nectar (Balzan and Wäckers 2013) as well as for N. tutae feeding on whitefly honeydew (Dong et al 2018). We demonstrate further that tomato aphid honeydew enhances N. tutae adult longevity under laboratory conditions (Fig.…”

Section: Impact Of Honeydewmentioning

confidence: 99%

“…It has been identified as a promising biological control agent on T. absoluta (Biondi et al 2013a;Chailleux et al 2014a;Naselli et al 2017;Bodino et al 2019). Previous laboratory trials showed that N. tutae reproductive and longevity outcomes were enhanced by the simultaneous presence of the sap feeder Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), a honeydew producer (Dong et al 2018). However, more field studies are needed to test the ability to control pest population.…”

Section: Introductionmentioning

confidence: 99%

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Impact of a shared sugar food source on biological control of Tuta absoluta by the parasitoid Necremnus tutae

et al. 2019

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Honeydew is a sugar-rich food source produced by sap-feeding insects, notably by major pests such as aphids and whiteflies. It is an important alternative food source for the adult stage of various key natural enemies (e.g., parasitoids), but it may be used also as food by agricultural pests. Necremnus tutae is an idiobiont parasitoid, and it is the most abundant larval parasitoid associated with the South American tomato pinworm, Tuta absoluta, in recently invaded European areas. The impact of N. tutae on T. absoluta populations was evaluated under greenhouse conditions with and without the presence of a honeydew producer, the aphid Macrosiphum euphorbiae. In addition, laboratory experiments were performed to evaluate the longevity of N. tutae and T. absoluta adults when fed with water, honey or honeydew produced by the aphid. In the greenhouse, N. tutae effectively reduced T. absoluta population by the end of the experiment, and this independently of the presence of the aphid; still the presence of M. euphorbiae led to delayed and reduced T. absoluta population peak when controlled by the parasitoid (there was a fourfold increase in parasitoid density in presence of aphid). The longevity of both N. tutae and T. absoluta females increased in the presence of honeydew (when compared to water only) under laboratory conditions; it hinted that honeydew could be used by an herbivore as T. absoluta. The interactions between the two phytophagous species showed contrasting effects, and this mostly independently of parasitoid presence. Tuta absoluta had no impact on aphid population dynamics. By contrast, the production of T. absoluta larvae was higher in the first part of the experiment as the adults lived longer (feeding on aphid honeydew) and produced more larvae. In the second part of the experiment, there were fewer T. absoluta larvae in the presence of the aphid, likely owing to resource competition and/or negative plant-mediated indirect interactions. We demonstrated that honeydew producers could impact parasitoid-host population dynamics both through direct and indirect interactions and that potential positive effects of a sugar food source toward a pest can be nullified in the long term by other negative effects occurring simultaneously.

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“…For both managed and natural ecosystems, changes in organismal phenology, and distribution due to altered mean and temperature variability, and precipitation patterns have been widely investigated in recent years (Parmesan, 2006;Lee et al, 2009;Calosi et al, 2010;IPCC, 2014). This is in addition to studies investigating changes in feeding and oviposition preferences of both herbivores (Chidawanyika et al, 2014;Mbande et al, 2019a,b) and natural enemies (Dong et al, 2018) as microcosms of various ecosystems undergoing environmental change. Another important consequence of changing climates is how it influences trophic cascades among food webs with sensitivity varying among different trophic groups (Voigt et al, 2003;Rosenblatt and Schmitz, 2016).…”

Section: Introductionmentioning

confidence: 95%

Global Climate Change as a Driver of Bottom-Up and Top-Down Factors in Agricultural Landscapes and the Fate of Host-Parasitoid Interactions

2019

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The global climate is rapidly changing and the evidence is increasingly manifesting across various biological systems. For arthropods, several studies have demonstrated how changing climates affect their distribution through phenological and physiological responses, largely focusing on various organismal fitness parameters. However, the net-effect of the changing climate among ecological communities may be mediated by the feedback pathways among interacting trophic groups under environmental change. For agroecosystems, the maintenance of the integrity of trophic interactions even under climate variability is a high priority. This is even more important in this era where there is advocacy for sustainable agriculture, with higher emphasis on environmentally benign methods. For this reason, pest management in food production systems using biological control (especially use of parasitoid antagonists) has come to the forefront. In this review, we give an overview of the diversity of physiological responses among host insect and parasitoid populations and how this may influence their interactions. We highlight how climate change may modify bottom-up and top-down factors among agroecosystems with a particular focus on plant-insect host-parasitoid tritrophic interactions. We also outline how habitat management may influence arthropod population dynamics and how it can be manipulated to improve on-farm climate resilience and parasitoid conservation. We wrap-up by highlighting how the application of knowledge of conservation biodiversity, designing of multifunctional resilient landscapes, and evolutionary physiology of arthropods under thermal stress may be used to improve the fitness of mass-reared parasitoids (in or ex situ) for the improvement in efficacy of parasitoids ecosystem services under thermally stressful environments

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Nitrogen and water inputs to tomato plant do not trigger bottom‐up effects on a leafminer parasitoid through host and non‐host exposures

Abstract: Our results provided evidence for the combination of bottom-up and top-down approaches in tomato integrated pest management programs. © 2017 Society of Chemical Industry.

Cited by 29 publications

References 71 publications

Mechanisms structuring host–parasitoid networks in a global warming context: a review

Mechanisms structuring host–parasitoid networks in a global warming context: a review

Impact of a shared sugar food source on biological control of Tuta absoluta by the parasitoid Necremnus tutae

Global Climate Change as a Driver of Bottom-Up and Top-Down Factors in Agricultural Landscapes and the Fate of Host-Parasitoid Interactions

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