Effect of extrafloral nectar provisioning on the performance of the adult parasitoid Diaeretiella rapae

Jamont, Marie; Crépellière, Solène; Jaloux, Bruno

doi:10.1016/j.biocontrol.2013.01.010

Cited by 41 publications

(34 citation statements)

References 48 publications

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“…Several other species have received some attention in this regard, and some have demonstrated the potential to attract beneficial insects. Broad bean, Vicia faba, produces EFN from stipular glands, which has been observed to support the cosmopolitan aphid parasitoid, Diaeretiella rapae (Jamont, Crepelliere & Jaloux 2013). Cassava, Manihot esculenta, produces EFN from its petioles which has been shown to enhance the activity of predatory phytoseiid mites (Bakker & Klein 1992).…”

Section: Extrafloral Nectar In Herbaceous Cropsmentioning

confidence: 99%

The use of extrafloral nectar in pest management: overcoming context dependence

Jones

Koptur

Wettberg

2016

Journal of Applied Ecology

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1. Extrafloral nectar (EFN) provides plants with indirect defence against herbivores by attracting predatory insects, predominantly ants. Decades of research have supported the role of EFN as an effective plant defence, dating back to Thomas Belt's description of ants on acacia in 1874. 2. Despite this extensive body of literature, knowledge of the ecological role of EFN has rarely been applied in the field of pest management. We review the existing literature on the use of EFN in agriculture and consider the obstacles that have hindered this transition. 3. Chief among these obstacles is the influence of ecological context on the outcome of EFN-mediated interactions. As such, we consider the options for various agricultural systems in the light of the growth habit of EFN-producing species, focusing first on orchard species and then on herbaceous crops. In each case, we highlight the benefits and difficulties of utilizing EFN as a pest management tool and of measuring its efficacy. 4. Synthesis and applications. We argue that it is time for a shift in extrafloral nectar (EFN) research towards applied settings and seek to address the question: How can a context-dependent and often inducible plant trait be utilized as a reliable tool in agricultural pest management? Breeding crops for increased EFN production, and intercropping with EFN-producing plants, can enhance assemblages of beneficial insects in many agricultural settings. Orchard systems, in particular, provide an ecological context in which the attraction of ants can contribute to cost-effective and sustainable pest management programmes over a broad geographic range.

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Section: Extrafloral Nectar In Herbaceous Cropsmentioning

confidence: 99%

The use of extrafloral nectar in pest management: overcoming context dependence

Jones

Koptur

Wettberg

2016

Journal of Applied Ecology

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“…The mixture comprised species producing a high quality and quantity of nectar (Hicks et al ., ), early and late flowering species, and species with a long‐lasting flowering period. Additionally, plant species providing extrafloral nectar that is easily accessible to parasitoids (Jamont et al ., ; Heil, ) were included. The second margin type was a grass strip sown with two species.…”

Section: Introductionmentioning

confidence: 99%

Sowing of margin strips rich in floral resources improves herbivore control in adjacent crop fields

Pollier

Tricault

Plantegenest

et al. 2018

Agri and Forest Entomology

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1 Field margin vegetation provides resources for natural enemies of crop herbivores. Thus, the design of plant mixtures improving resource provisioning is being discussed increasingly with respect to improving herbivore control. 2 We set up a field experiment to assess the effect of (i) a wildflower strip optimized for nectar provisioning; (ii) a grass strip and (iii) spontaneous vegetation on herbivore regulation in oilseed rape and wheat. We also analyzed the attractiveness of plant species to natural enemies. 3 The cover of flowering entomophilous plant species as a proxy of floral resource provisioning was twice as high in wildflower strips compared with the other strip treatments. Natural enemy densities were higher within and close to wildflower strips in the field. A corresponding effect on aphid predation and aphid infestation was observed. Significant negative correlations between natural enemy abundance in the margin and aphid infestation in the fields supported a causal relationship. The sown wildflower strip species were more attractive to natural enemies than spontaneous vegetation. 4 The results of the present study demonstrate that improved nectar provisioning increased the predation and parasitism of crop herbivores. Further research on the spatio-temporal dynamics of interactions is needed to determine why not all crop herbivores respond to an increase of natural enemies in field margins.

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“…A great diversity of parasitoids feed on sunflower EFN (e.g., Charlet and Gavloski 2011) and the presence of sunflowers has been shown to improve the area-wide survival of natural enemy species important in the biological control of key pests in neighboring crops (e.g., Brewer et al 2008), probably by supplying critical resources for natural enemies (Gurr et al 2004). Intercropping cultivated plants with EFN-producing companion plants has even been proposed to supplementary food for natural enemies early in the growing season before pests become abundant (Jamont et al 2013). …”

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confidence: 99%