Exploring the factors involved in the absence of parasitism of Chaetosiphon fragaefolii by generalist parasitoids in strawberry

Francesena, Natalia; Arneodo, Joel D.; Rocca, Margarita; Greco, Nancy M.

doi:10.1007/s10526-020-10044-9

Cited by 5 publications

(9 citation statements)

References 37 publications

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“…23 Additionally, the presence of defensive endosymbionts could explain the low incidence of parasitism in this aphid. 22 Thus, in the absence of sufficient parasitism, the role of predators is crucial for the management of C. fragaefolii in strawberry. 22 In addition to plant health, the production of high-quality strawberry fruits is also heavily dependent on efficient pollination.…”

Section: Introductionmentioning

confidence: 99%

“…An exception is found for the specialist strawberry aphid Chaetosiphon fragaefolii , a major strawberry pest worldwide 20,21 . This aphid species causes both direct plant damage and indirect plant damage by transmitting viruses such as mild yellow‐edge virus (SMYEV), strawberry crinkle cytorhabdovirus (SCV), and strawberry mottle virus (SMoV) that reduce plant vigour and negatively impact yield 22 . Unlike other major aphid pests, for which several species of commercially available parasitoids can be used, parasitism of C. fragaefolii in the field occurs rarely 23,24 .…”

Section: Introductionmentioning

confidence: 99%

“…22 Thus, in the absence of sufficient parasitism, the role of predators is crucial for the management of C. fragaefolii in strawberry. 22 In addition to plant health, the production of high-quality strawberry fruits is also heavily dependent on efficient pollination. 11,12,25,26 Strawberry plants bear flowers that are hermaphroditic and self-fertile.…”

Section: Introductionmentioning

confidence: 99%

“…It is thought that the hairs covering the body of C. fragaefolii protect them from predation and that their location on the plant buds offers a spatial refuge from parasitism 23 . Additionally, the presence of defensive endosymbionts could explain the low incidence of parasitism in this aphid 22 . Thus, in the absence of sufficient parasitism, the role of predators is crucial for the management of C. fragaefolii in strawberry 22 …”

Section: Introductionmentioning

confidence: 99%

“…Additionally, the presence of defensive endosymbionts could explain the low incidence of parasitism in this aphid 22 . Thus, in the absence of sufficient parasitism, the role of predators is crucial for the management of C. fragaefolii in strawberry 22 …”

Section: Introductionmentioning

confidence: 99%

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Dual purpose: Predatory hoverflies pollinate strawberry crops and protect them against the strawberry aphid, Chaetospihon fragaefolii

Oystaeyen

Tuyttens

Boonen

et al. 2022

Pest Management Science

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BACKGROUND: Predatory syrphids are an important functional group due to their potential for providing multiple ecosystem services. Adults feed on nectar and pollen, and can be effective pollinators, while larvae are voracious predators that can reduce aphid pressure. Still, little research has addressed their potential dual function in agroecosystems. In this study, we assessed the potential of two predatory hoverflies, Eupeodes corollae and Sphaerophoria rueppellii, for delivering concurrent pollination and biological control of Chaetospihon fragaefolii in greenhouse strawberries.RESULTS: Both hoverfly species effectively pollinated strawberry flowers of two different varieties ('Elsanta' and 'Sonsation'), resulting in an increase in high-quality marketable fruits, a reduction of fruit deformities, and higher number of seeds per fruit compared to pollinator-excluded fruits. S. ruepellii had a significantly longer flower handling time than E. corollae, which translated to a more efficient pollination expressed as higher seed numbers per fruit after a single flower visit. By contrast, flowers that were open to multiple visits were more effectively pollinated by E. corollae, suggesting that E. corollae is potentially a better cross-pollinator than S. rueppellii. In addition, both hoverfly species suppressed aphid populations in strawberry (var. 'Sonata'), with S. rueppellii and E. corollae reducing aphid populations by 49% and 62%, respectively. CONCLUSION: Predatory syrphids can concurrently contribute to pollination and biological control in strawberry in a greenhouse setting.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual purpose: Predatory hoverflies pollinate strawberry crops and protect them against the strawberry aphid, Chaetospihon fragaefolii

Oystaeyen

Tuyttens

Boonen

et al. 2022

Pest Management Science

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The brown lacewing Micromus angulatus: A new predator for the augmentative biological control of aphids

Pekas,

De Smedt,

Verachtert

et al. 2023

Biological Control

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The potential of the hoverfly Allograpta exotica as a biological control agent of the strawberry aphid Chaetosiphon fragaefolii

Díaz‐Lucas,

Maza,

Kirschbaum

et al. 2023

J Applied Entomology

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Syrphid larvae are effective biological control agents in numerous crops due to their voracity, and they are used in both augmentative and conservation‐based strategies within horticultural systems. This study conducted laboratory trials to ascertain the predation rate of Allograpta exotica (Wiedemann) (Diptera: Syrphidae) on Chaetosiphon fragaefolii (Cockerell) (Hemiptera: Aphididae) and to compare it with the predation rate on Aphis gossypii Glover (Hemiptera: Aphididae), another significant aphid species affecting strawberries. Additionally, field trials were conducted to assess the reduction in the field population of C. fragaefolii achieved by A. exotica within strawberry crops. We observed a significant increase in the number of aphids consumed by a larva as it progressed from first‐instar larvae (L1) to third‐instar larvae (L3). Specifically, the mean aphid consumption by second‐instar larvae (L2) was nearly 11 times higher for C. fragaefolii and 10 times higher for A. gossypii compared to L1. Furthermore, the consumption rate of L3 larvae was approximately 2 times higher for both aphid species compared to L2. In laboratory conditions, A. exotica larvae significantly reduced the number of both aphid species, but the control on A. gossypii was higher than on C. fragaefolii. The results of the field experiment demonstrated that the predatory hoverfly A. exotica significantly reduced the numbers of C. fragaefolii compared to the control treatment, highlighting its potential as a promising biological control agent in strawberry crops.

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Exploring the factors involved in the absence of parasitism of Chaetosiphon fragaefolii by generalist parasitoids in strawberry

Cited by 5 publications

References 37 publications

Dual purpose: Predatory hoverflies pollinate strawberry crops and protect them against the strawberry aphid, Chaetospihon fragaefolii

Dual purpose: Predatory hoverflies pollinate strawberry crops and protect them against the strawberry aphid, Chaetospihon fragaefolii

The brown lacewing Micromus angulatus: A new predator for the augmentative biological control of aphids

The potential of the hoverfly Allograpta exotica as a biological control agent of the strawberry aphid Chaetosiphon fragaefolii

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