Gustatory response and longevity in Aphidius parasitoids and their hyperparasitoid Dendrocerus aphidum

Goelen, Tim; Baets, Dieter; Kos, Martine; Paulussen, Caroline; Lenaerts, Marijke; Rediers, Hans; Wäckers, Félix; Jacquemyn, Hans; Lievens, Bart

doi:10.1007/s10340-017-0907-3

Cited by 18 publications

(13 citation statements)

References 42 publications

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“…Unlike the per‐day analysis of D. pulchellus , daily offspring production by C. albifrons was relatively unchanged between treatments (with the exception of the buckwheat + vetch combination), possibly indicating that carbohydrates are contributing less directly to C. albifrons offspring production but are allowing them to live longer. Increases in longevity in both members of a parasitoid‐hyperparasitoid interaction due to sugar feeding were also recently observed by Goelen et al (). For both parasitoids, daily leek moth mortality due to NRE remained consistent among all treatments indicating that observed increases in this mortality in the sugar and nectar treatments were likely a result of increased parasitoid longevity, and not directly due to carbohydrate acquisition.…”

Section: Discussionsupporting

confidence: 74%

“…This is promising as it likely means that the carbohydrates gained from supplemental nectar sources (as would be a conceivable conservation biological control strategy in the field) are contributing directly to offspring production, and not solely to parasitoid to C. albifrons offspring production but are allowing them to live longer. Increases in longevity in both members of a parasitoid-hyperparasitoid interaction due to sugar feeding were also recently observed by Goelen et al (2018). For both parasitoids, daily leek moth mortality due to NRE remained consistent among all treatments indicating that observed increases in this mortality in the sugar and nectar treatments were likely a result of increased parasitoid longevity, and not directly due to carbohydrate acquisition.…”

Section: Discussionsupporting

confidence: 64%

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Effects of floral resources on the efficacy of a primary parasitoid and a facultative hyperparasitoid

Miall

Abram

Cappuccino

et al. 2019

J Applied Entomology

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Resources added to agroecosystems to enhance biological control are potentially available to multiple members of the resident insect community—not only the biological control agents for which the resources are intended. Many studies have examined the effects of sugar feeding on the efficacy of biological control agents. However, such information is lacking for other, interacting species such as facultative hyperparasitoids, which may contribute to pest suppression but can also interfere with introduced biological control agents. Under greenhouse conditions, we tested the direct effects of sugar and nectar provisioning on the longevity, host‐killing impact and offspring production of two pupal parasitoids associated with leek moth, Acrolepiopsis assectella: the introduced biological control agent, Diadromus pulchellus, and the native facultative hyperparasitoid, Conura albifrons. Adding sucrose, buckwheat or a combination of buckwheat and common vetch to a sugar‐deprived system (potted leek plants in cages) increased parasitoid longevity and resulted in higher leek moth parasitism and mortality compared to water or common vetch treatments. However, the two parasitoid species exhibited a distinct temporal response to the treatments, likely influenced by differences in their life histories. This study provides insight into how integrating conservation biological control techniques could affect the success of a classical biological control programme.

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Section: Discussionsupporting

confidence: 74%

Section: Discussionsupporting

confidence: 64%

Effects of floral resources on the efficacy of a primary parasitoid and a facultative hyperparasitoid

Miall

Abram

Cappuccino

et al. 2019

J Applied Entomology

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“…Goelen et al . () recently reported that sucrose enhances longevity of the aphid hyperparasitoid D. aphidum to a significantly greater extent than does trehalose, although maltose and mannitol were not included in their study. Another interesting finding is that the concentration of sorbitol was negatively correlated with longevity and fecundity, albeit non‐significantly.…”

Section: Discussionmentioning

confidence: 99%

“…Sucrose and its components glucose and fructose are common carbohydrates in honeydew and nectar and are well known for their nutritional value to hymenopteran insects (e.g. Lundgren, 2009;Tompkins et al, 2010;Goelen et al, 2018). Not much is known about the nutritional roles of the other carbohydrates on fitness of hymenopteran insects, although insect-synthesised carbohydrates, such as trehalose, may be relatively unsuitable for parasitoid survival (Wackers, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Not much is known about the nutritional roles of the other carbohydrates on fitness of hymenopteran insects, although insect-synthesised carbohydrates, such as trehalose, may be relatively unsuitable for parasitoid survival (Wackers, 2001). Goelen et al (2018) recently reported that sucrose enhances longevity of the aphid hyperparasitoid D. aphidum to a significantly greater extent than does trehalose, although maltose and mannitol were not included in their study. Another interesting finding is that the concentration of sorbitol was negatively correlated with longevity and fecundity, albeit non-significantly.…”

Section: Discussionmentioning

confidence: 99%

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Honeydew composition and its effect on life‐history parameters of hyperparasitoids

Neerbos

Boer

Salis

et al. 2019

Ecological Entomology

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1. Diets that maximise life span often differ from diets that maximise reproduction. Animals have therefore evolved advanced foraging strategies to acquire optimal nutrition and maximise their fitness. The free‐living adult females of parasitoid wasps (Hymenoptera) need to balance their search for hosts to reproduce and for carbohydrate resources to feed. 2. Honeydew, excreted by phloem‐feeding insects, presents a widely available carbohydrate source in nature that can benefit natural enemies of honeydew‐producing insects. However, the effects of variation in honeydew on organisms in the fourth trophic level, such as hyperparasitoids, are not yet understood. 3. This study examined how five different honeydew types influence longevity and fecundity of four hyperparasitoid taxa. Asaphes spp. (Pteromalidae) and Dendrocerus spp. (Megaspilidae) are secondary parasitoids of aphid parasitoids and are thus associated with honeydew‐producing insects. Gelis agilis and Acrolyta nens (both Ichneumonidae) are secondary parasitoids of species that do not use honeydew‐producing hosts. 4. Most honeydew types had a positive or neutral effect on life span and fecundity of hyperparasitoids compared with controls without honeydew, although negative effects were also found for both aphid hyperparasitoids. Honeydew produced by aphids feeding on sweet pepper plants was most beneficial for all hyperparasitoid taxa, which can partially be explained by the high amount of honeydew, but also by the composition of dietary sugars in these honeydew types. 5. The findings of this study underline the value of aphid honeydew as a carbohydrate resource for fourth‐trophic‐level organisms, not only those associated with honeydew‐producing insects but also ‘interlopers’ without such a natural association.

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Exploiting chemical ecology to manage hyperparasitoids in biological control of arthropod pests

Cusumano

Harvey

Bourne

et al. 2019

Pest Management Science

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Insect hyperparasitoids are fourth trophic level organisms that commonly occur in terrestrial food webs, yet they are relatively understudied. These top-carnivores can disrupt biological pest control by suppressing the populations of their parasitoid hosts, leading to pest outbreaks, especially in confined environments such as greenhouses where augmentative biological control is used. There is no effective eco-friendly strategy that can be used to control hyperparasitoids. Recent advances in the chemical ecology of hyperparasitoid foraging behavior have opened opportunities for manipulating these top-carnivores in such a way that biological pest control becomes more efficient. We propose various infochemical-based strategies to manage hyperparasitoids. We suggest that a push-pull strategy could be a promising approach to 'push' hyperparasitoids away from their parasitoid hosts and 'pull' them into traps. Additionally, we discuss how infochemicals can be used to develop innovative tools improving biological pest control (i) to restrict accessibility of resources (e.g. sugars and alternative hosts) to primary parasitoid only or (ii) to monitor hyperparasitoid presence in the crop for early detection. We also identify important missing information in order to control hyperparasitoids and outline what research is needed to reach this goal. Testing the efficacy of synthetic infochemicals in confined environments is a crucial step towards the implementation of chemical ecology-based approaches targeting hyperparasitoids.

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Gustatory response and longevity in Aphidius parasitoids and their hyperparasitoid Dendrocerus aphidum

Cited by 18 publications

References 42 publications

Effects of floral resources on the efficacy of a primary parasitoid and a facultative hyperparasitoid

Effects of floral resources on the efficacy of a primary parasitoid and a facultative hyperparasitoid

Honeydew composition and its effect on life‐history parameters of hyperparasitoids

Exploiting chemical ecology to manage hyperparasitoids in biological control of arthropod pests

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