Biology of two key Palaearctic larval ectoparasitoids when parasitizing the invasive pest Tuta absoluta

Chailleux, Anaïs; Desneux, Nicolas; Arnó, Judit; Gabarra, Rosa

doi:10.1007/s10340-014-0557-7

Cited by 31 publications

(39 citation statements)

References 58 publications

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“…Among them, the Eulophid larval ectoparasitoid, first identified as Necremnus near artynes but most probably attributable to the sp. nov. Necremnus tutae Ribes & Bernardo, was confirmed as one of the most effective parasitoid agents against T. absoluta , …”

Section: Introductionmentioning

confidence: 99%

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

Dong

Han

Niu

et al. 2017

Pest Management Science

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Section: Introductionmentioning

confidence: 99%

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

Dong

Han

Niu

et al. 2017

Pest Management Science

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Section: Introductionmentioning

confidence: 99%

“…The parasitoid species used was Stenomesius japonicus Ashamed (Hymenoptera: Eulophidae), a native specialist parasitoid of leaf miner larvae that behaves as a solitary idiobiont ectoparasitoid (Zappala et al 2013;Chailleux et al 2014). It parasitizes the four T. absoluta larvae instars, with a preference for the second and third instars (Chailleux et al 2014). The predator Macrolophus pygmaeus Rambur (Hemiptera: Miridae) is a native generalist omnivorous predator that feeds on eggs and occasionally on T. absoluta young larvae by extracting hemolymph through the larva cuticle (through a stylet mouthpart) (Urbaneja et al 2009;Jaworski et al 2013).…”

Section: Introductionmentioning

confidence: 99%

New parasitoid-predator associations: female parasitoids do not avoid competition with generalist predators when sharing invasive prey

Chailleux

Wajnberg

Zhou

et al. 2014

Naturwissenschaften

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Optimal habitat selection is essential for species survival in ecosystems, and interspecific competition is a key ecological mechanism for many observed species association patterns. Specialized animal species are commonly affected by resource and interference competition with generalist and/or omnivorous competitors, so avoidance behavior could be expected. We hypothesize that specialist species may exploit broad range cues from such potential resource competitors (i.e., cues possibly common to various generalist and/or omnivorous predators) to avoid costly competition regarding food or reproduction, even in new species associations. We tested this hypothesis by studying short-term interactions between a native larval parasitoid and a native generalist omnivorous predator recently sharing the same invasive host/prey, the leaf miner Tuta absoluta. We observed a strong negative effect of kleptoparasitism (food resource stealing) instead of classical intraguild predation on immature parasitoids. There was no evidence that parasitoid females avoided the omnivorous predator when searching for oviposition sites, although we studied both long- and short-range known detection mechanisms. Therefore, we conclude that broad range cue avoidance may not exist in our biological system, probably because it would lead to too much oviposition site avoidance which would not be an efficient and, thus, beneficial strategy. If confirmed in other parasitoids or specialist predators, our findings may have implications for population dynamics, especially in the current context of increasing invasive species and the resulting creation of many new species associations.

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“…The same trend has been experienced for the control of aphids [41,42] and T . absoluta [10,20,43]. Our results show that M .…”

Section: Discussionmentioning

confidence: 72%

Life-History Traits of Macrolophus pygmaeus with Different Prey Foods

et al. 2016

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Macrolophus pygmaeus Rambur (Hemiptera: Miridae) is a generalist predatory mirid widely used in augmentative biological control of various insect pests in greenhouse tomato production in Europe, including the invasive tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera, Gelechiidae). However, its biocontrol efficacy often relies on the presence of alternative prey. The present study aimed at evaluating the effect of various prey foods (Ephestia kuehniella eggs, Bemisia tabaci nymphs, Tuta absoluta eggs and Macrosiphum euphorbiae nymphs) on some life history traits of M. pygmaeus. Both nymphal development and adult fertility of M. pygmaeus were significantly affected by prey food type, but not survival. Duration of nymphal stage was higher when M. pygmaeus fed on T. absoluta eggs compared to the other prey. Mean fertility of M. pygmaeus females was greatest when fed with B. tabaci nymphs, and was greater when offered M. euphorbiae aphids and E. kuehniella eggs than when offered T. absoluta eggs. Given the low quality of T. absoluta eggs, the efficacy of M. pygmaeus to control T. absoluta may be limited in the absence of other food sources. Experiments for assessing effectiveness of generalist predators should involve the possible impact of prey preference as well as a possible prey switching.

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Biology of two key Palaearctic larval ectoparasitoids when parasitizing the invasive pest Tuta absoluta

Cited by 31 publications

References 58 publications

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

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

New parasitoid-predator associations: female parasitoids do not avoid competition with generalist predators when sharing invasive prey

Life-History Traits of Macrolophus pygmaeus with Different Prey Foods

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