Halyomorpha halys (Heteroptera: Pentatomidae) egg surface chemicals inhibit North American Telenomus and Trissolcus (Hymenoptera: Scelionidae) parasitism

Tognon, Roberta; Aldrich, Jeffrey R.; Buffington, Matthew L.; Talamas, Elijah J.; Sant’Ana, Josué; Zalom, Frank G.

doi:10.1016/j.biocontrol.2017.07.014

Cited by 17 publications

(11 citation statements)

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“…Some variation in the ability of indigenous parasitoids to develop in and abort H. halys eggs has previously been observed in a number of field and laboratory studies (Abram et al, 2014;Cornelius et al, 2016a, b;Herlihy et al, 2016;Ogburn et al, 2016;Dieckhoff et al, 2017;Konopka et al, 2019;Tognon et al, 2017Tognon et al, , 2019Abram et al, 2014;Haye et al, 2015b;Abram et al, 2016;Abram et al, 2017b). However, laboratory studies have either been restricted in taxonomic breadth, and within-species genetic variation (e.g., Abram et al, 2014Abram et al, , 2016Konopka et al, 2018Konopka et al, , 2020Haye et al, 2015b), or have lacked direct behavioural observations of parasitoids and unexposed control egg masses to relate levels of acceptance to developmental success and egg abortion (e.g., Tognon et al, 2017Tognon et al, , 2019. In field studies, because most ovipositions by native parasitoids are unsuccessful (Abram et al, 2014(Abram et al, , 2016(Abram et al, , 2017b, the true incidence of H. halys egg attack by genetically variable pools of native parasitoids and how it might explain variation in H. halys egg mortality is still mostly unclear (Haye et al, 2015b).…”

Section: Introductionmentioning

confidence: 81%

“…In field studies, because most ovipositions by native parasitoids are unsuccessful (Abram et al, 2014(Abram et al, , 2016(Abram et al, , 2017b, the true incidence of H. halys egg attack by genetically variable pools of native parasitoids and how it might explain variation in H. halys egg mortality is still mostly unclear (Haye et al, 2015b). Previous studies have suggested that native parasitoids might eventually adapt to be able to develop in H. halys eggs (Abram et al, 2014(Abram et al, , 2016Tognon et al, 2017) but none have assessed whether there is enough intraspecific variation in relevant traits that would be needed for natural selection to proceed. Standardized laboratory studies that consider the role of intra-and inter-specific variation in acceptance, offspring development, and host egg abortion induction in field populations of parasitoids could improve understanding of the range of impacts that indigenous parasitoids may have on H. halys in different invaded regions, both in the short and long terms.…”

Section: Introductionmentioning

confidence: 99%

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Variation in levels of acceptance, developmental success, and abortion of Halyomorpha halys eggs by native North American parasitoids

et al. 2020

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Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Variation in levels of acceptance, developmental success, and abortion of Halyomorpha halys eggs by native North American parasitoids

et al. 2020

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“…Jones et al (1973) reported that volatiles present on Lepidoptera scales attract parasitoids at long distances, suggesting that the encounter with the host is also mediated by scales left in the environment or on eggs. In addition, volatiles emitted by eggs act on the chemotaxis of parasitoids at short distances, aiding in host recognition and/or localization (Renou et al, 1992; Colazza et al, 2010; Tognon et al, 2017). The responses of T. pretiosum to O scales combined with eggs were similar to only eggs, which is evidence of the absence of kairomones on this type of scale.…”

Section: Discussionmentioning

confidence: 99%

Influence of semiochemicals present in the scales of Spodoptera frugiperda on chemotactic behavior of Trichogramma pretiosum

Vargas

Sant’Ana

Blassioli‐Moraes

et al. 2021

Entomologia Exp Applicata

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Trichogramma species (Hymenoptera: Trichogrammatidae) are known to use the host's sex pheromone as a kairomone in foraging strategies. Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) deposit scales on eggs during oviposition, which may be a mechanical barrier or facilitate the action of parasitoids due to the presence of semiochemicals. This study identified the compounds in S. frugiperda scales and evaluated the chemotactic responses of Trichogramma pretiosum Riley to volatiles in host eggs and scales, as well as to synthetic equivalents of substances identified therein. Bioassays were performed with scales extracted from the wings and abdomen of females under three conditions: virgin, mated, or mated and oviposited. The parasitoids were tested in a two-choice olfactometer comparing scales, eggs, and synthetic compounds. The extracts were analyzed by gas chromatography and mass spectrometry (GC-MS) and 20 compounds were identified, among them two acetate components of the sex pheromone of S. frugiperda (Z9-14:OAC and Z11-16:OAC). Trichogramma pretiosum females did not differentiate between scales from wings and abdomen. They were more attracted to scales from virgin and mated S. frugiperda females, and these treatments did not trigger different chemotactic responses compared with eggs. The parasitoid was significantly attracted to Z9-14:OAC and Z11-16:OAC. We conclude that T. pretiosum use chemical clues in the scales to search for S. frugiperda eggs.

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“…Although Tognon et al . 45 suggested surface chemicals from H . halys eggs inhibited parasitization by native North American egg parasitoids, our behavioural data do not support this idea, at least for T .…”

Section: Discussionmentioning

confidence: 99%

Understanding the mismatch between behaviour and development in a novel host-parasitoid association

Konopka

Poinapen

Gariépy

et al. 2018

Sci Rep

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Foraging parasitoid females should preferentially oviposit on hosts most suitable for progeny development to maximize their fitness. However, the introduction of a new host species may disrupt the link between the reliability of the cues and the expected adaptive outcome of female choice, leading to an evolutionary trap. This mismatch between behavioural acceptance and lack of development exists for North American and European egg parasitoids (Scelionidae) that encounter invasive Halyomorpha halys in areas where this exotic host has recently established. To explain this mismatch, we utilized an L9 orthogonal array design to assess and rank the influence of several critical factors characterizing host resource (host species, egg age, egg status, and surface wash) on behaviour (acceptance, patch residence and patch exploitation) and development of North American native Trissolcus euschisti egg parasitoid. Our results indicate that the host egg age is most important for behaviour, but is least influential for development of the progeny. This study suggests that the maladaptive decision to oviposit in an unsuitable host is due to a mismatch between the cues that females use, and the subsequent expected outcome of this choice. Therefore, it is the relative importance of individual factors when assessed simultaneously that influences the decision-making of female parasitoids.

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Halyomorpha halys (Heteroptera: Pentatomidae) egg surface chemicals inhibit North American Telenomus and Trissolcus (Hymenoptera: Scelionidae) parasitism

Cited by 17 publications

References 48 publications

Variation in levels of acceptance, developmental success, and abortion of Halyomorpha halys eggs by native North American parasitoids

Variation in levels of acceptance, developmental success, and abortion of Halyomorpha halys eggs by native North American parasitoids

Influence of semiochemicals present in the scales of Spodoptera frugiperda on chemotactic behavior of Trichogramma pretiosum

Understanding the mismatch between behaviour and development in a novel host-parasitoid association

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