First Report of Native Parasitoids of Halyomorpha halys (Hemiptera: Pentatomidae) in Greece

Andreadis, Stefanos S.; Gogolashvili, Nikoloz E.; Fifis, Georgios T.; Navrozidis, Emmanouel I.; Thomidis, T.

doi:10.3390/insects12110984

Cited by 10 publications

(7 citation statements)

References 41 publications

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“…In no-choice tests using native parasitoids, the recorded parasitoid emergence percentages were consistent with previous observations (Roversi et al 2016;Stahl et al 2018;Andreadis et al 2021;Moraglio et al 2021a, b;Rot et al 2021), with only A. bifasciatus being significantly affected by treatment with Dentamet ® . However, a reduction of unhatched eggs was reported in replicates subjected to Dentamet ® application for all native species.…”

Section: Discussionsupporting

confidence: 90%

No adverse effects of symbiotic control on the parasitism of Halyomorpha halys by egg parasitoids

et al. 2022

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The brown marmorated stink bug Halyomorpha halys is a polyphagous insect, which has a devastating impact on agricultural production in many countries. The alteration of symbiont vertical transmission, by removing symbionts from stink bug eggs (symbiotic control), has been recently introduced in control programmes against this insect. A major advantage of this strategy is the compatibility with natural enemies, since it allows an insecticide-free approach that is not harmful to other agroecosystem components. However, the effect of anti-symbiont products on parasitism by egg parasitoids is still unexplored. Here, we investigated the impact on parasitism by native (Anastatus bifasciatus, Ooencyrtus telenomicida and Trissolcus kozlovi) and exotic (Trissolcus japonicus and Trissolcus mitsukurii) parasitoids that attack H. halys eggs, after treatment with the micronutrient biocomplex Dentamet®, used for symbiotic control. The native wasp species were tested in no-choice bioassays, showing that treatment of the egg masses did not affect emergence percentages, but the non-reproductive effects were often reduced by the biocomplex. The exotic species T. japonicus and T. mitsukurii were used in no-choice and paired choice bioassays, showing an opposite influence of Dentamet® on emergence percentage and preference in the two species. No-choice tests indicated the highest successful parasitoid emergence on biocomplex-treated egg masses for T. japonicus, while no preference in the paired comparison with eggs treated with water or untreated. In contrast, T. mitsukurii displayed the lowest parasitism after Dentamet® treatment in no-choice tests, and preferred egg masses without Dentamet® in paired choice tests. We did not record any natural symbiont acquisition by the parasitoids emerged from H. halys egg masses, indicating that the wasp fitness is very unlikely to be altered by dysbiotic effects resulting from treatments. Therefore, our results support a further implementation of symbiotic control in different crops in combination with biological control, as sustainable options for H. halys integrated pest management.

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Section: Discussionsupporting

confidence: 90%

No adverse effects of symbiotic control on the parasitism of Halyomorpha halys by egg parasitoids

et al. 2022

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“…So, we can assume that in A. bifasciatus females, the presence of curved spines on the ventral tarsomeres can play a role to improve locomotion on irregular surfaces, exactly as it happens in other Hymenoptera species such as in Formicidae (Beutel et al, 2020) or in Vespidae (Frantsevich and Gorb, 2004) showing tarsi equipped with spines for a firm grip on soil or strongly sculptured plant surfaces. In this regard, we can observe that quite often insect egg surface is not smooth but decorated, as clearly seen in the chorion surface of H. halys, which represents one of the main hosts of A. bifasciatus (Roversi et al, 2016;Stahl et al, 2019;Moraglio et al, 2020; Frontiers in Mechanical Engineering frontiersin.org Andreadis et al, 2021). In agreement with this, in our experiments on the egg surfaces of H. halys (rough surface) and N. viridula (less rough surface), females show higher force on the first than on the second species and on H. halys we observed a higher attachment ability of females compared to males.…”

Section: Discussionmentioning

confidence: 99%

“…Anastatus bifasciatus (Geoffroy) (Hymenoptera: Eupelmidae) can attack eggs of more than 30 host species belonging to Heteroptera and Lepidoptera (Noyes, 2019) and thus can be considered a polyphagous egg parasitoid (Stahl et al, 2018). In Europe, this species represents the most important native egg parasitoid of the eggs of the highly invasive pest species Halyomorpha halys Stål (Hemiptera: Pentatomidae), the brown marmorated stink bug (Roversi et al, 2016;Stahl et al, 2019;Moraglio et al, 2020;Andreadis et al, 2021), but can attack also other Pentatomidae species, such as the southern green stink bug Nezara viridula L. (Hemiptera: Pentatomidae) (Stahl et al, 2018). It lays one single egg in each parasitized host egg (Stahl et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Mechanical interaction of the egg parasitoid Anastatus bifasciatus (Hymenoptera: Eupelmidae) with artificial substrates and its host egg

et al. 2022

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Egg parasitoids play an important role in biological control of pest species attacking and killing their hosts at an early stage of their development. During the antagonistic coevolution with their hosts, egg parasitoids have developed a great ability to locate their host using chemical cues. A considerable amount of literature is available on this topic, while nothing is known about a possible adaptation of egg parasitoids to topography and mechanical properties of egg surface features and its shape when attaching to the host egg for oviposition. In the present investigation, the attachment ability of adults of both sexes of the egg parasitoid Anastatus bifasciatus (Hymenoptera: Eupelmidae) to artificial (polishing paper, flat glass, glass beads as dummies of the host egg) and natural surfaces (eggs of Halyomorpha halys and Nezara viridula, both Heteroptera: Pentatomidae), with different roughness and wettability, was measured using centrifugal force tester and traction force experiments. The parasitoid attachment devices and the egg surfaces were examined under cryo scanning electron microscope, wettability and roughness of natural and artificial substrates were characterised. We detected differences in the attachment devices and attachment ability of the two sexes. The collected data revealed a special ability of the female to attach to the eggs of the host species, thus suggesting an adaptation of the A. bifasciatus female to the surface features of the eggs during oviposition.

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“…Haye et al [14] listed olive (Olea europaea L.) as a crop potentially susceptible to H. halys. In fact, adults and juveniles H. halys were recently recorded on cultivated olives in Greece [15,16]. Concerns are increasing, especially after H. halys was reported to be damaging olives in the north of Italy [17].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Olive Fruit Damage Induced by Invasive Halyomorpha halys

Daher,

Chierici,

Urbani

et al. 2023

Insects

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The brown marmorated stink bug, Halyomorpha halys (Stål), is an invasive species causing economic crop losses. This species was recently detected attacking olive fruits. The aim of this study was to characterize feeding damage. Olive samples were initially collected from a field where H. halys was reported to cause damage to olive fruits. Hence, we conducted a field trial on the Moraiolo variety using sleeve cages to test the effect of H. halys feeding pressure on olive fruit drop and evaluated the effect of feeding on fruit quality. We tested two densities of H. halys (two or eight adults/cage) at two different stages of olive development, pre- and post-pit hardening. High pressure of H. halys before pit hardening caused a significant fruit drop compared to the control. In addition, chemical analysis of damaged and infested fruits revealed higher levels of total phenols compared to healthy fruits. These findings indicate that feeding by H. halys induced a stress response in the plants that could translate in quality variations in the olive drupes.

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First Report of Native Parasitoids of Halyomorpha halys (Hemiptera: Pentatomidae) in Greece

Cited by 10 publications

References 41 publications

No adverse effects of symbiotic control on the parasitism of Halyomorpha halys by egg parasitoids

No adverse effects of symbiotic control on the parasitism of Halyomorpha halys by egg parasitoids

Mechanical interaction of the egg parasitoid Anastatus bifasciatus (Hymenoptera: Eupelmidae) with artificial substrates and its host egg

Characterization of Olive Fruit Damage Induced by Invasive Halyomorpha halys

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