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

Costi, Elena; Wong, Warren H. L.; Cossentine, J. E.; Acheampong, Susanna; Haye, Tim; Talamas, Elijah J.; Abram, Paul K.

doi:10.1016/j.biocontrol.2020.104396

Cited by 8 publications

(4 citation statements)

References 48 publications

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“…Similarly, laboratory trials showed that native Trissolcus species are able to induce egg abortion (non-reproductive effects) in H. halys [ 25 ]. Studies carried out on North American native parasitoids suggest that there is currently no evidence of intraspecific variation in traits that allow native parasitoids to successfully develop in H. halys eggs [ 36 ]. However, the successful adaptation of native parasitoids to a new host may occur over larger timescales (i.e., decades) [ 37 ] and should be further studied in Europe.…”

Section: Discussionmentioning

confidence: 99%

Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha halys in Europe with a Large-Scale Monitoring Program

Zapponi

Tortorici

Anfora

et al. 2021

Insects

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The brown marmorated stink bug Halyomorpha halys is an invasive agricultural pest with a worldwide distribution. Classical biological control has been identified as the most promising method to reduce the populations of H. halys. Adventive populations of two candidates for releases, Trissolcus japonicus and Trissolcus mitsukurii, have recently been detected in Europe. To assess their distribution and abundance, a large-scale survey was performed. From May to September 2019, a wide area covering northern Italy and parts of Switzerland was surveyed, highlighting the expanding distribution of both Tr. japonicus and Tr. mitsukurii. Within four years after their first detection in Europe, both species have rapidly spread into all types of habitats where H. halys is present, showing a wide distribution and continuous expansion. Both exotic Trissolcus showed high levels of parasitism rate towards H. halys, while parasitization of non-target species was a rare event. The generalist Anastatus bifasciatus was the predominant native parasitoid of H. halys, while the emergence of native scelionids from H. halys eggs was rarely observed. The presence of the hyperparasitoid Acroclisoides sinicus was also recorded. This study provided fundamental data that supported the development of the first inoculative release program of Tr. japonicus in Europe.

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Section: Discussionmentioning

confidence: 99%

Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha halys in Europe with a Large-Scale Monitoring Program

Zapponi

Tortorici

Anfora

et al. 2021

Insects

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“…In the invaded areas, natural enemies have been shown to be ineffective in controlling H. halys populations as parasitism and predation rates are typically under 10% [ 19 , 20 , 21 , 22 ]. While several egg parasitoid species have been reported to readily attack H. halys egg masses, they either cannot successfully develop in this new host or exhibit highly variable parasitism levels [ 22 , 23 , 24 , 25 ]. In its native range, H. halys populations are controlled by several predatory and parasitoid species of which egg parasitoids in the genus Trissolcus play an important role [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Add Germany to the List—Adventive Population of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) Emerges in Germany

Dieckhoff

Wenz

Renninger

et al. 2021

Insects

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The brown marmorated stink bug, Halyomorpha halys, is a polyphagous pest species of worldwide economic importance. Since the mid-1990s, it has invaded and become established in various countries outside its native Asian range. In the newly invaded areas, biological control by native natural enemies has been shown to be insufficient in the long-term control of this severe pest. Adventive populations of Trissolcus japonicus, an important biological control agent of H. halys in Asia, have been reported from North America and some European countries since the mid-2010s. This egg parasitoid species seems to follow in the wake of the establishment of H. halys populations outside their native Asian range. Here, we report the first discovery of an adventive population of T. japonicus in Germany. In 2020, adult T. japonicus were recovered from parasitized H. halys egg masses (naturally laid and sentinel egg masses) and collected in ruderal areas using an insect suction sampler. The arrival of T. japonicus in Germany, unintentional through pathways yet unknown, corroborates a northbound expansion of its range within Europe. Further field surveys will show the extent of its dispersal and establishment capacities within this new distribution area.

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“…Native natural enemies, including insect parasitoids, could potentially provide control of exotic pests in the absence of classical biological control agents. Initially, however, native parasitoids tend to be inefficient at attacking invaders due to the novelty of the exotic host (Abram et al, 2017; Chabert et al, 2012; Costi et al, 2020; Konopka et al, 2018; Kruitwagen et al, 2018). Over time, the richness and efficacy of native parasitoid complexes can increase, sometimes reaching similar levels of parasitism as on native hosts within decades or centuries (Cornell & Hawkins, 1993; Grabenweger et al, 2010; Gröbler & Lewis, 2008; Vindstad et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Limited gains in native parasitoid performance on an invasive host beyond three generations of selection

Linder

Jarrett

Fanning

et al. 2022

Evolutionary Applications

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Co‐evolved natural enemies provide sustainable and long‐term control of numerous invasive insect pests, but the introduction of such enemies has declined sharply due to increasing regulations. In the absence of co‐evolved natural enemies, native species may attack exotic invasive pests; however, they usually lack adaptations to control novel hosts effectively. We investigated the potential of two native pupal parasitoids, Pachycrepoideus vindemmiae and Trichopria drosophilae, to increase their developmental success on the invasive Drosophila suzukii. Replicated populations of the two parasitoids were subjected to 10 generations of laboratory selection on D. suzukii with Drosophila melanogaster serving as the co‐evolved host. We assessed developmental success of selected and control lines in generations 0, 3, and 10. Changes in host preference, sex ratio, development time, and body size were measured to evaluate correlated responses with adaptation. Both parasitoid species responded rapidly to selection by significantly increasing their developmental success on the novel host within three generations, which remained constant for seven additional generations without further improvement. The generalist parasitoid species P. vindemmiae was able to reach similar developmental success as the control populations, while the performance of the more specialized parasitoid T. drosophilae remained lower on the novel than on the co‐evolved host. There was no increase in preference towards the novel host over 10 generations of selection nor were there changes in development time or body size associated with adaptation in either parasitoid species. The sex ratio became less female‐biased for both parasitoids after three generations of selection but rebounded in P. vindemmiae by generation 10. These results suggest that a few generations of selection may be sufficient to improve the performance of native parasitoids on invasive hosts, but with limits to the degree of improvement for managing invasive pests when exotic co‐evolved natural enemies are not available.

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

Cited by 8 publications

References 48 publications

Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha halys in Europe with a Large-Scale Monitoring Program

Assessing the Distribution of Exotic Egg Parasitoids of Halyomorpha halys in Europe with a Large-Scale Monitoring Program

Add Germany to the List—Adventive Population of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) Emerges in Germany

Limited gains in native parasitoid performance on an invasive host beyond three generations of selection

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