Journal of Pest Science (2020) 93, 183-194
Silvia T. Moraglio, Francesco Tortorici, Marco G. Pansa, Gabriele Castelli, Marianna Pontini, Sara Scovero, Sara Visentin and Luciana Tavella (2020)
A 3-year survey on parasitism of Halyomorpha halys by egg parasitoids in northern Italy
Journal of Pest Science 93 (1), 183-194
Abstract: A 3-year survey was carried out to assess the impact of egg parasitoids on Halyomorpha halys in northern Italy. In total, 1826 H. halys egg masses were collected in the 3 years, and parasitoid adults emerged from 12% of eggs in 2016 and 2017, and from 21% in 2018. Anastatus bifasciatus was the main species emerging from H. halys eggs at all sites and years, confirming its ability to develop on fresh H. halys eggs. Only a few adults of native scelionid species emerged: Trissolcus kozlovi (first record in Italy), T. semistriatus, T. basalis and Telenomus turesis. In addition, a few adults of the Nearctic hyperparasitoid Acroclisoides solus (first record in Europe) were obtained from H. halys eggs collected at different sites. In 2018, for the first time an adventive population of Trissolcus japonicus was also recorded at one site, where the parasitism rate by the parasitoid species complex was overall higher than in 2016 and 2017. An additional supplemental survey at other sites of northern Italy in 2018 revealed the presence of T. japonicus and Trissolcus mitsukurii. The distribution and abundance of T. japonicus, T. mitsukurii and A. solus should be further investigated. Their host range and their interaction with native egg parasitoids, especially with A. bifasciatus, should be also assessed to better understand their potential role in biological control of H. halys.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Luciana Tavella
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Halyomorpha halys | Italy | |||
| Anastatus bifasciatus (parasitoid) | Halyomorpha halys | Italy | ||
| Trissolcus basalis (parasitoid) | Halyomorpha halys | Italy | ||
| Trissolcus semistriatus (parasitoid) | Halyomorpha halys | Italy | ||
| Trissolcus mitsukurii (parasitoid) | Halyomorpha halys | Italy | ||
| Trissolcus japonicus (parasitoid) | Halyomorpha halys | Italy |
