Next Article in Journal
Automated Applications of Acoustics for Stored Product Insect Detection, Monitoring, and Management
Next Article in Special Issue
Add Germany to the List—Adventive Population of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) Emerges in Germany
Previous Article in Journal
Old Parasitoids for New Mealybugs: Host Location Behavior and Parasitization Efficacy of Anagyrus vladimiri on Pseudococcus comstocki
Previous Article in Special Issue
Seasonal Captures of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) and the Effects of Habitat Type and Tree Species on Detection Frequency
Article

Survey for Adventive Populations of the Samurai Wasp, Trissolcus japonicus (Hymenoptera: Scelionidae) in Pennsylvania at Commercial Fruit Orchards and the Surrounding Forest

1
Fruit Research and Extension Center, Department of Entomology, Pennsylvania State University, Biglerville, PA 17307-0330, USA
2
Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, FL 32608, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Mark G. Wright, Giuseppino Sabbatini-Peverieri and Kim A. Hoelmer
Insects 2021, 12(3), 258; https://doi.org/10.3390/insects12030258
Received: 21 January 2021 / Revised: 23 February 2021 / Accepted: 15 March 2021 / Published: 19 March 2021
Invasive species that are freed of associated natural predators increase in population and disrupt the management plans of growers. The brown marmorated stink bug, Halyomorpha halys, is an invasive species that originated in Asia. A promising management tactic for the species is to release an associated parasitoid, the samurai wasp, Trissolcus japonicus. Populations of the samurai wasp have begun to adventively establish in several regions, including Pennsylvania. In order to monitor and use the species as an alternative management strategy to insecticides, it is imperative to understand the baseline populations during the early establishment phase. The aims of this study were to determine if the samurai wasp is already present in commercial orchards in Pennsylvania, where the brown marmorated stink bug has been present in high numbers since approximately 2010. Native Trissolcus wasps were also identified. This study found the samurai wasp in eight counties in Pennsylvania with several orchards containing populations of the species within orchard blocks. These baseline data provide a starting point for controlling H. halys naturally, which was previously controlled only with broad-spectrum insecticides.
The samurai wasp, Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), is an egg parasitoid associated with the brown marmorated stink bug, Halyomorpha halys (Stål) (Hemiptera: Pentatomidae). Trissolcus japonicus is a candidate for classical biological control of H. halys populations. Since 2014, adventive populations of T. japonicus have been detected in 14 US states, in the Canadian provinces of British Columbia and Ontario, and in two European countries, Switzerland and Italy. Establishing baseline information about populations of T. japonicus is important, as this species is not host specific to H. halys and the potential ecological effects of the accidental introductions are not fully known. In this study, yellow sticky cards were deployed at commercial fruit orchards in nine counties in Pennsylvania separated by more than 400 km. Trissolcus japonicus was detected on cards in eight counties, and in two habitats, in the orchard and at the forest border. Other native species of Scelionidae known to attack the eggs of H. halys were also identified, including Trissolcus euschisti (Ashmead), Trissolcus brochymenae (Ashmead), and Telenomus podisi Ashmead (Hymenoptera: Scelionidae). These results are important baseline ecological knowledge for both T. japonicus, which appears to be established in orchards throughout Pennsylvania, and other native Scelionidae. View Full-Text
Keywords: Hymenoptera; Scelionidae; Hemiptera; Pentatomidae; yellow sticky card; invasive species Hymenoptera; Scelionidae; Hemiptera; Pentatomidae; yellow sticky card; invasive species
Show Figures

Graphical abstract

MDPI and ACS Style

Peterson, H.M.; Talamas, E.; Krawczyk, G. Survey for Adventive Populations of the Samurai Wasp, Trissolcus japonicus (Hymenoptera: Scelionidae) in Pennsylvania at Commercial Fruit Orchards and the Surrounding Forest. Insects 2021, 12, 258. https://doi.org/10.3390/insects12030258

AMA Style

Peterson HM, Talamas E, Krawczyk G. Survey for Adventive Populations of the Samurai Wasp, Trissolcus japonicus (Hymenoptera: Scelionidae) in Pennsylvania at Commercial Fruit Orchards and the Surrounding Forest. Insects. 2021; 12(3):258. https://doi.org/10.3390/insects12030258

Chicago/Turabian Style

Peterson, Hillary M., Elijah Talamas, and Grzegorz Krawczyk. 2021. "Survey for Adventive Populations of the Samurai Wasp, Trissolcus japonicus (Hymenoptera: Scelionidae) in Pennsylvania at Commercial Fruit Orchards and the Surrounding Forest" Insects 12, no. 3: 258. https://doi.org/10.3390/insects12030258

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop