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Implementing Mass Rearing of Trissolcus japonicus (Hymenoptera: Scelionidae) on Cold-Stored Host Eggs by Barbara Bittau; Maria Luisa Dindo; Giovanni Burgio; Giuseppino Sabbatini-Peverieri; Kim Alan Hoelmer; Pio Federico Roversi; Antonio Masetti is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Implementing Mass Rearing of Trissolcus japonicus (Hymenoptera: Scelionidae) on Cold-Stored Host Eggs about?

Halyomorpha halys (Stål) (Hemiptera: Pentatomidae), a pest of Asian origin, has been causing severe damage to Italian agriculture. The application of classical biological control by the release of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), an exotic egg parasitoid, appears to be one promising solution. In Italy, releases of T. japonicus in the field were authorized in 2020. In this study, some parameters that could influence the rearing of T. japonicus in insectaries were investigated. A significantly higher production of progeny was observed on host eggs stored at 6 °C (86.5%) compared to −24 °C (48.8%) for up to two months prior to exposure to parasitism. There were no significant differences in progeny production from single females in a vial provided with only one egg mass (83.2%) or 10 females inside a cage with 6 egg masses (83.9%). The exposure of parasitoids to refrigerated (6 °C) egg masses of H. halys for 72 h led to a significantly higher production of progeny (62.1%) compared to shorter exposures for 48 (44.0%) or 24 h (37.1%). A decline in production of progeny by the same female was detected between the first (62.1%) and the second parasitization (41.3

Who reads Implementing Mass Rearing of Trissolcus japonicus (Hymenoptera: Scelionidae) on Cold-Stored Host Eggs?

Author

Barbara Bittau; Maria Luisa Dindo; Giovanni Burgio; Giuseppino Sabbatini-Peverieri; Kim Alan Hoelmer; Pio Federico Roversi; Antonio Masetti

Publisher

MDPI AG

Published

2021

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)