<i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards
<i>Trissolcus kozlovi</i> (Hymenoptera: Scelionidae) emerged from field-laid eggs of <i>Halyomorpha halys</i> (Hemiptera: Pentatomidae) in North Italy, and it emerged in significantly higher numbers from fresh <i>H. halys</i> eggs compared to other native scelioni...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Insects |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4450/12/5/464 |
| _version_ | 1797533746714378240 |
|---|---|
| author | Silvia Teresa Moraglio Francesco Tortorici Sara Visentin Marco Giuseppe Pansa Luciana Tavella |
| author_facet | Silvia Teresa Moraglio Francesco Tortorici Sara Visentin Marco Giuseppe Pansa Luciana Tavella |
| author_sort | Silvia Teresa Moraglio |
| collection | DOAJ |
| description | <i>Trissolcus kozlovi</i> (Hymenoptera: Scelionidae) emerged from field-laid eggs of <i>Halyomorpha halys</i> (Hemiptera: Pentatomidae) in North Italy, and it emerged in significantly higher numbers from fresh <i>H. halys</i> eggs compared to other native scelionids. Since few data on <i>T. kozlovi</i> are available, its host-specificity and some biological traits were investigated in laboratory tests, and its impact after augmentative releases was evaluated in two hazelnut orchards. Among the 12 tested bug species (Hemiptera: Pentatomidae, Scutelleridae), only <i>Nezara viridula</i> was an unsuitable host, while the highest offspring proportions were obtained from <i>Arma custos</i>, <i>Pentatoma rufipes</i>, and <i>Peribalus strictus</i>, followed by <i>Acrosternum heegeri</i> and <i>Palomena prasina</i>. Furthermore, when reared on <i>P. strictus</i>, <i>T. kozlovi</i> showed a high longevity as well as a high adaptation to <i>H. halys</i> eggs. In both hazelnut orchards, <i>T. kozlovi</i> emerged from <i>H. halys</i> eggs after field releases, but it was not found in the next two years. The physiological host range of <i>T. kozlovi</i> was quite similar to that of <i>T. japonicus</i>, and probably <i>T. kozlovi</i> has just begun to attack <i>H. halys</i> as a new host. This aspect needs to be further investigated, as well as its favorable environmental conditions, its distribution and also its possible interaction with <i>T. japonicus</i>, currently present in Italy. |
| first_indexed | 2024-03-10T11:19:03Z |
| format | Article |
| id | doaj.art-5c724dc5dad148a1b93a0044d4ead01e |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T11:19:03Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-5c724dc5dad148a1b93a0044d4ead01e2023-11-21T20:10:09ZengMDPI AGInsects2075-44502021-05-0112546410.3390/insects12050464<i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut OrchardsSilvia Teresa Moraglio0Francesco Tortorici1Sara Visentin2Marco Giuseppe Pansa3Luciana Tavella4Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, ItalyDipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, Italy<i>Trissolcus kozlovi</i> (Hymenoptera: Scelionidae) emerged from field-laid eggs of <i>Halyomorpha halys</i> (Hemiptera: Pentatomidae) in North Italy, and it emerged in significantly higher numbers from fresh <i>H. halys</i> eggs compared to other native scelionids. Since few data on <i>T. kozlovi</i> are available, its host-specificity and some biological traits were investigated in laboratory tests, and its impact after augmentative releases was evaluated in two hazelnut orchards. Among the 12 tested bug species (Hemiptera: Pentatomidae, Scutelleridae), only <i>Nezara viridula</i> was an unsuitable host, while the highest offspring proportions were obtained from <i>Arma custos</i>, <i>Pentatoma rufipes</i>, and <i>Peribalus strictus</i>, followed by <i>Acrosternum heegeri</i> and <i>Palomena prasina</i>. Furthermore, when reared on <i>P. strictus</i>, <i>T. kozlovi</i> showed a high longevity as well as a high adaptation to <i>H. halys</i> eggs. In both hazelnut orchards, <i>T. kozlovi</i> emerged from <i>H. halys</i> eggs after field releases, but it was not found in the next two years. The physiological host range of <i>T. kozlovi</i> was quite similar to that of <i>T. japonicus</i>, and probably <i>T. kozlovi</i> has just begun to attack <i>H. halys</i> as a new host. This aspect needs to be further investigated, as well as its favorable environmental conditions, its distribution and also its possible interaction with <i>T. japonicus</i>, currently present in Italy.https://www.mdpi.com/2075-4450/12/5/464brown marmorated stink bugPentatomoideaScelionidaeegg parasitoidhost range |
| spellingShingle | Silvia Teresa Moraglio Francesco Tortorici Sara Visentin Marco Giuseppe Pansa Luciana Tavella <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards Insects brown marmorated stink bug Pentatomoidea Scelionidae egg parasitoid host range |
| title | <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards |
| title_full | <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards |
| title_fullStr | <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards |
| title_full_unstemmed | <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards |
| title_short | <i>Trissolcus kozlovi</i> in North Italy: Host Specificity and Augmentative Releases against <i>Halyomorpha halys</i> in Hazelnut Orchards |
| title_sort | i trissolcus kozlovi i in north italy host specificity and augmentative releases against i halyomorpha halys i in hazelnut orchards |
| topic | brown marmorated stink bug Pentatomoidea Scelionidae egg parasitoid host range |
| url | https://www.mdpi.com/2075-4450/12/5/464 |
| work_keys_str_mv | AT silviateresamoraglio itrissolcuskozloviiinnorthitalyhostspecificityandaugmentativereleasesagainstihalyomorphahalysiinhazelnutorchards AT francescotortorici itrissolcuskozloviiinnorthitalyhostspecificityandaugmentativereleasesagainstihalyomorphahalysiinhazelnutorchards AT saravisentin itrissolcuskozloviiinnorthitalyhostspecificityandaugmentativereleasesagainstihalyomorphahalysiinhazelnutorchards AT marcogiuseppepansa itrissolcuskozloviiinnorthitalyhostspecificityandaugmentativereleasesagainstihalyomorphahalysiinhazelnutorchards AT lucianatavella itrissolcuskozloviiinnorthitalyhostspecificityandaugmentativereleasesagainstihalyomorphahalysiinhazelnutorchards |