Publications

Authors:

Sanna, Francesco; Mori, Nicola; Santoiemma, Giacomo; Pozzebon, Alberto; Scaccini, Davide; Marangoni, Federico; Sella, Luca

Title:

Halyomorpha halys (Hemiptera: Pentatomidae) as the major contributor to early olive drop in northern Italy

Year:

2024

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Referee:

No

Name of journal:

JOURNAL OF ECONOMIC ENTOMOLOGY

ISSN of journal:

0022-0493

N° Volume:

117

Number or Folder:

4

Page numbers:

1336-1346

Keyword:

brown marmorated stink bug, fungal olive disease, Heteroptera feeding damage, integrated stink bug management

Short description of contents:

In recent years, a new phenomenon of early olive drop is causing production losses in olive groves throughout northern Italy. To analyze the possible causes, field and laboratory trials were performed to assess the involvement of fungal pathogens and insect pests in this disease. External and internal symptoms of fungal infections or insect-feeding activities were researched. Fungi present in healthy and dislodged olives were investigated. The relationship between olives that fell and Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) infestation was assessed in a controlled infestation trial, and the effectiveness of an insecticidal strategy in reducing early olive drop was tested in open field conditions. A comparable number of fungi, mostly endophytes, were isolated and identified from both healthy and dislodged olives. The damage observed on dislodged olives was primarily ascribed to pentatomids feeding activity. Six stink bugs species were found in olive canopies, that is, the invasive H. halys, which was by far the most abundant, and Acrosternum heegeri Fieber, Nezara viridula (Linnaeus), Palomena prasina (Linnaeus), Piezodorus lituratus (Fabricious), and Rhaphigaster nebulosa (Poda). Halyomorpha halys caused intense fruit drop in the controlled infestation trial, and its infestation level significantly correlated with the number of olives that fell. Native stink bugs, present in much lower population compared to H. halys, could also partially contribute to early drop of olives. Insect proof net significantly reduced the early olive drop disease, while insecticide applications only partially reduced the stink bugs population density and, proportionally, early olive drop.

Product ID:

141291

Handle IRIS:

11562/1138747

Last Modified:

October 26, 2024

Bibliographic citation:

Sanna, Francesco; Mori, Nicola; Santoiemma, Giacomo; Pozzebon, Alberto; Scaccini, Davide; Marangoni, Federico; Sella, Luca, Halyomorpha halys (Hemiptera: Pentatomidae) as the major contributor to early olive drop in northern Italy «JOURNAL OF ECONOMIC ENTOMOLOGY» , vol. 117 , n. 4 , 2024 , pp. 1336-1346

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