Current issue: 53(2)

Under compilation: 53(3)

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Silva Fennica 1926-1997
1990-1997
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Acta Forestalia Fennica
1953-1968
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1913-1932

Articles by Diana Bezos

Category: Research article

article id 9905, category Research article
Mercedes M. Fernandez, Diana Bezos, Julio J. Diez. (2018). Fungi associated with necrotic galls of Dryocosmus kuriphilus (Hymenoptera: Cynipidae) in northern Spain. Silva Fennica vol. 52 no. 3 article id 9905. https://doi.org/10.14214/sf.9905
Highlights: Presence of Dryocosmus kuriphilus in Northern Spain; The mycobiota associated to necrotic galls was studied for the first time; 7 fungal species were identified; The entomopathogenic fungi found could be use as potential biological control agents; Gnomomiopsis smithogilvyi, Fusarium oxysporum and F. avenaceum known by their toxicity against the insect, were found.

The Asian chestnut gall wasp (ACGW), Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) is one of the most important pests in Castanea species worldwide. In 2012, it was found for the first time in Catalonia (Spain) and a year later, in the north of Spain (Cantabria). Today, it is present in 14 Spanish provinces. In search of biological control against the ACGW, several authors have previously found the relationship between the presence of some Fusarium Link species in necrotic galls and wasp mortality due to the production of different types of wall-degrading enzymes and entomopathogenic mycotoxins. The objective of this study was to investigate the mycobiota associated with necrotic galls to find interesting perspectives for biological control of the ACGW. For this purpose, in 2014, 119 necrotic galls of Castanea sativa Miller were plated to isolate and identify the associated fungi. The fungal isolates were identified by the morphology of the fruiting bodies and DNA analyses. From necrotic galls, 7 species of fungi were identified. Of these, we highlight three species of Fusarium Link as well as the presence of Gnomoniopsis smithogilvyi Shuttlew, Liew & Guest due to its toxic capacity. Further studies are required to verify the effectiveness of these fungal species as biocontrol agents against the ACGW.

  • Fernandez, Dpt. of Agroforestry Sciences, ETSIIAA, University of Valladolid, Av. Madrid 50, 34071 Palencia, Spain; Sustainable Forest Management Research Institute UVa-INIA, ETSIIAA, 34071 Palencia, Spain ORCID ID: http://orcid.org/0000-0002-1646-5027 E-mail: mffernan@agro.uva.es (email)
  • Bezos, Sustainable Forest Management Research Institute UVa-INIA, ETSIIAA, 34071 Palencia, Spain ORCID ID:E-mail: dianabezos@yahoo.es
  • Diez, Sustainable Forest Management Research Institute UVa-INIA, ETSIIAA, 34071 Palencia, Spain; Dpt. of Plant Production and Forest Resources, University of Valladolid, Av. Madrid 50, 34071 Palencia, Spain ORCID ID:E-mail: jdcasero@pvs.uva.es

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