Fungi associated with necrotic galls of Dryocosmus kuriphilus (Hymenoptera: Cynipidae) in northern Spain

被引:11
作者
Fernandez, Mercedes M. [1 ,2 ]
Bezos, Diana [2 ]
Diez, Julio J. [2 ,3 ]
机构
[1] Univ Valladolid, Dept Agroforestry Sci, ETSIIAA, Av Madrid 50, Palencia 34071, Spain
[2] Sustainable Forest Management Res Inst UVa INIA, ETSIIAA, Palencia 34071, Spain
[3] Univ Valladolid, Dept Plant Prod & Forest Resources, Av Madrid 50, Palencia 34071, Spain
关键词
Asian chestnut gall wasp; Castanea sativa; Fusarium spp; Gnomoniopsis smithogilvyi; entomopathogens; fungal diversity; BIOLOGICAL-CONTROL; TORYMUS-SINENSIS; GNOMONIOPSIS-CASTANEAE; YASUMATSU HYMENOPTERA; NATIVE PARASITOIDS; BROWN-ROT; WASP; AGENT; IDENTIFICATION; GNOMONIACEAE;
D O I
10.14214/sf.9905
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
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.
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页数:12
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