Dryocosmus kuriphilus, Yasumatsu, 1951

B, Mario Contarini, Rossini, Luca, B, Romina Caccia, B, Silvia Morelli, B, Isacco Beritognolo, B, Muriel Gaudet, B, Fiorella Villani, B, Bruno Paparatti & B, Stefano Speranza, 2021, Do Castanea sativa wild provenances influence Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) infestations?, Turkish Journal of Zoology 45 (3), pp. 206-215 : 209

3.1. Preliminary survey of D. kuriphilus infestation

The preliminary investigations carried out in 2014 revealed a significant variation (Kruskal– Wallis test, p <0.0001) in the percentage of infestation among the provenances and highlighted that Gr2 plants were the least infested by D. kuriphilus , in comparison to the other provenances ( Figure 2a ).

Percentage of plants sorted into the different classes of infestations can be seen in Figure 2b . The proportion of plants belonging to the infestation class 1 was much higher in Gr2 provenance than in the other provenances, as 32% of Gr2 plants did not have any galls. On the opposite end of the scale, the lowest percentage of the infestation class 1 was found in Sp1 (1.2%) and It1 (2.4%) provenances.

Figures

Figure 2. Panel a). Percentage (mean ± SE) of D. kuriphilus infestation observed in 2014 on C. sativa provenances. Different letters indicate significant differences at the Dunn’s multiple comparison test, (p <0.0001) among the provenances. Panel b). Percentage contribution of each class of infestation (1–4). Gr, Greece; It, Italy, Sp, Spain; the numbers 1 or 2 identify mesic or more xeric climatic conditions, respectively.