RT Journal Article
T1 Local‑scale dispersal patterns and susceptibility to Dryocosmus kuriphilus in different Castanea species and hybrid clones: insights from a field trial
A1 Castedo Dorado, Fernando
A1 Álvarez Álvarez, Pedro
A1 Cuenca Valera, Beatriz
A1 Lombardero Díaz, María Josefa
K1 Chestnut trees
K1 Hybrid clones
K1 Asian chestnut gall wasp
K1 Level of infestation
K1 Local dispersal
AB The chestnut gall wasp Dryocosmus kuriphilus is a major insect pest affecting chestnut trees worldwide. Medium and long-term control of this pest can be improved by using resistant or less susceptible cultivars and hybrid clones. In addition, little is known about the local patterns of dispersal of the pest. We obtained data from trees of 3 chestnut species and 27 hybrid clones in a field trial in NW Spain with the aim of evaluating the susceptibility of the material to the gall wasp and identifying possible drivers of local spatial dispersal. In the first 3 years of the invasion by D. kuriphilus, the number of trees attacked and the number of galls on each tree were spatially clustered. Tree height significantly predicted both variables, suggesting that gall wasps may use visual cues to locate suitable host trees, at least in the early stage of invasion. Assessment of the susceptibility of hybrid clones/pure species must take concurrent indicators of infestation levels into account. We suggest the use of indices involving galls on shoots because these enable good assessment of the damage to chestnut trees. The study findings add to existing knowledge on the susceptibility of hybrid chestnut clones. We report, for the first time, two hybrid clones resistant to the pest and one hybrid clone which exhibited consistently low values for all of the indicators of infestation level. The results have important implications regarding selection of plant material for use in afforestation in Spain, where the current high rate of chestnut planting is expected to continue
PB Springer
SN 1573-5095
YR 2021
FD 2021-11-26
LK https://hdl.handle.net/10347/44540
UL https://hdl.handle.net/10347/44540
LA eng
NO Castedo-Dorado, F., Álvarez-Álvarez, P., Cuenca Valera, B. et al. Local-scale dispersal patterns and susceptibility to Dryocosmus kuriphilus in different Castanea species and hybrid clones: insights from a field trial. New Forests 54, 9–28 (2023). https://doi.org/10.1007/s11056-021-09893-8
NO Funding was provided by research project AGL2016-76262-R
DS Minerva
RD 6 jun 2026