RT Journal Article
T1 Climate as a possible driver of gall morphology in the chestnut pest Dryocosmus kuriphilus across Spanish invaded areas
A1 Gil-Tapetado, Diego
A1 Cabrero Sañudo, Francisco José
A1 Polidori, Carlo
A1 Gómez Sánchez, José Francisco
A1 Nieves-Aldrey, José Luis
AB The alien cynipid wasp Dryocosmus kuriphilus Yasumatsu, 1951 is a serious pest of chestnuts (Castanea spp.) in Japan, North America and Europe, causing fruit losses while inducing galls in buds. While D. kuriphilus galls have a recognizable and roughly invariable globular shape, their size varies, reaching up to 4 cm in diameter. Among other factors, such variation may depend on different climatic conditions in different attacked areas. Here, we sampled and measured 375 D. kuriphilus galls from 25 localities throughout the Iberian Peninsula, including both cold and rainy northern (Eurosiberian) areas and warm and dry central-southern (Mediterranean) areas, to test the effects of climate and geographical location on gall morphology. The analyses indicate that gall mass and volume follow a pattern that can be associated with a climatic cline. In particular, the Eurosiberian galls were smaller than the Mediterranean galls according to differences in climatic conditions. In the southern areas, the greater insolation regime does not allow the chestnut trees to be distributed at lower altitudes, but the high rainfall and humidity regime of the mountain enclaves allow their presence. These conditions of insolation and precipitation seem to influence the morphological characteristics of the galls of D. kuriphilus.
PB Cambridge University Press
SN 0007-4853; Electronic: 1475-2670
YR 2020
FD 2020-08-27
LK https://hdl.handle.net/20.500.14352/7916
UL https://hdl.handle.net/20.500.14352/7916
LA eng
NO Consejo Superior de Investigaciones Científicas (CSIC)/FEDER
DS Docta Complutense
RD 14 oct 2024