Next Article in Journal
Enhancing the Estimation of Stem-Size Distributions for Unimodal and Bimodal Stands in a Boreal Mixedwood Forest with Airborne Laser Scanning Data
Next Article in Special Issue
Managing the Early Warning Systems of Invasive Species of Plants, Birds, and Mammals in Natural and Planted Pine Forests
Previous Article in Journal
Drought Impact on Phenology and Green Biomass Production of Alpine Mountain Forest—Case Study of South Tyrol 2001–2012 Inspected with MODIS Time Series
Previous Article in Special Issue
Encroachment Dynamics of Juniperus virginiana L. and Mesic Hardwood Species into Cross Timbers Forests of North-Central Oklahoma, USA
Open AccessArticle

Resistance of a Local Ecotype of Castanea sativa to Dryocosmus kuriphilus (Hymenoptera: Cynipidae) in Southern Italy

1
CNR, Institute for Sustainable Plant Protection, SS of Portici, 80055 Portici, Italy
2
Laboratorio di Entomologia ed Ecologia Applicata, Dipartimento Patrimonio, Architettura, Urbanistica, Università Mediterranea di Reggio Calabria, 89124 Reggio Calabria, Italy
3
Crea-Ofa (Olivicoltura, frutticoltura, agrumicoltura), 81100 Caserta, Italy
4
Servizio Fitosanitario Regione Campania, 80100 Napoli, Italy
*
Author to whom correspondence should be addressed.
Forests 2018, 9(2), 94; https://doi.org/10.3390/f9020094
Received: 16 January 2018 / Revised: 8 February 2018 / Accepted: 11 February 2018 / Published: 16 February 2018
(This article belongs to the Special Issue Ecology and Management of Invasive Species in Forest Ecosystems)
The cynipid Dryocosmus kuriphilus is the most impactful invasive pest of Castanea sativa copse woods and orchards currently reported from many European countries. A low impact solution for the containment of this pest could be the use of resistant trees. We examined the resistance of the red salernitan ecotype (RSE) of C. sativa to D. kuriphilus and carried out a morphological characterization of this ecotype’s plants and fruits. From November 2015 to May 2017 we observed and recorded the percentage of infested buds, healthy leaves and shoots on about 50 chestnut trees, together with the number, size, and position of galls, and the number of eggs laid by the gall wasps into the buds and the number of larvae inside the galls. We showed a progressive mortality of cynipid larvae up to the starting point of galls development when almost total larval mortality was recorded. This suggests that RSE trees have a moderate resistance to D. kuriphilus; however, resistance acts at different levels, resulting in fewer eggs being deposited, a low number of larvae reaching the complete development, and a low number of galls on the branches. Moreover, the galls on resistant trees are smaller than the susceptible ones, so the larvae are more exposed to parasitization. View Full-Text
Keywords: Asian cynipid gall wasp; biological control; chestnut; invasive species; parasitization; resiliency; resistance Asian cynipid gall wasp; biological control; chestnut; invasive species; parasitization; resiliency; resistance
Show Figures

Figure 1

MDPI and ACS Style

Nugnes, F.; Gualtieri, L.; Bonsignore, C.P.; Parillo, R.; Annarumma, R.; Griffo, R.; Bernardo, U. Resistance of a Local Ecotype of Castanea sativa to Dryocosmus kuriphilus (Hymenoptera: Cynipidae) in Southern Italy. Forests 2018, 9, 94.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop