Spanish Journal of Agricultural Research (2011) 9, 570-579

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A. Jimenez-Pino, L. Maistrello, M.A. Lopez-Martinez, M.E. Ocete-Rubio and F.J. Soria-Iglesias (2011)
Spatial distribution of Cydia fagiglandana (Zeller) in an exploited holm oak (Quercus ilex L.) forest
Spanish Journal of Agricultural Research 9 (2), 570-579
Abstract: Cydia fagiglandana (Zeller) (Lepidoptera: Tortricidae) is a carpophagous insect which affects the quality and viability of the fruits of beech, oak and chestnut trees. The majority of the works on this species in holm oak woods dealt with assessing its damages. No investigations have yet been performed on the spatial distribution of this pest, although this element is one of the key features to take in account in order to develop proper integrated management programs. The present study, performed during a four years period in an exploited holm oak forest area in Southern Spain, investigated the spatial distribution of C. fagiglandana integrating classic methods based on dispersion rates and distribution fitting together with the elaboration of population density maps based on GIS. Our results showed that the infestation rate progressively decreased from 0.339 in 2001 to 0.102 in 2004. Density maps for C. fagiglandana also show an heterogeneous and aggregated distribution of this insect and a spatio-temporal stability in this area. It is concluded that during the four years of the study inter-specific competition with the weevil Curculio elephas was the factor that most affected the spatial distribution of C. fagiglandana in the experimental plot. (Full text free for older issues.)
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Full text of article
Database assignments for author(s): A. Jimenez-Pino, Lara Maistrello

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
population dynamics/ epidemiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Curculio elephas Oak (Quercus) Spain (continental)
Cydia fagiglandana Oak (Quercus) Spain (continental)