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Title

Variation in herbivory by Yponomeuta mahalebella on its only host plant Prunus mahaleb along an elevational gradient

AuthorsAlonso, Conchita
Issue Date1999
PublisherBlackwell Publishing
CitationEcological Entomology 24: 371- 379 (1999)
Abstract1. The effect of natural variation in abiotic conditions on the herbivory interaction between Prunus mahaleb (Rosaceae) and its monophagous folivore, larvae of Yponomeuta mahalebella (Lepidoptera, Yponomeutidae), was analysed for 2 consecutive years along an elevational gradient in Sierra de Cazorla, south-east Spain. 2. There was a negative correlation between site elevation and mean population herbivory level measured at the end of the growing period of Y. mahalebella. Mortality during larval development was higher at higher elevation sites, and mean adult body mass was higher in lower elevation populations. 3. Variation in temperatures recorded during the larval growth period at different altitudes was the only study factor related to abundance of Y. mahalebella larvae, neither differences in parasitisation rates nor plant features covaried significantly with herbivore abundance. 4. These results support the existence of geographical variation in plant-animal interactions in relation to environmental heterogeneity.
URIhttp://hdl.handle.net/10261/62234
DOI10.1046/j.1365-2311.1999.00211.x
Identifiersdoi: 10.1046/j.1365-2311.1999.00211.x
issn: 0307-6946
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