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Spatio‐temporal analysis of the relationship between landscape structure and the olive fruit fly Bactrocera oleae ( D iptera: T ephritidae)
Author(s) -
Ortega Marta,
Pascual Susana
Publication year - 2014
Publication title -
agricultural and forest entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.755
H-Index - 55
eISSN - 1461-9563
pISSN - 1461-9555
DOI - 10.1111/afe.12030
Subject(s) - tephritidae , pest analysis , abundance (ecology) , biology , diversity index , ecology , bactrocera , perennial plant , horticulture , species richness
Landscape ecology studies on pest control have focused mainly on annual crops and natural enemies, whereas more studies measuring pest pressure on perennial crops are needed. The relationships between the abundance and damage by Bactrocera oleae ( R ossi) and different landscape indices were analyzed using data gathered by a regional network during 2009, 2010 and 2011 in J aén, S pain. Eleven indices of landscape composition and configuration calculated at six different spatial scales (radii of 500, 600, 750, 1000, 1500 and 2000 m) were used in correlation analyses. Significant correlations between abundance and some indices were observed primarily during J ulian days 236–264 (24 A ugust to 21 S eptember) 2010. These correlations were negative with edge density, the S hannon landscape diversity index and the number of patches, and were positive with patch size standard deviation and mean patch size. Linear mixed‐effects models were used to identify the indices most strongly related to the abundance of olive flies. These indices were mean patch size, edge density at 500–750 m and the S hannon landscape diversity index, as well as the number of patches at 1000–2000 m. These results suggest that greater landscape complexity may contribute to reduced numbers of B. oleae . More studies are needed to establish how to reduce olive fruit fly damage.