Some aspects of the entomological fauna of Romagna in relation to pesticide pollution. 2. Fruit orchards (Preliminary note)

Celli, G.; Molle, G. dalle

Bollettino dell' Istituto di Entomologia ' Guido Grandi' della Universita degli Studi di Bologna 39: 37-47


Accession: 001686974

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The results are given of surveys in 1980-82 for Apis mellifera, wild bees and syrphids in orchards containing a total of 9 species of fruit trees and bushes in 2 main areas of Forli Province in Italy characterized by differing intensities of insecticide application, industrialization and human population density. Pollinating insects, especially the wild species, foraged mainly between noon and 14.00 h but were always less abundant in areas of concentrated human activity, owing both to industrial pollution and to intense insecticide pressure from farms and commercial market-gardens. It is suggested that syrphids and wild bees could be useful biological indicators of the degree of chemical contamination in a given locality.