02075nas a2200241   4500008004100000245008500041210006900126260001200195300001200207490000700219520132300226653001201549653001601561653001201577653001001589653002001599653001701619100002201636700001801658700002101676700002101697856011501718       2001                        eng d00aDistribution and migration of insects and mites in flat storage containing wheat0 aDistribution and migration of insects and mites in flat storage   c2001///  a379-3920 v293 aStudies were conducted in a flat storeroom in central Greece, filled with approx. 90 tons of wheat, in order to evaluate insect and mite species abundance, and changes in population density and distribution among sampling units and locations. The surface of the grain bulk was divided into two sampling zones: the central and the peripheral (edge). At 10-day intervals, five wheat samples were taken from the central zone and eight from the peripheral zone, with a non-partitioned grain trier (1.6-m length, 250-g capacity). Fifteen insect species and 12 mite taxa were found during the sampling period, (June 1999-Feb. 2000). The most abundant insect species were Sitophilus oryzae (L.), Cryptolestes ferrugineus (Stephens), Tribolium castaneum (Herbst) and Latheticus oryzae Waterhouse; the most abundant mite species were Acarus siro L., Lepidoglyphus destructor (Shrank), and the predators Blattisocius tarsalis (Berlese) and B. keegani Fox. Grain temperature decreased during the storage period, more slowly in the central than peripheral zone; grain moisture content increased. The highest population densities for both insects and mites were recorded during September and October. The most numerous species of insects and mites showed an aggregated spatial pattern, as indicated by Iwao's Patchiness Regression.10aGeneral10aGrain trier10ainsects10amites10aSpatial pattern10astored wheat1 aAthanassiou, C.G.1 aPalyvos, N.E.1 aEliopoulos, P.A.1 aPapadoulis, G.T.  uhttps://icgf.myspecies.info/content/distribution-and-migration-insects-and-mites-flat-storage-containing-wheat