Spatial associations of insects and mites in stored wheat

dc.contributor.author	Athanassiou, CG	en
dc.contributor.author	Kavallieratos, NG	en
dc.contributor.author	Sciarretta, A	en
dc.contributor.author	Palyvos, NE	en
dc.contributor.author	Trematerra, P	en
dc.date.accessioned	2014-06-06T06:51:28Z
dc.date.available	2014-06-06T06:51:28Z
dc.date.issued	2011	en
dc.identifier.issn	00220493	en
dc.identifier.uri	http://dx.doi.org/10.1603/EC10376	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/5527
dc.subject	Blattisocius tarsalis	en
dc.subject	Cryptolestes ferrugineus	en
dc.subject	Lepidoglyphus destructor	en
dc.subject	Plodia interpunctella	en
dc.subject	SADIE	en
dc.subject.other	animal	en
dc.subject.other	article	en
dc.subject.other	cereal	en
dc.subject.other	epidemiology	en
dc.subject.other	food contamination	en
dc.subject.other	Greece	en
dc.subject.other	insect	en
dc.subject.other	mite	en
dc.subject.other	physiology	en
dc.subject.other	population density	en
dc.subject.other	time	en
dc.subject.other	wheat	en
dc.subject.other	Animals	en
dc.subject.other	Cereals	en
dc.subject.other	Food Contamination	en
dc.subject.other	Greece	en
dc.subject.other	Insects	en
dc.subject.other	Mites	en
dc.subject.other	Population Density	en
dc.subject.other	Sampling Studies	en
dc.subject.other	Time Factors	en
dc.subject.other	Triticum	en
dc.subject.other	Acari	en
dc.subject.other	Ascidae	en
dc.subject.other	Blattisocius tarsalis	en
dc.subject.other	Coleoptera	en
dc.subject.other	Cryptolestes ferrugineus	en
dc.subject.other	Glycyphagidae	en
dc.subject.other	Hexapoda	en
dc.subject.other	Laemophloeidae	en
dc.subject.other	Lepidoglyphus destructor	en
dc.subject.other	Lepidoptera	en
dc.subject.other	Mesostigmata	en
dc.subject.other	Plodia interpunctella	en
dc.subject.other	Pyralidae	en
dc.subject.other	Triticum aestivum	en
dc.subject.other	Triticum turgidum subsp. durum	en
dc.title	Spatial associations of insects and mites in stored wheat	en
heal.type	journalArticle	en
heal.identifier.primary	10.1603/EC10376	en
heal.publicationDate	2011	en
heal.abstract	The spatial association pattern of insect and mite populations in a steel bin containing stored wheat, Triticum durum Desf., in central Greece, was studied using the Spatial Analysis by Distance IndicEs (SADIE). The monitoring was carried out for 7 mo by using grain trier samples and probe traps. The most abundant insect species were Cryptolestes ferrugineus (Stephens) (Coleoptera: Laemophloeidae) and Plodia interpunctella (Hbner) (Lepidoptera: Pyralidae). For mites, the most abundant species were the phytophagous Lepidoglyphus destructor (Schrank) (Acari: Glycyphagidae) and the predator Blattisocius tarsalis (Berlese) (Mesostigmata: Ascidae). Both for P. interpunctella and C. ferrugineus, trap catches were associated with numbers of individuals in the trier samples, but the overall association index calculated among trap and sample counts was significant only in the 33% of trap-sample pairs of values. Generally, P. interpunctella had the main patch areas in the central part of the bin, with few exceptions, during the entire monitoring period. Similar trends also were noted in the case of C. ferrugineus, which was clearly aggregated in the center of the grain mass. Spatial association maps indicated a stable positive association in the central part of the bin, but in most of the other sampling zones the association was negative. However, distribution of L. destructor, based on trier samples, indicated increased presence in peripheral zones of the grain sampling area. Moreover, B. tarsalis presented the most dispersed distribution among all four species. For each species, the association between two consecutive samplings was significant in the majority of cases, indicating a stable spatial pattern. Finally, B. tarsalis was spatially associated to a higher degree with the insects found rather than with L. desctructor. Moreover, there was no association of insect and mite presence with grain temperature and moisture content. The results of the current study suggest that the coexistence of insects and mites in bulked grain follows a complex pattern, with significant interactions, especially in the case of mite predators, which are spatially associated with insect species. © 2011 Entomological Society of America.	en
heal.journalName	Journal of Economic Entomology	en
dc.identifier.issue	5	en
dc.identifier.volume	104	en
dc.identifier.doi	10.1603/EC10376	en
dc.identifier.spage	1752	en
dc.identifier.epage	1764	en