Seasonal abundance and spatial distribution of the predator Macrolophus costalis and its prey Myzus persicae on tobacco

dc.contributor.author	Athanassiou, CG	en
dc.contributor.author	Kavallieratos, NG	en
dc.contributor.author	Ragkou, VS	en
dc.contributor.author	Buchelos, CTh	en
dc.date.accessioned	2014-06-06T06:45:40Z
dc.date.available	2014-06-06T06:45:40Z
dc.date.issued	2003	en
dc.identifier.issn	03342123	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2562
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0037219667&partnerID=40&md5=fd9b2818934c6b7fa98f226fb48c5c3f	en
dc.subject	Macrolophus costalis	en
dc.subject	Myzus persicae	en
dc.subject	Seasonal abundance	en
dc.subject	Spatial distribution	en
dc.subject	Tobacco	en
dc.subject.other	Aphididae	en
dc.subject.other	Aphidoidea	en
dc.subject.other	Hemiptera	en
dc.subject.other	Hexapoda	en
dc.subject.other	Insecta	en
dc.subject.other	Macrolophus	en
dc.subject.other	Miridae	en
dc.subject.other	Myzus	en
dc.subject.other	Myzus persicae	en
dc.subject.other	Nicotiana tabacum	en
dc.subject.other	Tithorea	en
dc.title	Seasonal abundance and spatial distribution of the predator Macrolophus costalis and its prey Myzus persicae on tobacco	en
heal.type	journalArticle	en
heal.publicationDate	2003	en
heal.abstract	Field studies were conducted to assess the population and the spatial dynamics of the predatory bug Macrolophus costalis Fieber (Hemiptera: Miridae) and of its prey, the aphid Myzus persicae (Sulzer) (Hemiptera: Aphidoidea), on tobacco. From an untreated tobacco field in Tithorea (central Greece), tobacco leaves were collected from the upper and the lower half of the plants from June until September, in 1999 and 2000. The numbers of M. costalis and M. persicae individuals per leaf were counted. Most aphids were observed during July and August (early and mid season), with densities dropping markedly in September. In contrast, M. costalis population densities increased late in the season (September). Significantly higher numbers of aphids were found on the upper half of the plants than on the lower half. In contrast, significantly more M. costalis individuals were observed on the lower half. Iwao's Regression Analysis was used in order to characterize the spatial pattern of the two species. According to this model, in both sampling seasons, aphids and M. costalis nymphs displayed an aggregated spatial pattern, while M. costalis adults were found to be randomly distributed among sampling units. Although more M. costalis individuals were recorded on leaves with relatively high aphid densities, this species did not react numerically to changes in prey density. In addition, a significant number of bugs were found on leaves with low aphid densities or no aphids at all.	en
heal.journalName	Phytoparasitica	en
dc.identifier.issue	1	en
dc.identifier.volume	31	en
dc.identifier.spage	8	en
dc.identifier.epage	18	en