Rates of population increase, abundance, and life stage distribution of Rhynchites cribripennis (Coleoptera: Attelabidae) on trees and in the soil in an olive grove

dc.contributor.author	Lykouressis, D	en
dc.contributor.author	Kapsaskis, A	en
dc.contributor.author	Perdikis, D	en
dc.contributor.author	Vatos, A	en
dc.contributor.author	Fantinou, A	en
dc.date.accessioned	2014-06-06T06:46:05Z
dc.date.available	2014-06-06T06:46:05Z
dc.date.issued	2004	en
dc.identifier.issn	00220493	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/2786
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-2342655782&partnerID=40&md5=d7c5c4b0329f4d6b3021be767c1976ba	en
dc.subject	Biology	en
dc.subject	Olive trees	en
dc.subject	Rate of increase	en
dc.subject	Rhynchites cribripennis	en
dc.subject	Weevil	en
dc.subject.other	animal	en
dc.subject.other	article	en
dc.subject.other	beetle	en
dc.subject.other	growth, development and aging	en
dc.subject.other	insect	en
dc.subject.other	larva	en
dc.subject.other	life cycle	en
dc.subject.other	olive tree	en
dc.subject.other	population density	en
dc.subject.other	season	en
dc.subject.other	soil	en
dc.subject.other	Animals	en
dc.subject.other	Beetles	en
dc.subject.other	Larva	en
dc.subject.other	Life Cycle Stages	en
dc.subject.other	Olea	en
dc.subject.other	Population Density	en
dc.subject.other	Pupa	en
dc.subject.other	Seasons	en
dc.subject.other	Soil	en
dc.subject.other	Animalia	en
dc.subject.other	Attelabidae	en
dc.subject.other	Coleoptera	en
dc.subject.other	Insecta	en
dc.subject.other	Rhynchites	en
dc.title	Rates of population increase, abundance, and life stage distribution of Rhynchites cribripennis (Coleoptera: Attelabidae) on trees and in the soil in an olive grove	en
heal.type	journalArticle	en
heal.publicationDate	2004	en
heal.abstract	The seasonal population abundance of Rhynchites cribripennis (Desbrochers) adults on olive trees was studied by collecting samples from an olive grove on the island of Zakynthos, Greece, from April 1994 to the end of July 1995. Moreover, the population abundance of larvae, pupae, and adults of R. cribripennis was recorded in soil samples from two soil depths (0-4 and 4-8 cm) from October 1994 to October 1995. Results showed that adult populations increased considerably on trees during May and June and peaked on 16 June (19.9 adults per twig) and 8 July (7.7 adults per twig) in 1994 and 1995, respectively. In 1994, no significant differences were found in the number of adults sampled from the different tree quadrants (northwest [NW], northeast [NE], southwest [SW], and southeast [SE]). However, in 1995, adult numbers in the NW quadrant of trees were significantly higher than those in the SE or SW quadrants. In soil samples, larvae were recorded throughout the sampling period with the highest numbers occurring in December, 2.4 larvae per soil sample, whereas pupae were found in lowest numbers in October and November. Adults were present in the soil samples from December to May, but the highest numbers were recorded in December, with a peak of one adult per sample. The number of adults was significantly higher, and that of larvae numerically higher, in the upper compared with lower soil layer, whereas pupae were found with similar numbers in both soil layers. Results of these studies suggest that this weevil exhibits a prolonged larval diapause and a 2-yr life cycle. The ecological implications of this behavior are discussed. Moreover, a prediction of the highest adult population on trees was estimated by taking into account the rate of increase of adult numbers in the early period of adult occurrence on trees.	en
heal.journalName	Journal of Economic Entomology	en
dc.identifier.issue	2	en
dc.identifier.volume	97	en
dc.identifier.spage	316	en
dc.identifier.epage	320	en