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Parasitoid community of Protopulvinaria pyriformis (Hemiptera: Coccidae) on laurel: Influence of host size, seasonal trend and aggregation on its main parasitoid

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Parasitoid community of Protopulvinaria pyriformis (Hemiptera: Coccidae) on laurel: Influence of host size, seasonal trend and aggregation on its main parasitoid

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dc.contributor.author Beltrà Ivars, Aleixandre es_ES
dc.contributor.author Soto Sánchez, Antonia Isabel es_ES
dc.contributor.author Tena Barreda, Alejandro es_ES
dc.date.accessioned 2014-01-10T09:15:42Z
dc.date.issued 2011
dc.identifier.issn 1049-9644
dc.identifier.uri http://hdl.handle.net/10251/34845
dc.description.abstract The phenology of Protopulvinaria pyriformis (Cockerell) (Hemiptera: Coccidae) and its parasitoid complex were studied on laurel Laurus nobilis L. in urban green spaces of Eastern Spain from March 2008 to January 2010. P. pyriformis is bivoltine, gravid females peaked on spring and fall and the 2nd and 3rd instars were present throughout the year. The natural parasitoid community of P. pyriformis consisted of three primary parasitoids and four facultative hyperparasitoid species. Metaphycus helvolus (Compere) (Hymenoptera: Encyrtidae) accounted for 98% of the parasitoids recovered. Although M. helvolus parasitized all the scale instars, it attacked P. pyriformis mostly at the end of the spring, when scales were larger. M. helvolus behaved as a solitary parasitoid and its secondary sex ratio was male biased when it parasitized the 2nd instar. Its secondary sex ratio became female biased when it parasitized scales larger than 1.1 mm. M. helvolus behaved as a facultative gregarious parasitoid and its secondary sex ratio was always female biased (0.3 males per scale) when it parasitized the 3rd instar and the adults. The number of eggs allocated per host, as well as the number of parasitoids that emerged, increased with scale size. Mostly, broods of two to four parasitoids emerged from these scales. M. helvolus showed inverse host density dependence, parasitism decreased as the number of scales per leaf increased. The implications of these results on the biological control of this and other soft scales are discussed. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Biological Control es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Metaphycus-Helvolus Hymenoptera es_ES
dc.subject Mediterranean Black Scale es_ES
dc.subject Saissetia-Oleae Hom es_ES
dc.subject Precise Sex-Ratios es_ES
dc.subject Soft Scale es_ES
dc.subject Biological-Control es_ES
dc.subject Egg Load es_ES
dc.subject Homoptera es_ES
dc.subject Encyrtidae es_ES
dc.subject Chalcidoidea es_ES
dc.subject.classification ECOSISTEMAS AGROFORESTALES (UPV) es_ES
dc.subject.classification PRODUCCION VEGETAL es_ES
dc.title Parasitoid community of Protopulvinaria pyriformis (Hemiptera: Coccidae) on laurel: Influence of host size, seasonal trend and aggregation on its main parasitoid es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1016/j.biocontrol.2011.04.003
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Ecosistemas Agroforestales - Departament d'Ecosistemes Agroforestals es_ES
dc.description.bibliographicCitation Beltrà Ivars, A.; Soto Sánchez, AI.; Tena Barreda, A. (2011). Parasitoid community of Protopulvinaria pyriformis (Hemiptera: Coccidae) on laurel: Influence of host size, seasonal trend and aggregation on its main parasitoid. Biological Control. 58(1):36-43. doi:10.1016/j.biocontrol.2011.04.003 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1016/j.biocontrol.2011.04.003 es_ES
dc.description.upvformatpinicio 36 es_ES
dc.description.upvformatpfin 43 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 58 es_ES
dc.description.issue 1 es_ES
dc.relation.senia 218204


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