Show simple item record

dc.contributor.authorPina, Tatiana
dc.contributor.authorSá Argolo, Poliane
dc.contributor.authorUrbaneja, Alberto
dc.contributor.authorJacas Miret, Josep Anton
dc.date.accessioned2013-07-09T07:59:48Z
dc.date.available2013-07-09T07:59:48Z
dc.date.issued2012-05
dc.identifier.urihttp://hdl.handle.net/10234/69920
dc.description.abstractCover crops can serve as a reservoir of natural enemies by supplying alternative food sources as pollen. However, pollen quality and availability can modulate phytoseiid communities. In clementine trees associated with a cover crop of Festuca arundinacea Schreber, these communities were more diverse than those associated with a multifloral wild cover crop. As a consequence, the former had a better regulation of Tetranychus urticae Koch (Acari: Tetranychidae) populations than the latter. Longer provision of higher quality pollen in the multifloral cover relative to F. arundinacea is suspected to interfere with the biological control of T. urticae by specific phytoseiid predators (Phytoseiulus persimilis Athias-Henriot and Neoseiulus californicus (McGregor)) by enhancing the less efficient generalist pollen feeder Euseius stipulatus (Athias-Henriot) which is a superior intraguild predator. To determine whether pollen quality is behind these results, the effect of the provision of two different pollens (Carpobrotus edulis (L.) L. Bolus and F. arundinacea) on the efficacy of two phytoseiid species (E. stipulatus and N. californicus) to regulate T. urticae populations has been studied under semi-field conditions. Results suggest that pollen provision does not enhance the ability of these phytoseiids to reduce T. urticae populations. However, C. edulis pollen resulted in explosive increases of E. stipulatus numbers that did not occur with F. arundinacea pollen. Therefore, poor quality pollen may prevent pollen feeders from reaching high numbers in the field. This effect could benefit phytoseiid species suffering intraguild predation by E. stipulatus, the predominant phytoseiid species in Spanish citrus orchards and explain field results.ca_CA
dc.format.extent8 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.relation.isPartOfBiological Control, v. 61, issue 2 (May 2012)ca_CA
dc.subjectCover cropca_CA
dc.subjectConservation biological controlca_CA
dc.subjectPhytoseiidaeca_CA
dc.subjectOmnivoryca_CA
dc.subjectGeneralist predatorca_CA
dc.subjectSpecialist predatorca_CA
dc.titleEffect of pollen quality on the efficacy of two different life-style predatory mites against Tetranychus urticae in citrusca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp//dx.doi.org/10.1016/j.biocontrol.2012.02.003
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_CA


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record