Potencial de alimentação de Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) em diferentes densidades de Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae)

dc.contributor.authorAuad, Alexander M. [UNESP]
dc.contributor.authorFreitas, Sérgio de [UNESP]
dc.contributor.authorBarbosa, Leonardo R. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:14:39Z
dc.date.available2014-05-20T13:14:39Z
dc.date.issued2003-01-01
dc.description.abstractFeeding potential of Chrysoperla externa (Hagen) (Neuroptera, Chrysopidae) in different densities of Uroleucon ambrosiae (Thomas) (Hemiptera, Aphididae). The feeding potential of 2nd and 3rd instar larvae of Chrysoperla externa (Hagen, 1861) in relation to different densities of 30, 40 and 50 nymphs of Uroleucon ambrosiae (Thomas, 1878) at 3rd and 4th instars was evaluated. The treatments were individualized into 2.5 cm in diameter and 8.5 cm tall flat bottom glass vials and maintained in a controlled environmental chamber at 25±2 ºC temperature, 70±10% RH and 14 h photophase. A completely randomized experimental design with 10 replications was used. The consumption of the prey nymphs by the predator larvae was evaluated after 1, 2, 4, 8, 16 and 24 h from the beginning of the experiment and at every subsequent 24 h period until 2nd instar larvae molted or 3rd instar larvae pupated. Results have shown that for 2nd instar larvae, during the 1 h to 24 h period, there was a decreasing prey consumption at the 30 and 40 prey densities. However an increase in the consumption at the 50 prey density was observed. After this period, C. externa larvae presented a progressive increase on nymphs consumption as a function of the prey density. The same occurred with de 3rd instar predator larvae in all treatments. When daily mean consumption was evaluated the predator/prey ratio was 1:23, 1:27 and 1:33 for 2nd instar larvae and 1:27, 1:33 and 1:41 for 3rd instar larvae at 30, 40 and 50 nymph densities, respectively.en
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Entomologia
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias Departamento de Entomologia
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent15-18
dc.identifierhttp://dx.doi.org/10.1590/S0085-56262003000100003
dc.identifier.citationRevista Brasileira de Entomologia. Sociedade Brasileira de Entomologia, v. 47, n. 1, p. 15-18, 2003.
dc.identifier.doi10.1590/S0085-56262003000100003
dc.identifier.fileS0085-56262003000100003.pdf
dc.identifier.issn0085-5626
dc.identifier.scieloS0085-56262003000100003
dc.identifier.urihttp://hdl.handle.net/11449/2052
dc.language.isopor
dc.publisherSociedade Brasileira de Entomologia
dc.relation.ispartofRevista Brasileira de Entomologia
dc.relation.ispartofjcr0.880
dc.relation.ispartofsjr0,406
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectAphidsen
dc.subjectBiological controlen
dc.subjectGreen lacewingen
dc.subjectPredationen
dc.titlePotencial de alimentação de Chrysoperla externa (Hagen, 1861) (Neuroptera, Chrysopidae) em diferentes densidades de Uroleucon ambrosiae (Thomas, 1878) (Hemiptera, Aphididae)pt
dc.typeArtigo
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentFitossanidade - FCAVpt

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