Pesquisa Agropecuária Brasileira (2003) 38, 555-560

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Terezinha Monteiro dos Santos, Liliane Karla Figueira, Arlindo Leal Boiça Júnior, Fernando Mesquita Lara and Ivan Cruz (2003)
Efeito da alimentação de Schizaphis graminum com genótipos de sorgo no desenvolvimento do predador Cycloneda sanguinea
[Effect of Schizaphis graminum feeding on sorghum genotypes on the development of its predator Cycloneda sanguinea]
Pesquisa Agropecuária Brasileira 38 (5), 555-560
Abstract: The aphid Schizaphis graminum (Rondani) (Hemiptera: Aphididae) is one of the main pests of sorghum crop. The objective of this work was to evaluate the effect of this aphid feeding on resistant and susceptible sorghum genotypes on the development of its predator Cycloneda sanguinea (Linnaeus) (Coleoptera: Coccinellidae). The aphid was reared on leaves of sorghum genotypes GR 11111 and TX 430 x GR 111, resistant, GB 3B, moderately resistant, and BR 007B, susceptible to the hemipterous. Larvae of C. sanguinea were fed ad libitum on S. graminum nymphs and adults, daily. The duration and survival of developmental phases of C. sanguinea were not significantly influenced by genotype. Only the fourth instar, the larval phase and the larvaeadult period duration were affected. The weight of C. sanguinea larvae of second instar was not affected by sorghum genotype. For both instars and adult phase, this parameter was differentiate due to each genotype used as host to the aphid. The resistant genotypes GR 11111 and TX 430 x GR 111 do not affect adversely C. sanguinea development and fecundity, during one generation. These genotypes show compatibility with the predator, allowing the S. graminum management on sorghum crop.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
Full text of article
Database assignments for author(s): Ivan Cruz

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
resistance/tolerance/defence of host
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Schizaphis graminum Sorghum (crop)
Cycloneda sanguinea (predator) Schizaphis graminum Sorghum (crop)
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