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Biologia comparada e comportamento de Tetranychus urticae Koch (Acari: Tetranychidae) e Phytoseiulus macropilis (Banks) (Acari: Phytoseiidae) em algodoeiro bollgardTM e Isolinha não-Transgênica Neotropical Entomology
Esteves Filho,Alberto B; Oliveira,José V de; Torres,Jorge B; Gondim Jr,Manoel G C.
The two spotted spider mite, Tetranychus urticae Koch, is a nontarget herbivore of Bt-cotton, but acquires and accumulates higher levels of Cry toxin than that expressed by transgenic plants. This work investigated the development and reproduction of T. urticae and of the predator Phytoseiulus macropilis Banks, during three successive generations looking for potential nontarget effect. In addition, behavioral studies on feeding preference, oviposition, and predation were carried out on Bt and non-Bt cottons. The development and reproduction of T. urticae and P. macropilis was conducted using leaf discs of Bt and non-Bt cottons. Arena containing leaf discs from both cotton types connected by a slide coverslip were also used in the behavioral studies....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Transgenic cotton; Cry1Ac; Tritrophic interaction; Nontarget arthropod.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300005
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Trichogramma pretiosum attraction due to the Elasmopalpus lignosellus damage in maize PAB
Xavier,Luciane Modenez Saldivar; Laumann,Raúl Alberto; Borges,Miguel; Magalhães,Diego Martins; Vilela,Evaldo Ferreira; Blassioli-Moraes,Maria Carolina.
The objective of this work was to evaluate if corn plants damaged by the lesser cornstalk borer (Elasmopalpus lignosellus) larvae release volatile organic compounds capable of attracting the egg parasitoid Trichogramma pretiosum. The treatments consisted of plants subjected to harm caused by E. lignosellus larvae, plants subjected to mechanical damage, and undamaged plants. The parasitoid was more attracted by the volatiles released by the insect damaged plants than to those released by undamaged corn plants, after 24 and 72 hours. The volatiles (Z)-3-hexenyl acetate, β-pinene, β-myrcene, (E)-4,8-dimethylnona-1,3,7-triene, and benzothiazole were released in significantly larger quantities by damaged plants. Volatiles released by corn plants damaged by E....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg parasitoid; Tritrophic interaction; Semiochemicals; Volatile organic compounds.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000600002
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Biological aspects of the beetle Delphastus davidsoni fed with whitefly eggs laid on tomato genotypes Scientia Agricola
Oriani,Maria Auxiliadora de Godoy; Vendramim,José Djair.
Many plant breeding programs have incorporated plant resistance characteristics without considering how this resistance may affect the natural enemies of plant pests. We evaluated the biological aspects of Delphastus davidsoni (Gordon) fed with Bemisia tabaci B biotype eggs laid on tomato genotypes with different trichome densities and types. On LA1335 and NAV1062, the development periods were 21 days, and the larval mortality rates were 46.7 % and 28.9 %, respectively; on IAC294, the development period was 26 days, and the mortality rate 88.9 %. None of the larvae completed development when fed with whitefly eggs laid on PI134418. Most of the deaths took place in the second instar stage because the larvae became trapped in the glandular trichomes; similar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum lycopersicum; Lady beetle; Plant resistance; Trichomes; Tritrophic interaction.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000500003
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A new species of Omphale Haliday 1833 (Hymenoptera: Eulophidae) from Brazil, parasitic on gall-midges on Croton floribundus Spreng (Euphorbiaceae) Biota Neotropica
Gomes,Gabriela Cristina; Franco,Maíce Siqueira; Hansson,Christer.
A tritrophic relationship involving the plant Croton floribundusSpreng (Euphorbiaceae), an unidentified gall-midge belonging to eitherClinodiplosis Kieffer 1895 or Alycaulus Rübsaamen 1916 (Diptera: Cecidomyiidae), and a new species of parasitic wasp belonging toOmphale Haliday 1833 (Hymenoptera: Eulophidae) is described. The gall andOmphale japii sp. nov., are described and illustrated. This is the third record ofOmphale from Brazil and the new species is compared to otherOmphale species from the Neotropical region.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gall-maker; Cecidomyiidae; Parasitoid; Tritrophic interaction; Neotropical.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000300034
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