scholarly journals Synthesis Method for Thiosulfonate and Report of Its Insecticidal Activity in Anagasta kuehniella (Lepidoptera: Pyralidae)

2012 ◽  
Vol 13 (12) ◽  
pp. 15241-15251 ◽  
Author(s):  
Edson dos Santos ◽  
Fernando Gonçalves ◽  
Paulo Prado ◽  
Daniele Sasaki ◽  
Dênis de Lima ◽  
...  
2009 ◽  
Vol 52 (3) ◽  
pp. 653-664 ◽  
Author(s):  
Luciana Barboza Silva ◽  
Walciane Silva ◽  
Maria Ligia Rodrigues Macedo ◽  
Marize Terezinha Lopes Pereira Peres

Hundreds of plant species have been studied in order to find out the active ingredient responsible for their insecticidal activity against the pests of economic importance. To verify the insecticidal activity in the husk of stem of Croton urucurana Baillon 1864 (Euphorbiaceae) against Anagasta kuehniella Zeller 1879 (Lepidoptera: Pyralidae), the methanolic (EMeOH) extract, dichloromethane fraction (FDM), ethyl acetate fraction (FAE) and crude resin, incorporated into an artificial diet were evaluated. EMeOH (0.5, 1.0 and 2.0%) and crude resin (2.0%) interfered with neither the weight nor the survival of fourth instar larvae and other analyzed parameters. FDM (2.0%) fraction caused mortality of 65%, and the artificial diet containing 2.0, 1.0 and 0.5% FAE caused 100, 55 and 68% mortality respectively when compared with the control, confirming the least efficiency rates of food conversion for FDM(2.0%) and FAE(1.0%). The tryptic analysis performed with the midgut fluid of fourth-instar larvae demonstrated that tryptic and chymiotryptic activities for the larvae fed artificial diet containing EMeOH and crude resin were not different.


2012 ◽  
Vol 30 (1) ◽  
pp. 101-108
Author(s):  
Ariana Lisboa Meira ◽  
Dirceu Pratissoli ◽  
Ricardo Polansysk ◽  
Leonardo Madgan

2003 ◽  
Vol 63 (4) ◽  
pp. 647-653 ◽  
Author(s):  
H. N. Oliveira ◽  
J. C. Zanuncio ◽  
D. Pratissoli ◽  
M. C. Picanço

Individuals of two populations of Trichogramma maxacalii (Hymenoptera: Trichogrammatidae) were collected from eggs of Euselasia apisaon (Lepidoptera: Riodinidae), a lepidopteran defoliator of Eucalyptus, in plantations in the states of São Paulo and Minas Gerais, Brazil. This study investigated the sex ratio, number of parasitoids per egg, and longevity of individuals of these two populations of T. maxacalii, when this parasitoid was reared receiving eggs of the factitious host Anagasta kuehniella (Lepidoptera: Pyralidae) in different periods after emergence, and with or without honey. Sex ratio of T. maxacalii varied from 0.44 to 0.60, and was affected by the interaction between populations, availability of food (honey), and length of time in which the parasitoid stayed without host eggs after their emergence. The population of T. maxacalii collected in São Paulo produced a larger number of individuals per egg of the host A. kuehniella and lived longer when fed.


1999 ◽  
Vol 28 (3) ◽  
pp. 455-459 ◽  
Author(s):  
Carlos M. Kato ◽  
Vanda H.P. Bueno ◽  
Jair C. Moraes ◽  
Alexander M. Auad

A biologia de Hippodamia convergens Guérin-Meneville foi estudada utilizando-se ovos de Anagasta kuehniella (Zeller) como alimento das larvas, em comparação com dieta comumente utilizada, constituída de adultos dos pulgões Schizaphis graminum (Rondani) e Brachycaudus (Appelia) schwartzi Börner. Para os adultos do predador, utilizaram-se adultos do pulgão S. graminum. Os experimentos foram conduzidos a 25 ± 1°C, UR de 70 ± 10% e fotofase de 12 h. O período embrionário, quando as larvas foram alimentadas com as três dietas foi de 3,1; 3,2 e 3,2 dias respectivamente. A duração do período de larva a adulto foi maior na dieta constituída de ovos de A. kuehniella (19,5 dias), entretanto a viabilidade para esse período não diferiu entre as três dietas testadas. Para a fase adulta do predador oriundo de larvas criadas sob os três regimes alimentares, todos os parâmetros reprodutivos e a longevidade foram estatisticamente iguais. Assim, verificou-se que ovos de A. kuehniella podem ser considerados uma dieta em potencial, em substituição aos pulgões S. graminum e B. schwartzi na criação de larvas de H. convergens.


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