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| García,Matías; Sosa,Marta E.; Donadel,Osvaldo J.; Giordano,Oscar S.; Tonn,Carlos E.. |
| In order to evaluate the allelochemical activity of some sesquiterpenes isolated from the native plant Tessaria absinthioides (Hook. et Arn.) DC, and some semi synthetic derivatives against Tenebrio molitor L. larvae, we have developed bioassays directed to quantify repellency, larval mortality, and its effects on the development. Although costic aldehyde caused the maximum repellent effect, all the compounds showed a significant effect at some dose or time, indicating behavioral avoidance. The topical application of costic aldehyde produced the largest increase on the duration of the pupal stage. Tessaric acid exhibited the highest toxicity by topical application at the experiment closure. Both eremophilane-1(10),2,11(13)-triene-12-oic, and <img... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sesquiterpenes; Tenebrio molitor; Repellency; Development; Mortality. |
| Ano: 2003 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802003000200002 |
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| Pungitore,Carlos R.; García,Matías; Gianello,José C.; Tonn,Carlos E.; Sosa,Marta E.. |
| Duration of the pupal stage, toxic activity and nutritional indices induced by oleanolic acid (I), maslinic acid (II), and daucosterol (III) isolated from the native plant Junellia aspera and chemical derivatives, were determinated on larvae, and adults of Tribolium castaneum (Herbst). The current study shows that these triterpenes acts as acute toxic compounds when were applied topically and/or incorporated into the food of the red flour beetle. Nevertheless, no activity related with the nutritional status of this insect was produced. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triterpenes; Toxic effect; Tribolium castaneum; Junellia aspera. |
| Ano: 2005 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802005000100010 |
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