2011
DOI: 10.1590/s0037-86822011005000010
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Abstract: INTRODUÇÃO: Dengue é um importante problema de saúde pública, em vários países, e tem como principal vetor o Aedes aegypti, mosquito mais adaptado às áreas urbanizadas. Apresenta-se, pela primeira vez, as alterações ultraestruturais em larvas de 3º estádio, desse mosquito, causadas pelos larvicidas naturais, um diterpeno labdano, extraído de Copaifera reticulata, e uma fração rica em taninos catéquicos, extraída de Magonia pubescens, evidenciando o mecanismo de ação dessas substâncias. MÉTODOS: Os experimentos… Show more

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Cited by 29 publications
(21 citation statements)
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“…Although there are contradictory results about the effect of dissolved tannins on mosquito development (Bradshaw & Holzapfel, 1986; Copeland & Craig, 1990; Mercer, 1991), differential detrimental effects of dietary tannins have been reported for culicid species, and high concentrations of tannins have shown to be lethal for Ae. aegypti larvae by cell destruction in the midgut (Valotto et al , 2011). Consequently, tanning-lignin content may be a selective factor responsible for the lower abundances and proportion of Ae.…”
Section: Discussionmentioning
confidence: 99%
“…Although there are contradictory results about the effect of dissolved tannins on mosquito development (Bradshaw & Holzapfel, 1986; Copeland & Craig, 1990; Mercer, 1991), differential detrimental effects of dietary tannins have been reported for culicid species, and high concentrations of tannins have shown to be lethal for Ae. aegypti larvae by cell destruction in the midgut (Valotto et al , 2011). Consequently, tanning-lignin content may be a selective factor responsible for the lower abundances and proportion of Ae.…”
Section: Discussionmentioning
confidence: 99%
“…Consequently, the structures responsible for the autophagic processes would become more numerous, in an attempt to eliminate the damaged elements. The occurrence of this process has also been reported by Barreto et al (2006), in A. aegypti larvae after exposure to ethanolic extract of Sapindus saponaria Lin (Sapindaceae), Valotto et al (2011), in A. aegpti larvae subjected to the natural compound obtained from Magonia pubescens (Sapindaceae) and by Scudeler and Santos (2013), in Ceraeochrysa claveri larvae treated with Neem oil.…”
Section: Discussionmentioning
confidence: 62%
“…Therefore, the basal membrane was almost completely detached from the basal lamina, probably due to some fault in the cell-cell/cell-matrix interaction, causing the destruction of the adhesion complexes and consequent loss of adhesion. The detachment of the cells from the basal lamina was reported by Valotto et al (2011) in Aedes aegypti larvae subjected to the catequic tannin isolated from the plant Magonia pubesncens and by Ghribi et al (2012) in Spodoptera littoralis after exposure to biosurfactants.…”
Section: Discussionmentioning
confidence: 97%
“…Cyclopaldic acid, sphaeropsidin A (Cimmino et al ., ), 12‐hydroxyabieta‐8,11,13‐triene skeleton diterpenoid, ferruginol (Roa‐Linares et al , ), and diterpenes from Copaifera reticulata (Geris et al ., ) and Trigonostemon cherrieri (Allard et al ., ) are found to act against A. aegypti . Additionally, diterpenoids from C. reticulata caused the death of A. aegypti larvae by cell destruction in the midgut (Valotto et al , ).…”
Section: Resultsmentioning
confidence: 99%