Bioactivity against Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) of Cymbopogon citratus and Eucalyptus citriodora essential oils grown in Colombia.
BACKGROUND
Essential oils isolated from Cymbopogon citratus (DC) Stapf. and Eucalyptus citriodora Hook grown in Colombia were analysed by gas chromatography-mass spectrometry (GC-MS) and tested for repellent activity and contact toxicity against Tribolium castaneum (Herbst.) (Coleoptera: Tenebrionidae).


RESULTS
The main components of C. citratus oil were geranial (34.4%), neral (28.4%) and geraniol (11.5%), whereas those of E. citriodora were citronellal (40%), isopulegol (14.6%) and citronellol (13%). The mean repellent doses after 4 h exposure were 0.021 and 0.084 mL L(-1) for C. citratus and E. citriodora oils respectively-values lower than that observed for the commercial product IR3535 (0.686 mL L(-1)).


CONCLUSIONS
These studies showed the composition and repellent activity of essential oils of C. citratus and E. citriodora, suggesting that these are potential candidates as insect repellents.
Olivero-Verbel
Jesús
J
Environmental and Computational Chemistry Group, Department of Chemistry, Campus of Zaragocilla, University of Cartagena, Cartagena, Colombia. joliverov@unicartagena.edu.co
Nerio
Luz S
LS
Stashenko
Elena E
EE
D000818:Animals; D001688:Biological Products / Q000737:chemistry; D003105:Colombia; D003247:Conservation of Natural Resources; D031743:Cymbopogon / Q000737:chemistry* / Q000254:growth & development*; D002523:Edible Grain; D005052:Eucalyptus / Q000737:chemistry* / Q000254:growth & development*; D005511:Food Handling; D007306:Insecticides / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry; D010572:Pest Control, Biological / Q000379:methods*; D014231:Tribolium; D014835:Volatilization
D001688:Biological Products; D007306:Insecticides; D009822:Oils, Volatile