Details

Autor(en) / Beteiligte

• Siskos, E.P
• Konstantopoulou, M.A
• Mazomenos, B.E

Titel

Insecticidal activity of Citrus aurantium peel extract against Bactrocera oleae and Ceratitis capitata adults (Diptera: Tephritidae)

Ist Teil von

• Journal of applied entomology (1986), 2009-03, Vol.133 (2), p.108-116

Ort / Verlag

Oxford, UK: Oxford, UK : Blackwell Publishing Ltd

Erscheinungsjahr

2009

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• Citrus aurantium (L.) peel extracts in petroleum ether were evaluated for toxicity against olive fruit fly, Bactrocera oleae (Gmelin) and medfly, Ceratitis capitata (Wiedemann) adults. Bactrocera oleae flies were more susceptible to the extract than C. capitata in contact and residual bioassays. Fumigation bioassay had no effect. Both sexes of B. oleae were equally susceptible in both types of bioassays. However, males of C. capitata were more susceptible than the conspecific females. LD₅₀ values (concentration causing 50% mortality) after 96 h for the males and females of B. oleae were 44.8 and 40.1 μg/insect in contact bioassay through topical application. Whereas, LD₅₀ values for the males and females of C. capitata were 38.8 and 67.8 μg/insect respectively. LC₅₀ values after 96 h for the males and females of B. oleae were 18.8 and 17.8 μg/cm² in Petri dish residual bioassay. Whereas, LC₅₀ values for the males and females of C. capitata were 70.6 and 147.1 μg/cm² respectively. Fractionation of the extract on a silica gel column with three different polarity solvents resulted in three fractions with only the intermediate polarity solvent fraction having substantial insecticidal activity. Toxicity of the mixtures of active and inactive fractions was equal to the original extract. Our results indicate that C. aurantium has potential for controlling insect pests.