Trichilia havanensis, ON, ON

García-Gómez, A., Figueroa-Brito, R., García Serrano, L. A. & Jiménez-Pérez, A., 2018, Trichilia (Meliaceae) plants: an important source of biomolecules with insecticidal properties, Florida Entomologist 101 (3), pp. 470-470 : 470-

EFFECT OF THE EXTRACTS OF TRICHILIA HAVANENSIS ON COPITARSIA DECOLORA SURVIVAL

Mean survival times of larvae fed with 1,000 and 1,500 ppm hexane extracts were significantly shorter than on the control diet treatment (Log-Rank Test = 19.26; df = 4; P <0.001; Table 3 ; Fig. 4 ). Larval and cumulative mortality increased along with concentration.

None of the ethyl acetate, acetone, methanol, and aqueous extracts of T. havanensis affected the mean larval survival times of C. decolora (Log-Rank Test = 7.819; df = 4; P <0.098; Log-Rank Test = 4.917; df = 4; P <0.296; Log-Rank Test = 7.157; df = 4; P <0.128; and Log-Rank Test = 3.895; df = 4; P <0.42 for ethyl acetate, acetone, methanol, and aqueous extracts, respectively; Table 3 ). Mean larval survival time varied from 26.9 ± 2.4 to 34.4 ± 0.5 d. Larval mortality oscillated from 16 to 32% and cumulative mortality from 28 to 56%.

Figures

Fig. 4. Survival curve of Copitarsia decolora larvae fed on an artificial diet sup- plemented with hexane extract of Trichilia havanensis bark at 100, 500, 1,000, and 1,500 ppm.