Thermoperiodic effects on larval growth parameters of the Sesamia nonagrioides (Lepidoptera: Noctuidae) |
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Authors: | Argyro A Fantinou Manolis Th Chourdas |
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Institution: | (1) Laboratory of Ecology and Environmental Sciences, Agricultural University of Athens, Iera Odos 75, 18855 Athens, Greece |
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Abstract: | The effect of five constant (10, 15, 20, 25 and 30°C) and the corresponding cycling (25:10, 27.5:12.5, 30:15, 32.5:17.5 and
35:20°C) temperatures at a photoperiod of 16:8 (L:D) h on the development and biometry (HCW, weight) of larva of Sesamia nonagrioides (Lef) Lepidoptera–Noctuidae were investigated. Larvae under both temperature treatments seemed to complete six instars. Final
mean head capsule widths did not differ significantly between constant and cycling temperatures. Larval weights increased
considerably through larval period under all temperature regimes. However, alternating temperatures were not shown to stimulate
larval weight or head capsule widths compared with those of constant temperatures, although tended to result in shorter larval
developmental periods. Results are discussed regarding development and seasonal biology of the species. |
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Keywords: | Temperature Cycling temperature Biometry HCW Weight |
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