COMPARATIVE BIOLOGICAL DATA OF Spodoptera frugiperda (J. E. SMITH, 1797) (LEPDOTERA: NOCTUIDAE) IN COTTON AND MAIZE
Abstract
This research deals with the compared biology of Spodoptera frugiperda (J.E. Smnith, 1797) on a natural diet consisting of leaves of the cotton plant (cultivar ";IAC-17"; and leaves of a hybrid corn plant (";HMD-7974";)). The experiment was carried out under the following conditions: temperature, 25 +/- 2°C, moisture, 60 +/- 10% R.H. light, a 14-hour photoperiod. The following biological parameters were observed: egg stage: incubation period and viability; larval stage duration, number of instars, weight and viability; pupal stage: duration, weight and viability; adult stage: preoviposition period, fecundity and longevity. Generally speaking within these parameters, the results differed statistically, showing that the insects prefer the leaves of the corn plant.
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