Comparison of several artificial diets with different protein sources for massal rearing of Ecdytolopha aurantiana (Lima) (Lepidoptera: Tortricidae)

The development of Ecdytolopha aurantiana (Lima) was compared among four artificial diets with different protein sources based on biological characteristics and fertility life table in order to have the insect available throughout the year for research in different areas. All diets with variable protein sources (D1= bean, yeast, wheat germ, soybean protein and casein; D2= corn flour, wheat germ, and yeast; D3= soybean protein, and wheat germ; D4= bean, yeast and wheat germ) allowed the insect to developed at 27 +- 2 deg C; RH 65 +- 10% and 14 h photophase. In all diets the insect presented four instars with several other similar biological characteristics. Since diet D2 (corn flour, wheat germ and yeast) provided the lowest development time, the highest viability, a high value of finite ratio of increase (ll), besides being of low cost and easy preparation, it can be considered as the most adequate for laboratory rearing of E. aurantiana. Balanced nutrients showed more important than the nutritional value of the components of the diet for this insect which is, for the first time, fed on artificial diet. (author)