Effect of Natural and Artificial Diets on Protease Activity in the Midgut of Spodoptera cosmioides and Spodoptera eridania (Lepidoptera: Noctuidae) Larvae

Spodoptera cosmioides Walker and Spodoptera eridania Stoll (both Lepidoptera: Noctuidae) are herbivorous insects affecting crop yield. Understanding midgut digestive enzyme properties in these caterpillars when feeding on different resources is important for control strategies of these agricultural pests. This study evaluated the activity of midgut digestive enzyme total proteases, trypsin, cysteine proteases, and chymotrypsin in S. cosmioides...