The effects of supplementing a Fagus grandifolia diet with nitrogen and carbohydrates on the growth of Lymantria dispar.
Barnes, Chris; Fackler, James; Hong, Caroline; Tuzman, Elise
AbstractTo determine what nutrients limit the growth of Lymantria dispar feeding on American Beech (Fagus grandifolia) leaves, we fed gypsy moth caterpillars one of four diet types--either an unsupplemented diet of F. grandifolia, a carboyhydrate-enhanced diet, a nitrogen-enhanced diet, or a diet supplemented with both nitrogen and carboyhdrate. We found that casein, a nitrogen source, caused a significant increase in the caterpillar's growth rate while dextrose, a carbohydrate, did not. Based on these results, we concluded that nitrogen content is a limiting factor in the growth rate of L. dispar on F. grandifolia.
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