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Effects of maternal age and adult diet on egg weight in the butterfly Euphydryas editha

ABSTRACT. 1. Euphydryas editha (Boisduval) (Nymphalidae) butterflies exhibited no consistent pattern of change in egg weight over their lifetimes. This was the case for captive butterflies fed diets containing sugars and amino acids, for butterflies fed diets containing only sugar, and for those left completely at liberty in their natural habitats between ovipositions.