Appearance before performance? Nutritional constraints on life‐history traits, but not warning signal expression in aposematic moths

Carita Lindstedt, Kaisa Suisto & Johanna Mappes
1. Trade-offs have been shown to play an important role in the divergence of mating strategies and sexual ornamentation, but their importance in explaining warning signal diversity has received less attention. In aposematic organisms, allocation costs of producing the conspicuous warning signal pigmentation under nutritional stress could potentially trade-off with life-history traits and maintain variation in warning colouration. 2. We studied this with an aposematic herbivore Arctia plantaginis (Arctiidae), whose larvae and adults show extensive...
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