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organi- zation (e.g. CLUTTON-BROCK, 1988); to the optimality theories used by behavioural ecologists (e.g. KREBS & DAVIES, 1984), or to evolutionary theories on sexual selection, the process of which peacocks and birds of paradise are seen as the most outspoken products (e.g. CRONIN, 1991). At the same

In: Netherlands Journal of Zoology

develop- ment of wing muscles in many insects (oogenesis - flight syndrome). Optimality theories point in the same direction. HUIZEN (1977) de- scribed the degeneration of wing muscles before reproduction and the subsequent redevelopment thereafter for a Carabid, Amara plebeja, 449 which migrates

In: Netherlands Journal of Zoology