Dietary Analysis of Vespula shidai in Reared and Wild Nests

Abstract

This study examines the dietary behaviors of both reared and wild nests of Vespula shidai in Central Japan, a region known for its rich biodiversity and unique entomophagy culture, particularly the consumption of wasp larvae and pupae, known locally as "hachinoko." This study reveal that these wasps exhibit remarkable dietary versatility, consuming a wide range of vertebrates--more varied than their counterparts in Hawaii and New Zealand. The study notes that wild nests, unlike their reared nests, consume a significantly greater variety of vertebrate species, even without supplementation. This suggests that vertebrate carcasses provide crucial nutrients that contribute substantially to wasp development. Additionally, this research highlights individual foraging preferences among nests, which are influenced by both the availability and nutritional value of prey, as well as human feeding practices. This variation in prey composition, particularly evident between reared and wild nests, underscores the complex interaction between wasps natural dietary habits and human intervention.