Abstract
From June 2004 to May 2005, the hyporheic habitat of Noce Bianco basin (Italian North East Alps) was sampled with three different methods; Bou-Rouch pump, bottle trap and artificial substrate. The aim of this work is to study the life cycle and feeding habits of the stonefly Chloroperla susemicheli (Zwick 1967). This species shows an annual life cycle with constant growth during ten months [slow seasonal growth], spring-summer emergence period and late summer hatching. All its life cycle occurs in the hyporheic zone. Gut contents were analysed by a clearing method. Nymphs can be catalogued as an engulfer-carnivorous species, feeding mainly on Chironomidae larvae, the most common preys in Alpine hyporheos. This study contributes to a better understanding of ecology of hyporheos macroinvertebrate assemblage.
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