DIET OF LONGFINNED EELS, ANGUILLA-DIEFFENBACHII, IN LAKE-ROTOITI, NELSON LAKES, NEW-ZEALAND

The diet of 72 longfinned eels, Anguilla dieffenbachii, from Lake Roto iti, Nelson Lakes National Park, New Zealand, was numerically dominate d by snails, especially Lymnaea. Larvae of the dragonfly, Procordulia grayi, were extensively eaten as they migrated towards the shore for e mergence. By weight, the most important food was fish, with upland bul lies, Gobiomorphus breviceps, most important for eels < 500 mm, and ye arling brown trout, Salmo trutta, for eels > 700 mm.