New Zealand Journal of Marine and Freshwater Research abstracts

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Diet of longfinned eels, Anguilla dieffenbachii, in Lake Rotoiti, Nelson Lakes, New Zealand

D. J. JELLYMAN

National Institute of Water & Atmospheric
Research Ltd
P. O. Box 8602
Christchurch, New Zealand

Abstract  The diet of 72 longfinned eels, Anguilla dieffenbachii, from Lake Rotoiti, Nelson Lakes National Park, New Zealand, was numerically dominated by snails, especially Lymnaea. Larvae of the dragonfly, Procordulia grayi, were extensively eaten as they migrated towards the shore for emergence. By weight, the most important food was fish, with upland bullies, Gobiomorphus breviceps, most important for eels < 500 mm, and yearling brown trout, Salmo trutta, for eels > 700 mm.

Keywords  diet; longfinned eels; Anguilla dieffenbachii; trout predation

New Zealand Journal of Marine and Freshwater Research, 1996, Vol 30: 365-369

0228-8330/96/3003-0365 $2.50/0 (c) The Royal Society of New Zealand 1996

PDF file of entire paper: medium quality (312K); (scanned from paper original: notes about this process)

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