New Zealand Journal of Marine and Freshwater Research abstracts
Iso-electric focusing and the identification of fisheries' waste in the diet
of Westland petrels (Procellaria westlandica)
AMANDA N. D. FREEMAN
Department of Entomology & Animal Ecology
P. O. Box 84
Lincoln University
Canterbury, New Zealand
PETER J. SMITH
National Institute of Water & Atmospheric
Research Ltd
P. O. Box 14 901
Wellington, New Zealand
Abstract Iso-electric focusing was used to identify fish
tissue in Westland petrel (
Procellaria westlandica) diet samples.
Forty-five percent of the samples from Westland petrel stomachs produced clear
protein banding patterns and more than half of these were identified as species
common in fisheries' waste. Proteins in the other samples were presumably too
digested for this technique. Iso-electric focusing is a comparatively quick and
inexpensive technique and is particularly useful for diet studies where flesh
eaten is likely to be relatively undigested at the time of sampling.
Keywords iso-electric focusing; diet studies; petrel;
fisheries discards and waste
M97062
Received 9 October 1997; accepted 19 December 1997
PDF file of entire paper: medium quality (743K); (scanned from paper original: notes about this process)
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