New Zealand Journal of Marine and Freshwater Research abstracts
Dietary analysis of Coryphaenoides serrulatus, C. subserrulatus and several other species of macrourid fish (Pisces: Macrouridae) from northeastern Chatham Rise, New Zealand
M. R. L. Jones
Earth and Oceanic Sciences Research Institute
Auckland University of Technology
Private Bag 92006
Auckland, New Zealand
email: majones@aut.ac.nz
Abstract The diets of Coryphaenoides serrulatus, C. subserrulatus and 11 other macrourid fish species sampled at depths of 901–1196 metres from the northeastern Chatham Rise are reported. Examination of stomach and intestinal contents of these fish permitted dietary reconstruction of species typically with high stomach-eversion rates, and description of novel dietary information; the diets of all these species were dominated by small invertebrates, particularly Crustacea and Mollusca. The diets of C. serrulatus and C. subserrulatus were subject to ontogenetic change, with larger food items increasing in importance in the diet of larger fish. Benthic food items are important for some species, whereas overall the diets probably reflect seasonal levels of prey or carrion abundance.
Keywords rattails; grenadiers; deep-sea; diet; ontogenetic change; benthic feeding
New Zealand Journal of Marine and Freshwater Research, 2008, Vol. 42: 73–84
0028–8330/08/4201–0073 © The Royal Society of New Zealand 2008
M07010; Online publication date 11 March 2008
Received 28 February 2007; accepted 19 October 2007
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