Jones - Diets of two fish species from the Puysegur region

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Home < Publications < Our Journals < New Zealand Journal of Marine and Freshwater Research < 2008

New Zealand Journal of Marine and Freshwater Research, 2008, Vol. 42: 333–337

0028–8330/08/4203–0333 © The Royal Society of New Zealand 2008

M07052; Online publication date 17 September 2008

Received 23 October 2007; accepted 19 May 2008

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New Zealand Journal of Marine and Freshwater Research abstracts

Short communication

Biology and diet of Coryphaenoides subserrulatus and Etmopterus baxteri from the Puysegur region, southern New Zealand

M. R. L. Jones

Earth and Oceanic Sciences Research Institute

Auckland University of Technology

Private Bag 92 006

Auckland, New Zealand

email: majones@aut.ac.nz

Abstract Aspects of the biology and diet of Coryphaenoides subserrulatus and Etmopterus baxteri from hill features in the Puysegur region, southern New Zealand are described. More female C. subserrulatus than males were retained, and females were significantly larger than males. Coryphaenoides subserrulatus fed primarily on Calanoida, the overall weight and number of which increased with fish size. Females consumed significantly heavier food items than males. For males, the number of food items consumed increased significantly with fish size, but not for females. There were more male E. baxteri than females, females were significantly larger, and both sexes fed on teleosts and Teuthoidea. No relationships between the numbers or weight of food items and increasing fish size or sex were apparent. Coryphaenoidessubserrulatus and E. baxteri fed on benthopelagic organisms, and the diet of C. subserrulatus may vary spatially in New Zealand waters.