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Type: Journal article
Title: The use of food resources by 0+ snapper, Chrysophrys auratus, from northern Spencer Gulf, South Australia
Author: Saunders, R.
Fowler, A.
Gillanders, B.
Citation: Marine and Freshwater Research, 2012; 63(8):680-686
Publisher: C S I R O Publishing
Issue Date: 2012
ISSN: 1323-1650
Statement of
Richard J. Saunders, Anthony J. Fowler and Bronwyn M. Gillanders
Abstract: Food availability is an important factor in survival and growth of juvenile fish and has been proposed as a major factor shaping the patterns of distribution and abundance of 0+ snapper, Chrysophrys auratus, in New Zealand and Japan. Thus, we tested the hypothesis that diet of 0+ snapper would exhibit spatial variation related to their abundance within a major nursery region. Therefore, we described the stomach contents of 0+ snapper collected from within a nursery region in areas of low and high abundance of 0+ snapper. The data also provided the opportunity to consider sized based differences in diet and temporal feeding patterns. 0+ snapper were generalist carnivores that preyed on a wide range of invertebrates and fish. No evidence of sized based dietary variation was identified but feeding either ceased or was much reduced during the hours of darkness. The major finding was that more polychaetes were present in the stomachs of 0+ snapper in the area of high 0+ snapper abundance than in the areas of low 0+ snapper abundance. The spatial differences in diet observed supports the hypothesis that prey availability is important as a driver of habitat selection by 0+ fish.
Keywords: Diet; nursery; Pagrus; recruitment
Rights: © CSIRO 2012
RMID: 0020121739
DOI: 10.1071/MF11266
Appears in Collections:Earth and Environmental Sciences publications
Environment Institute Leaders publications
Environment Institute publications

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