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MOCNESS estimates of the size and abundance of a pelagic gonostomatid fish Cyclothone pallida off the Bahamas

Published online by Cambridge University Press:  26 November 2001

Craig R. McClain
Affiliation:
Department of Biology, University of Massachusetts, Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, USA Present address: Department of Biology, Wittenberg University, PO Box 720, Springfield, Ohio 45501, USA
Martin F. Fougerolle
Affiliation:
Biological Sciences Department, Florida Tech., 50 W. University Boulevard, Melbourne, FL 32901, USA
Michael A. Rex
Affiliation:
Department of Biology, University of Massachusetts, Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, USA Present address: Department of Biology, Wittenberg University, PO Box 720, Springfield, Ohio 45501, USA
Jim Welch
Affiliation:
Division of Marine Science, Harbor Branch Oceanographic Institute, 5600 US 1 North, Ft. Pierce, FL 34946, USA
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Abstract

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Depth patterns of size and abundance in a pelagic bristlemouth fish Cyclothone pallida (Stomiformes: Gonostomatidae) are reported. Sampling was conducted during the day and night at two sites in the Bahamas using a Multiple Opening and Closing Net and Electronic Sensing System (MOCNESS). All samples show peak abundance in the 500–700 m depth range irrespective of time or sampling location. The mean and variance of body length increased with depth, and size–depth patterns do not significantly differ among samples. Results suggest that these populations of C. pallida do not exhibit diel vertical migration.

Type
Research Article
Copyright
2001 Marine Biological Association of the United Kingdom