Spatial ecology and residency patterns of adult great barracuda (<Emphasis Type="Italic">Sphyraena barracuda</Emphasis>) in coastal waters of The Bahamas |
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| Authors: | Amanda C O’Toole Andy J Danylchuk Tony L Goldberg Cory D Suski David P Philipp Edd Brooks Steven J Cooke |
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| Institution: | (1) Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada;(2) Department of Environmental Conservation, University of Massachusetts Amherst, 160 Holdsworth Way, Amherst, MA 01003-9285, USA;(3) Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 1656 Linden Drive, Madison, WI 53706, USA;(4) Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 1102 South Goodwin Avenue, Urbana, IL 61801, USA;(5) Illinois Natural History Survey, Institute of Natural Resource Sustainability, University of Illinois, 1816 South Oak Street, Champaign, IL 61820, USA;(6) Cape Eleuthera Institute, PO Box 29, Rock Sound, Eleuthera, The Bahamas;(7) Institute of Environmental Science, Carleton University, 1125 Colonel By Drive, Ottawa, ON, K1S 5B6, Canada |
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| Abstract: | Great barracuda (Sphyraena barracuda) were implanted with acoustic telemetry transmitters (n = 42) and monitored within a stationary acoustic receiver array (n = 53 receivers) in The Bahamas to examine residency, seasonal movements, and habitat use. Barracuda were monitored for up
to 980 days and remained within the array area ~33% (median value) of the time. Most tagged barracuda were transient and would
often disappear from the array for months at a time, particularly in the summer where they were usually last detected on receivers
located in deeper shelf habitats, and then return at other times in the year. Habitat use across the footprint of the array
differed, with most detections occurring in coastal areas and comparatively fewer in deeper mosaic or shelf habitats. Linear
home range estimates revealed that some barracuda moved >12 km within a single day and are capable of migrating >100 km to
other islands in the Bahamian Archipelago. Our results provide some of the first telemetry data for this apex marine predatory
fish and the first reliable information on the residency and localized seasonal movements of adult great barracuda in the
coastal waters of the Western Atlantic. |
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