Residence and movement patterns of cownose rays Rhinoptera bonasus within a south-west Florida estuary

Collins, A.B., Heupel, M.R., and Motta, P.J. (2007) Residence and movement patterns of cownose rays Rhinoptera bonasus within a south-west Florida estuary. Journal of Fish Biology, 71 (4). pp. 1159-1178.

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Abstract

Between July 2003 and November 2004, 21 cownose rays Rhinoptera bonasus were tagged and tracked within Pine Island Sound estuary, Florida, using passive acoustic telemetry. Residence time of individuals ranged between 1 and 102 days. No relationship was detected between ray activity and tidal stage or time of day. Minimum convex polygons (MCP) and kernel utilization distributions (KUD) were calculated over several time frames to demonstrate the extent of an animal's home range and core areas of use. Total MCPs ranged between 0·81 and 71·78 km2 (mean = 22·01 km2), with daily MCPs as large as 25·8 km2. Total 95% KUDs ranged between 0·18 and 62·44 km2 (mean = 22·63 km2), while total 50% KUDs were smaller, ranging from 0·09 to 9·68 km2 (mean = 3·33 km2). Both MCP and KUD areas exhibited a positive relationship with residence time and R. bonasus size. As mobile, pelagic swimmers capable of traversing large distances, these data show that cownose rays travel extensively throughout this estuary, yet may remain within very small areas for extended periods.

Item ID: 2181
Item Type: Article (Refereed Research - C1)
Keywords: animal movement; cownose ray; Rhinoptera bonasus; telemetry
Additional Information:

ISSN: 1095-8649
Date Deposited: 18 May 2009 23:59
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 75%
06 BIOLOGICAL SCIENCES > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified @ 25%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8399 Other Animal Production and Animal Primary Products > 839999 Animal Production and Animal Primary Products not elsewhere classified @ 51%
83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8302 Fisheries - Wild Caught > 830299 Fisheries- Wild Caught not elsewhere classified @ 49%
Citation Count from Web of Science Web of Science 29
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