Residence and movement patterns of bull (Carcharhinus leucas) and lemon (Negaprion brevirostris) sharks within a coastal estuary
Yeiser, B.G., Heupel, M.R., and Simpfendorfer, C. A. (2008) Residence and movement patterns of bull (Carcharhinus leucas) and lemon (Negaprion brevirostris) sharks within a coastal estuary. Marine and Freshwater Research, 59 . pp. 489-501.
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View at Publisher Website: http://dx.doi.org/10.1071/MF07181
The movement patterns of large juveniles are poorly known for many shark species.With increasing pressure on shark populations these data are critical for the management of large coastal species. A series of acoustic receivers were positioned in Pine Island Sound, Florida, USA, to passively track the long-term movements of large juvenile bull (Carcharhinus leucas) and lemon (Negaprion brevirostris) sharks. Nineteen C. leucas and five N. brevirostris were monitored during 2003 and 2004. Individual C. leucas were present for 8 to 89 days, while N. brevirostris were present for 12 to 83 days.Weekly minimum convex polygons and kernel utilisation distributions were calculated to demonstrate the home range and core areas of use of both species. Spectral analysis demonstrated that several N. brevirostris showed repetitive diel north–south movement patterns over periods of up to 28 consecutive days. C. leucas demonstrated regular use of backwater habitats. Long-term use of estuarine areas by these large juvenile sharks suggests that estuarine coastal lagoons provide an important habitat for this portion of their life history and as such, protection of these habitats may assist in shark management and conservation.
|Item Type:||Article (Refereed Research - C1)|
|FoR Codes:||06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 80%|
07 AGRICULTURAL AND VETERINARY SCIENCES > 0704 Fisheries Sciences > 070402 Aquatic Ecosystem Studies and Stock Assessment @ 20%
|SEO Codes:||83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8302 Fisheries - Wild Caught > 830204 Wild Caught Fin Fish (excl. Tuna) @ 60%|
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960506 Ecosystem Assessment and Management of Fresh, Ground and Surface Water Environments @ 40%
|Deposited On:||02 Feb 2010 08:53|
|Last Modified:||13 Feb 2011 01:16|
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