Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry
Prior to a recent harvest moratorium, sand tiger sharks (Carcharias taurus) were the focus of both directed and non-directed fisheries in the northwest Atlantic. Sand tigers occupy a high public profile due to their size and relative ease of public display. In contrast with many other large coastal...
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ftnsoutheastern:oai:nsuworks.nova.edu:occ_facpresentations-1123 2023-05-15T17:45:33+02:00 Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry Fox, Dewayne A. Wetherbee, Bradley M. Brown, Lori Shivji, Mahmood S. Sulak, Kenneth Moore, Johnny 2009-07-23T07:00:00Z https://nsuworks.nova.edu/occ_facpresentations/124 unknown NSUWorks https://nsuworks.nova.edu/occ_facpresentations/124 Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures Marine Biology Oceanography and Atmospheric Sciences and Meteorology conference 2009 ftnsoutheastern 2022-04-10T21:28:23Z Prior to a recent harvest moratorium, sand tiger sharks (Carcharias taurus) were the focus of both directed and non-directed fisheries in the northwest Atlantic. Sand tigers occupy a high public profile due to their size and relative ease of public display. In contrast with many other large coastal sharks, limited information is available on the coastal movements of sand tigers including locations of overwintering areas. In 2008 we outfitted 13 sand tigers (1.4-3.3m FL) with acoustic (VEMCO Ltd. V-16-6H) and satellite (Microwave Telemetry Inc.) transmitters in Delaware Bay. Twelve of the thirteen acoustic transmitters were detected a total of 8,030 times prior to departing Delaware waters in September and October. Similarly, twelve of the satellite transmitters were detected within scheduled pop-off times (4-6 months post-deployment). Most sand tigers made relatively direct movements to overwintering areas in the Hatteras Bight Region, arriving within weeks of departing Delaware waters. An additional male sand tiger (1.09m FL) outfitted with an acoustic transmitter was detected off Cape Canaveral, FL in January-February, 2009 after departing Delaware Bay in September. Female sand tigers occupied significantly (p <.0001) warmer waters compared to males although occupied depths did not vary significantly (p=.1054). Although perceived as a relatively sluggish species, telemetered sand tigers were documented making rapid movements in the water column from surface waters to depths of 188m. Our results underscore the need for coast-wide approaches to recover sand tigers as this charismatic shark is particularly vulnerable to anthropogenic impacts. Conference Object Northwest Atlantic Nova Southeastern University: NSU Works |
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Open Polar |
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Nova Southeastern University: NSU Works |
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ftnsoutheastern |
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Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
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Marine Biology Oceanography and Atmospheric Sciences and Meteorology Fox, Dewayne A. Wetherbee, Bradley M. Brown, Lori Shivji, Mahmood S. Sulak, Kenneth Moore, Johnny Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
topic_facet |
Marine Biology Oceanography and Atmospheric Sciences and Meteorology |
description |
Prior to a recent harvest moratorium, sand tiger sharks (Carcharias taurus) were the focus of both directed and non-directed fisheries in the northwest Atlantic. Sand tigers occupy a high public profile due to their size and relative ease of public display. In contrast with many other large coastal sharks, limited information is available on the coastal movements of sand tigers including locations of overwintering areas. In 2008 we outfitted 13 sand tigers (1.4-3.3m FL) with acoustic (VEMCO Ltd. V-16-6H) and satellite (Microwave Telemetry Inc.) transmitters in Delaware Bay. Twelve of the thirteen acoustic transmitters were detected a total of 8,030 times prior to departing Delaware waters in September and October. Similarly, twelve of the satellite transmitters were detected within scheduled pop-off times (4-6 months post-deployment). Most sand tigers made relatively direct movements to overwintering areas in the Hatteras Bight Region, arriving within weeks of departing Delaware waters. An additional male sand tiger (1.09m FL) outfitted with an acoustic transmitter was detected off Cape Canaveral, FL in January-February, 2009 after departing Delaware Bay in September. Female sand tigers occupied significantly (p <.0001) warmer waters compared to males although occupied depths did not vary significantly (p=.1054). Although perceived as a relatively sluggish species, telemetered sand tigers were documented making rapid movements in the water column from surface waters to depths of 188m. Our results underscore the need for coast-wide approaches to recover sand tigers as this charismatic shark is particularly vulnerable to anthropogenic impacts. |
format |
Conference Object |
author |
Fox, Dewayne A. Wetherbee, Bradley M. Brown, Lori Shivji, Mahmood S. Sulak, Kenneth Moore, Johnny |
author_facet |
Fox, Dewayne A. Wetherbee, Bradley M. Brown, Lori Shivji, Mahmood S. Sulak, Kenneth Moore, Johnny |
author_sort |
Fox, Dewayne A. |
title |
Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
title_short |
Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
title_full |
Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
title_fullStr |
Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
title_full_unstemmed |
Coastal Movements of Sand Tiger Sharks (Carcharias taurus) in the Northwest Atlantic as Determined by Acoustic and Satellite Telemetry |
title_sort |
coastal movements of sand tiger sharks (carcharias taurus) in the northwest atlantic as determined by acoustic and satellite telemetry |
publisher |
NSUWorks |
publishDate |
2009 |
url |
https://nsuworks.nova.edu/occ_facpresentations/124 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Marine & Environmental Sciences Faculty Proceedings, Presentations, Speeches, Lectures |
op_relation |
https://nsuworks.nova.edu/occ_facpresentations/124 |
_version_ |
1766148658553683968 |