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Leatherback turtles satellite-tagged in European waters

TK Doyle, JD Houghton, PF O’Súilleabháin, VJ Hobson, F Marnell, J Davenport, GC Hays, Victoria Hobson

Endangered Species Research, Volume: 4, Pages: 23 - 31

Swansea University Author: Victoria Hobson

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DOI (Published version): 10.3354/esr00076

Abstract

The North Atlantic is considered a stronghold for the critically endangered leatherback sea turtle. However, limited information exists regarding the movements of individuals to and from the seas off Europe’s northwesterly fringe, an area where leatherbacks have been historically sighted f...

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Published in: Endangered Species Research
ISSN: 1863-5407 1613-4796
Published: 2007
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URI: https://cronfa.swan.ac.uk/Record/cronfa6131
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spelling 2011-10-01T00:00:00.0000000 v2 6131 2011-10-01 Leatherback turtles satellite-tagged in European waters 9024f9f0a80d2d248c7c6efb2e715c37 Victoria Hobson Victoria Hobson true false 2011-10-01 SBI The North Atlantic is considered a stronghold for the critically endangered leatherback sea turtle. However, limited information exists regarding the movements of individuals to and from the seas off Europe&rsquo;s northwesterly fringe, an area where leatherbacks have been historically sighted for the past 200 yr. Here, we used satellite telemetry to record the movements and behaviour of 2 individuals bycaught in fisheries off the southwest coast of Ireland. The turtle T1 (tagged 1 September 2005; female; tracked 375 d) immediately travelled south via Madeira and the Canaries, before residing in West African waters for 3 mo. In spring, T1 migrated north towards Newfoundland where transmissions ceased. T2 (29 June 2006; male; 233 d) travelled south for a short period before spending 66 d west of the Bay of Biscay, an area previously asserted as a high-use area for leatherbacks. This prolonged high latitude summer residence corresponded with a mesoscale feature evident from satellite imagery, with the implication that this turtle had found a rich feeding site. A marked change in dive behaviour was apparent as the turtle exited this feature and provided useful insights on leatherback diving behaviour. T2 headed south in October 2006, and performed the deepest-ever dive recorded by a reptile (1280 m) southwest of Cape Verde. Unlike T1, T2 swam southwest towards Brazil before approaching the major nesting beaches of French Guiana and Surinam. Importantly, these tracks document the movement of leatherbacks from one of the remotest foraging grounds in the North Atlantic. Journal Article Endangered Species Research 4 23 31 1863-5407 1613-4796 31 12 2007 2007-12-31 10.3354/esr00076 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2011-10-01T00:00:00.0000000 2011-10-01T00:00:00.0000000 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences TK Doyle 1 JD Houghton 2 PF O’Súilleabháin 3 VJ Hobson 4 F Marnell 5 J Davenport 6 GC Hays 7 Victoria Hobson 8
title Leatherback turtles satellite-tagged in European waters
spellingShingle Leatherback turtles satellite-tagged in European waters
Victoria Hobson
title_short Leatherback turtles satellite-tagged in European waters
title_full Leatherback turtles satellite-tagged in European waters
title_fullStr Leatherback turtles satellite-tagged in European waters
title_full_unstemmed Leatherback turtles satellite-tagged in European waters
title_sort Leatherback turtles satellite-tagged in European waters
author_id_str_mv 9024f9f0a80d2d248c7c6efb2e715c37
author_id_fullname_str_mv 9024f9f0a80d2d248c7c6efb2e715c37_***_Victoria Hobson
author Victoria Hobson
author2 TK Doyle
JD Houghton
PF O’Súilleabháin
VJ Hobson
F Marnell
J Davenport
GC Hays
Victoria Hobson
format Journal article
container_title Endangered Species Research
container_volume 4
container_start_page 23
publishDate 2007
institution Swansea University
issn 1863-5407
1613-4796
doi_str_mv 10.3354/esr00076
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
active_str 0
description The North Atlantic is considered a stronghold for the critically endangered leatherback sea turtle. However, limited information exists regarding the movements of individuals to and from the seas off Europe&rsquo;s northwesterly fringe, an area where leatherbacks have been historically sighted for the past 200 yr. Here, we used satellite telemetry to record the movements and behaviour of 2 individuals bycaught in fisheries off the southwest coast of Ireland. The turtle T1 (tagged 1 September 2005; female; tracked 375 d) immediately travelled south via Madeira and the Canaries, before residing in West African waters for 3 mo. In spring, T1 migrated north towards Newfoundland where transmissions ceased. T2 (29 June 2006; male; 233 d) travelled south for a short period before spending 66 d west of the Bay of Biscay, an area previously asserted as a high-use area for leatherbacks. This prolonged high latitude summer residence corresponded with a mesoscale feature evident from satellite imagery, with the implication that this turtle had found a rich feeding site. A marked change in dive behaviour was apparent as the turtle exited this feature and provided useful insights on leatherback diving behaviour. T2 headed south in October 2006, and performed the deepest-ever dive recorded by a reptile (1280 m) southwest of Cape Verde. Unlike T1, T2 swam southwest towards Brazil before approaching the major nesting beaches of French Guiana and Surinam. Importantly, these tracks document the movement of leatherbacks from one of the remotest foraging grounds in the North Atlantic.
published_date 2007-12-31T03:07:34Z
_version_ 1763749768208580608
score 11.016235

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