European Ocean Biodiversity Information System

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IFREMER/Kélonia satellite tracked late juvenile loggerhead sea turtles from Réunion Island 2008-2012
Contact: Bourjea, Jérôme ; Dalleau, Mayeul

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Notes: Only data aggregated per 1-degree cell are available through OBIS. The non-aggregated data are available through the OBIS-SEAMAP Portal

Satellite data from tracking study conducted on juvenile loggerhead sea turtles in the Indian Ocean. more

Eighteen individuals were fitted with transponders and tracked from Réunion Island (21.2°S, 55.3°E) in order to investigate movements and diving patterns. Nine turtles swam north towards Oman (20.5°N, 58.8°E), where one of the world’s largest rookeries of loggerheads is located. Three individuals travelled south towards South-Africa and Madagascar, countries that also host loggerhead nesting grounds. Fourteen of the transmitters relayed diving profiles. A dichotomy between diurnal and nocturnal diving behavior was observed. A greater number of shorter dives occurred during the day. Diving behavior also differed according to movement behavior as individuals spent more time in subsurface waters (<10 m) during transit phases. The study provides an improved understanding of the oceanic movements and diving behavior of juvenile loggerheads. The results address a significant gap in the understanding of loggerhead oceanic movements and may help with the conservation of the species.

Biology > Reptiles
Marine/Coastal, organism, Satellite tracking, Telemetry, ISW, Indian Ocean, Caretta caretta (Linnaeus, 1758), Testudines

Geographical coverage
ISW, Indian Ocean [Marine Regions]

Temporal coverage
6 October 2008 - 14 December 2014

Taxonomic coverage
Caretta caretta (Linnaeus, 1758) [WoRMS]
Testudines [WoRMS]

Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), moredata provider
Bourjea, Jérôme
Duke University
Kot, Connie
Kéloniadata provider
Dalleau, Mayeul

Related datasets
Published in:
EurOBIS: European Ocean Biodiversity Information System, more
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2014-01-15
Information last updated: 2022-08-03
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