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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Aggregations of juvenile whale sharks (Rhincodon typus) in the Gulf of Tadjoura, Djibouti
Environmental Biology of Fishes, Volume 80, No. 4, Year 2007
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Description
A total of 23 whale sharks were identified over a 5 d period in the Arta Bay region of the Gulf of Tadjora, Djibouti. Most of the sharks aggregating in this area were small (<4 m TL) males. Individuals were identified using photographs of distinctive scars and spot and stripe patterns on the sides of the animals. Of these, 65% had scarring that was attributable to boat or propeller strikes. Most of the whale sharks we encountered were feeding on dense accumulations of plankton in shallow water just off (10-200 m) the shoreline. This food source may account for the aggregation of sharks in this area. One 3 m male shark was tagged with an ARGOS (Splash) satellite tag for 9 d. During this time the shark traversed to the shoreline on the opposite side of the Gulf (a distance of 14 km) and then returned to the Arta Bay area before retracing his path to the other shore. The shark spent most of the daylight hours at the surface, while at night dives were more frequent, deeper and for longer durations. © 2006 Springer Science+Business Media, Inc.
Authors & Co-Authors
Rowat, David R.L.
Seychelles, Mahe
Marine Conservation Society Seychelles
Meekan, Mark Gregory
Australia, Townsville
Australian Institute of Marine Science
Engelhardt, Udo
Australia, Townsville
Reefcare International Pty. Ltd.
Pardigon, Bruno
Djibouti
Marine Conservation Society of Djibouti
Vély, Michel
France
Megaptera
Statistics
Citations: 102
Authors: 5
Affiliations: 5
Identifiers
Doi:
10.1007/s10641-006-9148-7
ISSN:
03781909
Research Areas
Environmental
Food Security
Study Locations
Djibouti
Participants Gender
Male