Reference : A photo-identification catalogue of bottlenose dolphins (Tursiops truncatus) in North...
Scientific journals : Article
Life sciences : Environmental sciences & ecology
Life sciences : Aquatic sciences & oceanology
A photo-identification catalogue of bottlenose dolphins (Tursiops truncatus) in Northeast Patagonia, Argentina: A tool for the conservation of the species
Vermeulen, Els [Université de Liège - ULg > > > Form.doct. sc. (océanographie - Bologne)]
Cammareri, Alejandro mailto [ > > ]
Failla, Mauricio mailto [ > > ]
Report to the International Whaling Commission
[en] Photo-identification ; Bottlenose dolphins ; Conservation
[en] A photo-identification study of bottlenose dolphins (Tursiops truncatus) was performed in the northern
Gulf of San Matías, Patagonia Argentina, during the period 2006-2008. In total, 199 surveys were
conducted with an average observation effort of 4.2h (SD=1.5) per survey. These surveys resulted in a
total observation effort of 824.7h of which 105.7h was spend with 158 dolphin groups. Over 12,500
pictures were analysed using the automatic identification systems FinEx and FinMatch (EuroPhlukes
Initiative, Leiden University, The Netherlands), resulting in the first identification catalogue of 47
dolphins for the North Patagonian region. The catalogued dolphins were re-identified up to 13 days with
57% (n=47) showing a degree of residency for the Natural Protected Area Bahía de San Antonio
(NPABSA; resighting frequency (RF)≥4). At least 6 dolphins, including one mother with her calf, were
additionally re-identified inside the estuary of the river ‘Rio Negro’, 250km east, indicating that their
home-range includes at least the whole northern region of the Gulf of San Matias. Data suggest that it
concerns a stable but yet unknown population of bottlenose dolphins with a high touristic potential and an
urgent need of conservation measurements. The obtained photo-identification catalogue is meant to serve
as a tool for the conservation of the species and the realization environmental education projects in the
Researchers ; Professionals

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