Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt
Shawky, A., Alwany, M., Zakaria, S., El-Etreby, S. (2015). Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt. EKB Journal Management System, 10(1), 27-39. doi: 10.12816/0010696
Ahmed Shawky; Magdy Alwany; Saad Zakaria; Salah El-Etreby. "Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt". EKB Journal Management System, 10, 1, 2015, 27-39. doi: 10.12816/0010696
Shawky, A., Alwany, M., Zakaria, S., El-Etreby, S. (2015). 'Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt', EKB Journal Management System, 10(1), pp. 27-39. doi: 10.12816/0010696
Shawky, A., Alwany, M., Zakaria, S., El-Etreby, S. Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt. EKB Journal Management System, 2015; 10(1): 27-39. doi: 10.12816/0010696

Estimation of the abundance of the spinner dolphin Stenella longirostris using photo identification technique in Samadai Reef, Red Sea, Egypt

Catrina: The International Journal of Environmental Sciences
Article 7, Volume 10, Issue 1 - Serial Number 2, January 2015, Page 27-39  XML PDF (1012.43 K)
Document Type: Original Article
DOI: 10.12816/0010696
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Authors
Ahmed Shawky email ; Magdy Alwany; Saad Zakaria; Salah El-Etreby
Marine Department, Faculty of Sciences, Suez Canal University, Ismailia, Egypt
Abstract
Dolphins were photographed for individual identification purposes in Samadai reef, Marsa Alam, Red Sea between January 2012 and March 2013. In this study, 255 spinner dolphin Stenella longirostris were identified with a mean identification rate of 45%. Photo-identification analysis provided a population size range of 567 to 637 for spinner dolphins utilizing Samadai daytime for resting and socializing. From the 255 identified dolphins, 33 individuals (12.9%) were re-sighted for 4-8 times and 131 individuals (51.4%) were only observed once. The discovery curve indicated the continuous entrance of new animals to Samadai reef, which increased between May and December.
Keywords
spinner dolphins; Stenella longirostris; Samadai Reef; Red Sea; photo ID; population size
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