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Stomach contents analysis of Tursiops aduncus and Sousa plumbea stranded along the United Arab Emirates coastline
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2023
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Source: Marine Mammal Science, 40(2)
[PDF-8.41 MB]
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Journal Title:Marine Mammal Science
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Description:The Indo-Pacific bottlenose dolphin (Tursiops aduncus) and the Indian Ocean humpback dolphin (Sousa plumbea), previously reported as Sousa chinensis (Mendez et al., 2013) are among the resident small cetacean species inhabiting the United Arab Emirates (UAE) and broadly the Arabian/Persian Gulf coastal waters (hereafter referred to as “the Gulf”) (Baldwin et al., 2004; Natoli et al., 2022; Preen, 2004). Although both species are listed as threatened in the IUCN Red List, knowledge of their population status, distribution and ecology is patchy in this region (Notarbartolo di Sciara et al., 2021). Aerial surveys performed in 1989, and repeated in 1999, in UAE waters (Abu Dhabi) estimated a marked difference in small cetacean occurrence, indicating a 71% decline in dolphin sightings across the 13-year period (Preen, 2004). Transect surveys conducted along the coast and offshore islands of Abu Dhabi over two consecutive years (2014–2015), estimated an Indian Ocean humpback dolphin population of 701 individuals, 95% CI [476, 845], (López et al., 2018) and an Indo-Pacific population of 782 individuals, 95% CI [496, 1,294] (Díaz López et al., 2021). However, the lack of comparable historical data prevents estimating population trends to accurately assess the status of the population in the area. Further to this, ecological niche modeling using UAE-based citizen science sightings data, gathered between 2012 and 2019, indicates the regular presence of the above-mentioned species in the Gulf waters, and a subtle niche partitioning among them, likely driven by different diets and energy requirements (Natoli et al., 2022).
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Source:Marine Mammal Science, 40(2)
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ISSN:0824-0469;1748-7692;
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Rights Information:Accepted Manuscript
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Compliance:Library
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