2011
DOI: 10.1071/wr10108
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Niche differentiation of bottlenose dolphin species in South Australia revealed by stable isotopes and stomach contents

Abstract: Context Animal species with overlapping ranges are common worldwide, but how these species coexist is less obvious. Dolphins are protected in Australia and yet little information is available on their resource use which is essential for successful management and conservation. Aim The aim of this study was to determine the degree of overlap in diet and feeding ecology of the two Tursiops spp. that have overlapping ranges in South Australia. Methods Stomach content (91 Tursiops sp. and 14 T. truncatus) and stabl… Show more

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Cited by 38 publications
(29 citation statements)
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References 63 publications
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“…), garfish ( Hyporhamphus melanochir ), and yellow‐eyed mullet ( Aldrichetta forsteri ) (Gibbs et al . ). In the study area, the influx of dolphins over the summer period may be associated with the distribution of these species that move into Adelaide's coastal waters during this period (Triantafillos , Bryars , Rogers et al .…”
Section: Discussionmentioning
confidence: 97%
“…), garfish ( Hyporhamphus melanochir ), and yellow‐eyed mullet ( Aldrichetta forsteri ) (Gibbs et al . ). In the study area, the influx of dolphins over the summer period may be associated with the distribution of these species that move into Adelaide's coastal waters during this period (Triantafillos , Bryars , Rogers et al .…”
Section: Discussionmentioning
confidence: 97%
“…Captive Australian sea lions are fed fish with a limited range in terms of both species and size that have been processed through fish markets, while wild sea lions have a broad diet of primarily benthic prey, including octopus (Octopus spp. ), giant cuttlefish (Sepia apama), squid (Sepioteuthis australis), and southern rock lobster (Jasus edwardsii) from inshore to the shelf edge (McIntosh et al 2007;Gibbs et al 2011). The introduction of microbes from unnatural prey may be contributing to variations in microbial diversity in captivity.…”
Section: Discussionmentioning
confidence: 99%
“…These were processed using the methods described in Gibbs et al . [34]. Relative ages of the dolphins examined were neonate ( n  = 5), calf ( n  = 9), juvenile ( n  = 10), subadult ( n  = 1) and adult ( n  = 1).…”
Section: Methodsmentioning
confidence: 99%