The influence of habitat degradation on the trophic interactions of marine predators remains poorly understood. We investigated the foraging ecology of resident common bottlenose dolphins ( Tursiops truncatus ) in Biscayne Bay, Florida, which has experienced extensive seagrass loss since 2010. Using stable isotope analysis ( δ 13 C and δ 15 N) of dolphin skin tissue and Bayesian mixing models (“SIBER” and “MixSIAR” packages in...

Investigating the foraging ecology and trophic interactions of threatened marine predators is critical to assess how community changes due to anthropogenic activities will affect predator–prey relationships. Two species of threatened coastal dolphins, the Indian Ocean humpback dolphin ( Sousa plumbea ) and the Indo‐Pacific bottlenose dolphin ( Tursiops aduncus ), occur off Nosy Be, north‐western Madagascar, in a region where a...

Investigating the feeding ecology of marine predators is critical for understanding their roles and functional importance in ecosystems. However, assessing the diet of large and wide-ranging predators can be challenging, particularly in the case of rare and elusive species. Killer whales ( Orcinus orca ) are large apex predators in global oceans, but very little is known about their feeding ecology in tropical ecosystems, part...

The present study represents the first reported boat‐based photographic identification study of Indo‐Pacific bottlenose dolphins ( Tursiops aduncus ) off the Wild Coast of southeast South Africa. This area is known for the annual sardine run, which attracts apex predators to the region during the austral winter. Dedicated photo‐identification surveys were conducted along this coast at three different study sites in February, J...

This study investigates how group size of Indo‐Pacific bottlenose dolphins ( Tursiops aduncus ) changes temporally, spatially, and/or with predominant behavior at two discreet sites along the Eastern Cape coastline of South Africa: Algoa Bay and the Wild Coast. The mean group size of bottlenose dolphins was large with an average of 52 animals. Significantly larger groups were observed in Algoa Bay ( = 60, range = 1–600) than o...