Feeding ecology of the common bottlenose dolphin, Tursiops truncatus, in southern Brazil: analyzing its prey and the potential overlap with fisheries

Relationships between fish and otolith dimensions of Pomatomus saltatrix (Linnaeus, 1766) (Perciformes: Pomatomidae) in southeastern Brazil

“…Bluefish (Pomatomus saltatrix) is a marine pelagic migratory fish, found in continental shelf and estuarine waters of temperate and tropical regions (Juanes et al, 1996). The species is an active piscivorous fish (Haimovici, Krug, 1992), preyed by top predators such as sharks (Wood et al, 2009) and dolphins (Milmann et al, 2016). The bluefish is an important worldwide fishery resource captured by industrial, artisanal and recreational fisheries in the South Atlantic off the southeastern coast of Brazil (Haimovici, Krug, 1996;Lucena, O'Brien, 2005), in the North Atlantic along the coast of the United States (Buckel, Conover, 1997;Robillard et al, 2008), in eastern Australia (Zeller et al, 1996) and in the Mediterranean (Dhieb et al, 2005).…”

Niche overlap and diet composition of three sympatric coastal dolphin species in the southwest Atlantic Ocean

“…The diet of these three sympatric dolphin species was previously described via stomach content analysis (Bassoi, 2005; Daura‐Jorge, Wedekin, & Simões‐Lopes, 2011; Milmann, Danilewicz, Machado, Santos, & Ott, 2016), which revealed that the most important prey species for both Guiana and bottlenose dolphins is the pelagic Trichiurus lepturus , while the demersal Stellifer rastrifer is the preferred prey for the frasciscana dolphin. Studies suggest that the franciscana dolphin feeds mainly on small size prey (Bittar & di Beneditto, 2009; Cremer, Pinheiro, & Simões‐Lopes, 2012), which might be related to its rather unique skull morphology.…”

“…Studies suggest that the franciscana dolphin feeds mainly on small size prey (Bittar & di Beneditto, 2009; Cremer, Pinheiro, & Simões‐Lopes, 2012), which might be related to its rather unique skull morphology. In contrast, Guiana and bottlenose dolphins exhibit a high degree of dietary plasticity with respect to prey size (Daura‐Jorge et al , 2011; Milmann et al , 2016).…”

Foraging habits and levels of mercury in a resident population of bottlenose dolphins (Tursiops truncatus) in Bocas del Toro Archipelago, Caribbean Sea, Panama

“…The diet of dolphins has been studied primarily via stomach contents, fatty-acid and stable isotope analyses (e.g. Ford et al, 1998;Hooker et al, 2001;Das et al, 2003;Riccialdelli et al, 2010;Milmann et al, 2016). Dietary estimation indicates that coastal bottlenose dolphins prey on cephalopods and a variety of demersal and pelagic fish (Mead and Potter, 1990;Van Waerebeek et al, 1990;Blanco et al, 2001;Gannon and Waples, 2004;De Pierrepont et al, 2005;Spitz et al, 2006;Milmann et al, 2016;Moura et al, 2016).…”

“…However, bottlenose dolphin diet varied in relation to locations and habitats (coastaloceanic) (e.g. Mead and Potter, 1990;1995;Walker et al, 1999;Gannon and Waples, 2004;Santos et al, 2007;Hernandez-Milian et al, 2015;Milmann et al, 2016), seasons (Gannon and Waples, 2004), sex and reproductive status (e.g. lactating femalepregnant female), and age class (juvenilesadults) (e.g.…”