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Wild bottlenose dolphin (Tursiops truncatus) behavior is impacted by a number of factors including season, time of day, and age.  However, less is known about how these factors may influence animals under professional care in zoos, aquariums and marine parks. Management practices such as scheduled feeding times, human interactions, lack of predators and show performances may also impact the activity budgets of dolphins.  The current study examined the rest, swim and play behavior of seven dolphins (three adults, four calves) at one facility. Data were collected over the entire 24-hour day for a period of one year. Observed behaviors were recorded in mutually exclusive categories including rest, low intensity swim, high intensity swim, low intensity play, high intensity play and social play. Data were analyzed to determine how often dolphins engaged in particular behaviors and if activity budgets varied due to season, time of day and age.  These dolphins spent the majority of their time in low intensity swim and low intensity play.  The activity budget varied between observational periods.  First, seasonal differences were found in low intensity swim, low intensity play, social play and high intensity play behaviors.  In the comparison for time of day, differences were found in rest, low intensity swim, low intensity play and social play.  Finally, no significant differences were found in age comparisons. Information gained from this study can help to better understand how different factors influence the behavior of bottlenose dolphins under professional care within zoos, aquariums and marine parks.

Seasonal, Diel, and Age Differences in Activity Budgets of a Group of Bottlenose Dolphins (Tursiops truncatus) Under Professional Care