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  • Title: Anticipatory behavior in captive bottlenose dolphins (Tursiops truncatus): a preliminary study.
    Author: Jensen AL, Delfour F, Carter T.
    Journal: Zoo Biol; 2013; 32(4):436-44. PubMed ID: 23633033.
    Abstract:
    This study examined whether a group of captive dolphins displayed anticipatory behaviors before shows. In general, anticipation occurs when an event is being predicted. Anticipatory behavior is defined by Spruijt et al. as "responses elicited by rewarding stimuli that lead to and facilitate consummatory behavior (Spruijt et al., 2001, Appl Anim Behav Sci 72: 145-171)." Using behavioral recording techniques, the behaviors, breathing rates, space use, and activity levels of all dolphins was recorded both before and after shows. Analysis compared pre- and post-show data in addition to looking at gradual changes in behavior prior to show sessions. Significant changes were found in the behavior and space use prior to sessions with the dolphins decreasing their activity levels, spending more time at the surface and moving towards the starting point of a session before it took place. There was a significant increase in the vigilant behavior before sessions, indicating that the dolphins were becoming more alert towards their trainers and other activities around the pool. This result mirrors previous research with other captive species; as feeding time was approaching, the animals seemed to "wait" and look for the handlers. Any behavioral change that may be regarded as anticipatory behavior was not evidently abnormal or stereotypic in nature, and breathing rates remained stable indicating that the animals do not perceive the shows as stressful or as an aversive experience. Additionally, behavior and level of activity remained stable following the sessions.
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