Personality and Affiliation in a Cooperative Task for Bottlenose Dolphin (Tursiops truncatus) Dyads

Social species can depend on each other for survival, helping in rearing of young, predator defense, and foraging. Personality dynamics between individuals may influence cooperative behaviors. Bottlenose dolphins (Tursiops truncatus) live in social communities and cooperate with other conspecifics to achieve goals both in the wild and in human care. We investigated the role that personality plays in the willingness of dolphins to work together. We tested five bottlenose dolphin pairs at the Roatan Institute for Marine Sciences, Honduras, with an apparatus previously used to experimentally test dolphin cooperation. Personality profiles of each dolphin were created using surveys completed by the caretakers, in particular noting two different categories of interactions: dolphin to dolphin and dolphin to world. We hypothesized that dyadic success in the cooperative task would differ based on specific personality traits of individuals. We also hypothesized that the most successful dyads would show similar types of conspecific sociality and different means of interacting with objects. Although none of the dolphin pairs cooperated to open the apparatus, individual personalities were analyzed in relation to the dolphins’ individual and mutual interactions with the apparatus as well as the pairs’ social behaviors. Playfulness, curiosity, and affiliation as well as agreeableness, and extraversion were positively related to affiliation with the apparatus and each other. These findings suggest that certain aspects of personality are indicative of affiliation or interaction by an individual dolphin. These results could guide future animal research on the relationship between personality, social interactions, and problem-solving

Insightful Problem Solving in an Asian Elephant

The “aha” moment or the sudden arrival of the solution to a problem is a common human experience. Spontaneous problem solving without evident trial and error behavior in humans and other animals has been referred to as insight. Surprisingly, elephants, thought to be highly intelligent, have failed to exhibit insightful problem solving in previous cognitive studies. We tested whether three Asian elephants (Elephas maximus) would use sticks or other objects to obtain food items placed out-of-reach and overhead. Without prior trial and error behavior, a 7-year-old male Asian elephant showed spontaneous problem solving by moving a large plastic cube, on which he then stood, to acquire the food. In further testing he showed behavioral flexibility, using this technique to reach other items and retrieving the cube from various locations to use as a tool to acquire food. In the cube's absence, he generalized this tool utilization technique to other objects and, when given smaller objects, stacked them in an attempt to reach the food. The elephant's overall behavior was consistent with the definition of insightful problem solving. Previous failures to demonstrate this ability in elephants may have resulted not from a lack of cognitive ability but from the presentation of tasks requiring trunk-held sticks as potential tools, thereby interfering with the trunk's use as a sensory organ to locate the targeted food

Preston Foerder's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity