Digital Commons Network^™

Investigation Of Behavioral Responses Including Visual Side Biases To Social Stimuli In Bottlenose Dolphins (Tursiops Truncatus), Jennifer R. Savoie

Dissertations, Theses, and Capstone Projects

Cetacean field studies have reported consistent population-level side biases for foraging behaviors and this right side feeding bias is arguably the strongest in any species next to handedness in humans. Notably, experimental studies with cetaceans, particularly dolphins, have struggled to find laterality in other behaviors, and some have reported patterns that are inconsistent with those typically found in vertebrates. Side biases related to social processing have been reported in a few observational studies of wild delphinids but have not been successfully evaluated in a controlled experimental context. This dissertation investigated viewing side biases of bottlenose dolphins in two contexts: when …

Dolphins In Space: Quantifying The Relative Positions Of Bottlenose Dolphins (Tursiops Truncatus), Megan S. Mcgrath

Theses and Dissertations

Bottlenose dolphins (Tursiops truncatus) are socially sophisticated mammals with high fission-fusion dynamics and complex communication. The relative positioning of individual dolphins as they swim within their social group may aid in the expression of social roles. This study sought to quantify relative positioning in a small social group of female bottlenose dolphins at the National Aquarium in Baltimore that included two mother-daughter pairs, maternal and paternal half-sisters, a half-aunt and niece, and one unrelated female. We devised a method for scoring relative positioning in three dimensions. We found that the two mothers and their juvenile and adult daughters …

Using Personality Traits To Predict Pectoral Fin Contact Initiation Role In Bottlenose Dolphins (Tursiops Truncatus), Riley Paige Macgregor

Master's Theses

Contact with the pectoral fin facilitates formation and maintenance of social relationships between dolphins (Dudzinski & Ribic, 2017). Additionally, several studies have shown that bottlenose dolphins have distinct personalities that are consistent across time and situation (e.g., Highfill & Kuczaj, 2007; Kuczaj, Highfill, & Byerly, 2012), and it has been suggested that these individual differences (i.e., personality) may influence tactile behavior exchanges. The current study therefore aimed to determine if bottlenose dolphin personality traits predict whether and how dolphins initiate contact as a rubber or rubbee during pectoral fin contact exchanges, and to identify whether the effects of personality traits …

An Analysis Of Innovate Training With Bottlenose Dolphins (Tursiops Truncatus), Raymond John Van Steyn

Theses and Dissertations

The National Aquarium in Baltimore, Maryland conducted a training program in 2014 to develop a gestural command for their dolphins called “innovate”. This training paradigm was developed to resemble the seminal research by Pryor, Haag and O’Reilly (1969), as well as more recent efforts of Braslau-Schneck (1993) and Kuczaj and Eskelinen (2014) of training dolphins to offer “creative” behaviors not developed through conventional methods of behavioral modification, such as shaping. The goal of the present study was to observe records taken during the National Aquarium’s training procedure as well as data collected ~3 years after said training in order to …

The Effect Of Boat Type On Bottlenose Dolphin (Tursiops Trucatus) Behavior In The Mississippi Sound, Maria Zapetis

Master's Theses

Increases in oceanic shipping are a global phenomenon, and a leading cause of concern for marine animal welfare. While it may be difficult to assess the effect of boat traffic on all species in all contexts, it is vital to report anthropogenic impacts where longitudinal data is available, and doubly so where a dearth of information exists. The purpose of this study is to describe how dolphin behavior changed in the presence of boats in the Mississippi Sound between 2006 and 2012, and more specifically, to detail how different boat types impacted dolphins’ behavioral states. This study is unique in …

Does Personality Similarity In Bottlenose Dolphin Pairs Influence Dyadic Bond Characteristics?, Kelsey R. Moreno

Master's Theses

Social structures are critical to the success of many species and have repercussions on health, well-being, and adaptation, yet little is known about the factors which shape these structures aside from ecology and life history strategies. Dyadic bonds are the basis of all social structures; however, mechanisms for formations of specific bonds or patterns in which individuals form which types of bonds have yet to be demonstrated. There is a variety of evidence indicating personality may be a factor in shaping bonds, but this relationship has not been explored with respect to bond components and is yet to be demonstrated …

A Study Of Object Play In Captive Bottlenose Dolphins (Tursiops Truncatus), Victoria L. Johnson

Honors Theses

Behaviors related to play are positively reinforcing as they promote the continued exhibition of play behaviors in a variety of animal species. Play in animals is thought to contribute to the development and practice of skills animals require across their lifespan (i.e., foraging, mating, etc.). In bottlenose dolphins (Tursiops truncatus), several categories of play can be observed such as solitary play, social play, locomotor play, predatory play, and object play. The aim of the present study was to observe how variables of age-class, sex, object type, and play sociality influenced dolphin object play by utilizing video data from a …

Efficacy Of Cognitive Enrichment For Bottlenose Dolphins (Tursiops Truncatus): Evaluation Of Planning Abilities Through The Use Of A Novel Problem Solving Task, Lisa Kay Lauderdale

Dissertations

Environmental enrichment is a key component to improving the psychological and physiological well being of animals in human care. Enrichment can be achieved through a variety of modalities, including the addition of objects and scents, or by providing the animals with additional challenges. The effectiveness of specific enrichment should be evaluated on a case-by-case basis to determine if the desired result is achieved. Environmental enrichment devices (EED’s) can be utilized to present novel problems to animals in human care. When confronted with a novel problem, dolphins can plan their behavior to create a more efficient strategy then previously modeled.

The …

Effects Of Failure On Subsequent Performance In The Bottlenose Dolphin (Tursiops Truncatus), Lisa Kay Lauderdale

Master's Theses

The current study examined the immediate effects of two types of failure during operant-conditioning based training sessions in 11 bottlenose dolphins (Tursiops truncatus) at the U.S. Navy Marine Mammal Program in San Diego, CA. While learning a multi-faceted behavior not commonly found in nature, such as beaching, animals are likely to perform approximations of the behavior that are not successful and do not result in reinforcement. The effects of failure on beaching trials were systematically investigated over a three-month period by determining the mean failure rate and the probability of success after initial success, initial attempts, and initial …