Current Search: Atlantic spotted dolphin--Behavior (x)
View All Items
(1 - 7 of 7)
- Title
- The social development of free-ranging Atlantic spotted dolphins (Stenella frontalis) in the Bahamas.
- Creator
- Moewe, Kelly Kathleen, Florida Atlantic University, Herzing, Denise L.
- Abstract/Description
-
This study documented the behavioral development of Atlantic spotted dolphins (Stenella frontalis) in the Bahamas. 45 three-minute video-taped sequences of underwater social behavior (aggression, courtship, play), spanning from 1992 to 1996, were selected for ethological analysis and were broken down into 15 adult, 15 juvenile and 15 mixed age class sequences. Continuous focal sub-group sampling was conducted, and one-tailed Kruskal-Wallis ANOVAs were used to test for differences between the...
Show moreThis study documented the behavioral development of Atlantic spotted dolphins (Stenella frontalis) in the Bahamas. 45 three-minute video-taped sequences of underwater social behavior (aggression, courtship, play), spanning from 1992 to 1996, were selected for ethological analysis and were broken down into 15 adult, 15 juvenile and 15 mixed age class sequences. Continuous focal sub-group sampling was conducted, and one-tailed Kruskal-Wallis ANOVAs were used to test for differences between the age groups in frequencies of occurrence of: (1) the 7 behavioral categories, and (2) the 8 most frequently performed behavioral events. Juveniles performed significantly more Other behaviors and Attention to Object events than adults, suggesting the importance of play within this social species. A Mann-Whitney U test revealed that within mixed age classes, behaviors were performed within combined-age-class groups more often than within single-age-class groups, suggesting a participatory mode of learning within juveniles.
Show less - Date Issued
- 2001
- PURL
- http://purl.flvc.org/fcla/dt/12832
- Subject Headings
- Atlantic spotted dolphin, Dolphins--Behavior, Social behavior in animals
- Format
- Document (PDF)
- Title
- An underwater analysis of the behavioral development of free-ranging Atlantic spotted dolphin calves (birth to 4 years of age).
- Creator
- Bayer, Jessica Ann., Florida Atlantic University, Herzing, Denise L.
- Abstract/Description
-
This investigation is the first to focus on the underwater behaviors and development of free-ranging Atlantic spotted dolphin (Stenella frontalis) mothers and calves. Underwater video recordings of 30 mother/calf pairs, during the calves' first three years of life, and 10 additional videos of four-year-old calves, were analyzed. Behavioral event frequencies were compared to the calf's age bracket (i.e. year-one, two, three and four). Results demonstrate an increase in calf independence in...
Show moreThis investigation is the first to focus on the underwater behaviors and development of free-ranging Atlantic spotted dolphin (Stenella frontalis) mothers and calves. Underwater video recordings of 30 mother/calf pairs, during the calves' first three years of life, and 10 additional videos of four-year-old calves, were analyzed. Behavioral event frequencies were compared to the calf's age bracket (i.e. year-one, two, three and four). Results demonstrate an increase in calf independence in year-four shown by a significant reduction in Nursing Act behaviors, significantly more Feeding/Foraging behaviors, and increased behaviors performed in the proximity of individuals other than the mother or alone. No strong evidence was found for increased maternal rejection behaviors near the end of the estimated weaning period. Additionally, results indicate that, for select behaviors, synchronicity may be increasingly expressed over time. Few differences in behavioral frequency and type were observed between calf genders and between mothers of each gender.
Show less - Date Issued
- 2001
- PURL
- http://purl.flvc.org/fcla/dt/12847
- Subject Headings
- Atlantic spotted dolphin, Dolphins--Behavior, Parental behavior in animals
- Format
- Document (PDF)
- Title
- The Development of Synchronous Vocalizations and Behaviors in Juvenile Male Wild Atlantic Spotted Dolphins.
- Creator
- Myers, Alyson J., Bjorklund, David F., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
The ability of adult wild Atlantic spotted dolphins (Stenella frontalis) to synchronize vocalizations and behaviors has been found to be a key factor in overcoming much larger bottlenose dolphins during interspecies aggression (Cusick & Herzing, 2014). Furthermore, an adult baseline of behaviors and vocalizations during aggressive events containing synchrony has been established (Myers, Herzing, & Bjorklund, 2017). The present study examines juvenile aggression that contains bouts of...
Show moreThe ability of adult wild Atlantic spotted dolphins (Stenella frontalis) to synchronize vocalizations and behaviors has been found to be a key factor in overcoming much larger bottlenose dolphins during interspecies aggression (Cusick & Herzing, 2014). Furthermore, an adult baseline of behaviors and vocalizations during aggressive events containing synchrony has been established (Myers, Herzing, & Bjorklund, 2017). The present study examines juvenile aggression that contains bouts of synchrony to look at the development of this valuable skill. Differences of duration between adult and juvenile synchronous bouts, lag sequential analyses, frequencies of behavioral classes depending on the age class of the aggressor-recipient dynamic, differences in the frequencies of behavioral classes depending on the synchronous state and aggressorrecipient dynamic, and differences in behavioral classes exhibited by adults and juveniles during different synchronous states were analyzed. Adults, across group size, were able to maintain physical synchrony for a longer duration. Juveniles were often in loose synchronous groups before forming into a tight synchronous group as seen in adult synchrony. Vocal synchrony during adult aggression in terms of synchronized squawks were longer in duration than vocal synchrony during juvenile aggression. Juveniles used more pursuit behaviors during aggression, which indicates practice of a behavior that was found to be the most frequently used in interspecies aggression (Volker, 2016). Additionally, when adults were present in juvenile aggression, they used fewer aggressive behavioral classes demonstrating self-handicapping based on their opponent. This illustrates that there is a learning period for both vocal and physical synchrony for juvenile dolphins and that juvenile aggression, or play-fighting, is an important aspect of the development of these skills. This study is the first to describe juvenile synchrony in a population of wild Atlantic spotted dolphins.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013088
- Subject Headings
- Atlantic spotted dolphin., Atlantic spotted dolphin--Behavior., Atlantic spotted dolphin--Vocalizaton., Stenella frontalis.
- Format
- Document (PDF)
- Title
- Synchrony in adult male Atlantic Spotted Dolphins (Stenella frontalis) during aggression.
- Creator
- Myers, Alyson J., Bjorklund, David F., Herzing, Denise L., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Psychology
- Abstract/Description
-
Synchrony between Atlantic spotted dolphins (Stenella frontalis) is crucial for successfully fending off bottlenose dolphins (Tursiops truncatus) during interspecies aggression. The present study examined synchrony in adult Atlantic spotted dolphins during aggressive encounters with bottlenose dolphins. Across group size, aggressive behavioral events increased preceding synchrony, peaked during synchrony, and decreased dramatically after synchrony. Although smaller groups ( 10 dolphins),...
Show moreSynchrony between Atlantic spotted dolphins (Stenella frontalis) is crucial for successfully fending off bottlenose dolphins (Tursiops truncatus) during interspecies aggression. The present study examined synchrony in adult Atlantic spotted dolphins during aggressive encounters with bottlenose dolphins. Across group size, aggressive behavioral events increased preceding synchrony, peaked during synchrony, and decreased dramatically after synchrony. Although smaller groups (< 10 dolphins) became synchronous more frequently than larger groups (> 10 dolphins), larger groups remained synchronous longer; however, smaller groups exhibited more frequent aggressive behavioral events during synchrony, suggesting that additional aggressive behaviors may be necessary to compensate for the small group size, whereas larger groups may be able to rely on synchrony alone. Disorganized squawk bouts synchronized as physical synchrony began, but only if coupled with escalating aggressive behaviors. The synchrony during aggressive episodes observed in adult Atlantic spotted dolphins can be used as a baseline to determine the process of the development of this critical skill in juveniles.
Show less - Date Issued
- 2015
- PURL
- http://purl.flvc.org/fau/fd/FA00004454
- Subject Headings
- Atlantic spotted dolphin, Atlantic spotted dolphin -- Behavior -- Research, Bottle nose dolphin, Bottle nose dolphin -- Behavior -- Research, Dolphins, Social behavior in animals
- Format
- Document (PDF)
- Title
- Personality Traits in Atlantic Spotted Dolphins (Stenella Frontalis): Syndromes and Predictors of Neophilia.
- Creator
- Skrzypczak, Nathan, Herzing, Denise L., Detwiler, Kate M., Florida Atlantic University, Charles E. Schmidt College of Science, Department of Biological Sciences
- Abstract/Description
-
Personality is defined as inter-individual variation of behavioral traits while maintaining intra-individual stability. The focus of this study was to observe distinct personality trait categories, establish baseline personality trait phenotypes for the juvenile population, and compare the personality phenotypes between different categories, such as sex or generation. Three personality traits were studied—sociability, curiousity, and boldness—based on the percentage of time individuals spent...
Show morePersonality is defined as inter-individual variation of behavioral traits while maintaining intra-individual stability. The focus of this study was to observe distinct personality trait categories, establish baseline personality trait phenotypes for the juvenile population, and compare the personality phenotypes between different categories, such as sex or generation. Three personality traits were studied—sociability, curiousity, and boldness—based on the percentage of time individuals spent with conspecifics, human researchers, and their mothers, respectively. The surveyed individuals significantly varied positively and negatively from the means of each trait, and no significant difference for any trait was found between males and females, or across time periods. A moderately strong correlation was discovered between two personality traits, boldness and curiousity, suggesting a personality syndrome. The second primary goal was to use the aforementioned baseline to determine if personality traits can be used to predict neophilic behavior specific to human-dolphin communication research. Six of the study subjects were more prone than their peers to engage with the two-way work, and these individuals were more bold—spent less time with their mothers—than the other subjects. This suggests that boldness has some predictive capabilities towards this type of neophilia.
Show less - Date Issued
- 2016
- PURL
- http://purl.flvc.org/fau/fd/FA00004680, http://purl.flvc.org/fau/fd/FA00004680
- Subject Headings
- Animal behavior, Animal societies, Atlantic spotted dolphin -- Behavior -- Research, Cognition in animals, Social behavior in animals
- Format
- Document (PDF)
- Title
- Signature whistles in Atlantic spotted dolphins (Stenella frontalis): Qualitative and quantitative analysis of mothers and offspring.
- Creator
- Bebus, Sara E., Florida Atlantic University, Herzing, Denise L.
- Abstract/Description
-
The signature whistles of related Atlantic spotted dolphins ( Stenella frontalis) in the Bahamas were evaluated for similarity. Judges compared the contour patterns of signature whistles pair-wise between 19 dolphins. Whistle parameters between the signature whistles of individuals were statistically compared. There were no significant differences between the signature whistles of male and female calves when the similarity of their whistles was compared to their mothers. However, there was a...
Show moreThe signature whistles of related Atlantic spotted dolphins ( Stenella frontalis) in the Bahamas were evaluated for similarity. Judges compared the contour patterns of signature whistles pair-wise between 19 dolphins. Whistle parameters between the signature whistles of individuals were statistically compared. There were no significant differences between the signature whistles of male and female calves when the similarity of their whistles was compared to their mothers. However, there was a tendency with female calves more likely to produce signature whistles similar to their mothers' whistles. Three out of five female calves produced signature whistles that were "very similar" or "similar" to the signature whistles of their mothers. Two out of four male calves produced signature whistles that were "similar" to the signature whistles of their mothers. The signature whistles of mother and calf pairs were more likely to be "similar" to each other than the signature whistles of sibling pairs.
Show less - Date Issued
- 2006
- PURL
- http://purl.flvc.org/fcla/dt/13408
- Subject Headings
- Dolphins--Physiology, Animal communication, Atlantic spotted dolphin--Behavior, Animal sounds
- Format
- Document (PDF)
- Title
- Signature whistle stability in wild female Atlantic spotted dolphins, Stenella frontalis.
- Creator
- Burris, Jennifer., Florida Atlantic University, Salmon, Michael
- Abstract/Description
-
Previous qualitative assessment indicated that signature whistles of temporarily captured, free-ranging dolphins remain stable over periods of 2--12 years. This study reports on the stability of signature whistle parameters in wild female Atlantic spotted dolphins in the Bahamas over five or more years and between changes in age class. Signature whistles from seven female dolphins were pooled into blocks of 'early' and 'late' years for the time assessment. Signature whistles from five females...
Show morePrevious qualitative assessment indicated that signature whistles of temporarily captured, free-ranging dolphins remain stable over periods of 2--12 years. This study reports on the stability of signature whistle parameters in wild female Atlantic spotted dolphins in the Bahamas over five or more years and between changes in age class. Signature whistles from seven female dolphins were pooled into blocks of 'early' and 'late' years for the time assessment. Signature whistles from five females were pooled by age class for the second analysis. Duration, minimum frequency, maximum frequency, and change in frequency were measured from spectrograms of whistles for statistical analysis. No significant changes were found in any of the signature whistle parameters either between early and late periods of time or with a change in age class.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fcla/dt/13155
- Subject Headings
- Dolphins--Physiology, Animal communication, Atlantic spotted dolphin--Behavior, Animal sounds
- Format
- Document (PDF)
