Role of White-handed Gibbon (Hylobates lar) Hoo Note Vocalizations In Response To Different Predator Types — Presentation Detail — Celebration of Scholars

Instructions

Student presentations must have a faculty sponsor.

Abstracts must include a title and a description of the research, scholarship, or creative work. The description should be 150-225 words in length and constructed in a format or style appropriate for the presenter’s discipline.

The following points should be addressed within the selected format or style for the abstract:

A clear statement of the problem or question you pursued, or the scholarly goal or creative theme achieved in your work.
A brief comment about the significance or uniqueness of the work.
A clear description of the methods used to achieve the purpose or goals for the work.
A statement of the conclusions, results, outcomes, or recommendations, or if the work is still in progress, the results you expect to report at the event.

Presenter photographs should be head and shoulder shots comparable to passport photos.

Additional Information

More information is available at carthage.edu/celebration-scholars/. The following are members of the Research, Scholarship, and Creativity Committee who are eager to listen to ideas and answer questions:

Jun Wang
Kim Instenes
John Kirk
Nora Nickels
Andrew Pustina
James Ripley

Role of White-handed Gibbon (Hylobates lar) Hoo Note Vocalizations In Response To Different Predator Types

Name: Jaime Utter
Major: Biology
Hometown: Lindenhurst, IL
Faculty Sponsor: Angela Dassow
Other Sponsors:
Type of research: Independent research
Funding: University of St Andrews, University of Wisconsin-Madison, and Carthage College

Abstract

White-handed gibbons (Hylobates lar), communicate through vocalizations. A specific vocalization in the gibbon repertoire, the “hoo” note, is present at the beginning of call bouts. Research into how different predator encounters affect hoo note vocalizations, in length and response times of another gibbon is being investigated. To analyze the hoo notes, duration, the length of time from onset to a change in vocalization, and onset times of a second gibbon response to the first gibbon were measured in minutes:seconds (MM:SS) using Adobe Audition.

A single factor ANOVA examining potential variation for predator type, group composition, and group territorial location were carried out for both hoo note duration and second gibbon onset time measurements. Results revealed that there was no significance in duration for predator type, group composition or group territorial location. There was also no significance in second gibbon onset for predator type or group composition. However, there was significance between group territorial locations for second gibbon onset (p-value= 0.011). These results indicate that the difference in response time for a second gibbon could be impacted by proximity to natural landmarks. Further analyses comparing other types of vocal bouts, such as duets, are necessary in order to accurately evaluate differences between groups.