Celebration of Scholars
Activity budgets of lowland gorillas (Gorilla gorilla gorilla) at the Memphis Zoo
Name:
Katherine Van Dame
Major: Biology
Hometown: Palos Heights, IL
Faculty Sponsor:
Angela Dassow
Other Sponsors:
Type of research: Independent research
Funding: External funding through the University of Mississippi
Name:
Kathryn McKinnon
Major: Biology
Hometown: Kenosha, WI
Faculty Sponsor:
Angela Dassow
Other Sponsors:
Type of research: Independent research
Funding: External funding through the University of Mississippi
Abstract
The western lowland gorilla (Gorilla gorilla gorilla) is the largest and the most widespread gorilla subspecies. However, due to poaching, disease, and habitat loss their populations have been declining in recent years. Captive breeding programs are striving to preserve rare and important genes; however little is known about captive gorilla behavior. At the Memphis Zoo, there are four western lowland gorillas, but they have yet to successfully breed in captivity. Understanding captive gorilla behavior can help conservationists improve reproductive activity in captive populations. On September 30th, 2017, four gorillas were video recorded for approximately four hours. From those videos, thirty behavioral activities were observed and coded. A 1/0 ethogram was used to code for the presence/absence of each behavior at one minute increments. From this, time budgets were individually tallied and compared across all four gorillas. Sitting was the most common activity and ranged from 25.96-39.52% of the total time budgets. The second and third most common activities varied for each gorilla, but included visual side glancing, eating, lying, walking quadrupedally, and squatting. These activities represent 57.22-70.65% of the behaviors observed. Initial time budgets have been valuable in understanding the gorilla's general behavior. Additional observations will be necessary to fully understand the annual activity budgets of each gorilla before a captive breeding plan can be proposed to the zookeeper.