Featured Research

from universities, journals, and other organizations

Island Monkeys Do Not Recognize Big Cat Calls

Date:
January 21, 2008
Source:
University of California - Davis
Summary:
Monkeys living on an island without big cat predators do not show any particular alarm when recorded tiger growls are played to them, according to new research. The pig-tailed langurs do, however, flee in a hurry from the sound of human voices.

Monkeys living on an island without big cat predators do not show any particular alarm when recorded tiger growls are played to them, according to research by a UC Davis graduate student. The pig-tailed langurs do, however, flee in a hurry from the sound of human voices.

"This contributes to a growing literature on how animal behavior changes under relaxed selection pressures," said Jessica Yorzinski, a graduate student in animal behavior at UC Davis, who authored the study with Thomas Ziegler of the German Primate Center in Gφttingen, Germany.

Pig-tailed langurs are medium-sized monkeys that spend most of their day sitting in trees in small groups eating leaves. Their close relatives on the mainland of Indonesia are prey for tigers and leopards, but on the Mentawai islands, the monkeys have been isolated from big cats for about half a million years.

Yorzinski played recordings of tiger and leopard calls and growls, as well as the sounds of elephants (another animal unknown to the monkeys), pigs and birds (animals they know, but which do not eat monkeys) and people talking in the local language. People do hunt the monkeys for food.

On hearing the noises, the monkeys would look around and at each other and might leave the area. They did not show any greater alarm at hearing big cat noises than at hearing an elephant, and would flee in about four to five seconds. But on hearing recorded human voices, the monkeys would flee within a second. They did not flee from bird or pig noises.

Yorzinski, of course, had to take care to stay out of sight when locating monkeys and setting up speakers. "We couldn't do the experiment if the monkeys saw us first," she said.

The study is published in the December 2007 issue of the journal Ethology.


Story Source:

The above story is based on materials provided by University of California - Davis. Note: Materials may be edited for content and length.


Cite This Page:

University of California - Davis. "Island Monkeys Do Not Recognize Big Cat Calls." ScienceDaily. ScienceDaily, 21 January 2008. <www.sciencedaily.com/releases/2008/01/080117093444.htm>.
University of California - Davis. (2008, January 21). Island Monkeys Do Not Recognize Big Cat Calls. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2008/01/080117093444.htm
University of California - Davis. "Island Monkeys Do Not Recognize Big Cat Calls." ScienceDaily. www.sciencedaily.com/releases/2008/01/080117093444.htm (accessed July 28, 2014).

Share This




More Plants & Animals News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) — Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) — The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com
Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) — A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Russia Saves Gecko Sex Satellite, Media Has Some Fun With It

Newsy (July 27, 2014) — The satellite is back under ground control after a tense few days, but with a gecko sex experiment on board, the media just couldn't help themselves. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins