Featured Research

from universities, journals, and other organizations

Honest Lovers? Fallow Buck Groans Reveal Their Status And Size During The Rut

Date:
September 6, 2008
Source:
Public Library of Science
Summary:
Researchers have show for the first time that sexually selected vocalizations can signal social dominance in mammals other than primates, and reveal that the independent acoustic components -- fundamental frequency (pitch) and formant frequencies -- encode information on dominance status and body size, respectively.

Fallow bucks groaning.
Credit: Trenton Garner

It is known that the phonic structure of calls produced by males during the breeding season may signal quality-related characteristics in many different types of animals. Previous research on mammals has mainly focused on the relationship between the acoustic components of vocalizations and one aspect of male quality: body size.

Related Articles


Researchers at the University of Zurich have shown for the first time that sexually selected vocalizations can signal social dominance in mammals other than primates, and reveal that the independent acoustic components – fundamental frequency (pitch) and formant frequencies – encode information on dominance status and body size, respectively. Fundamental frequency is a measure of the rate of vibration of the vocal folds. Formant frequencies result from filtering of vocalizations in the vocal tract.

In fallow deer, larger males have higher social status and are preferentially chosen by females for mating. Males vocalize only during the breeding season at potentially extremely high rates of up to 90 per minute, and the call they produce is known as a groan.

The current study found that higher-ranking males produced groans with lower minimum fundamental frequencies and to a lesser extent, with lower formant dispersion (an overall measure of formant frequencies). Larger males also produced groans with lower formant frequencies and lower formant dispersion. Dominance status was the factor most strongly related to mating success, with higher-ranking males having higher mating success. The acoustic parameters are probably indirectly related to male mating success through dominance status. Similarly in humans, men with lower fundamental frequency (pitch) voices are perceived as more dominant and have higher reproductive success due to greater access to mates.

The researchers said, "Fundamental frequency and formant frequencies may therefore represent acoustic cues to male quality that have mainly evolved in response to male-male competition. Other aspects of male vocal behaviour, such as the long-term investment in vocal display, are also likely to influence female mate choice in fallow deer."

This study advances our understanding of the possible evolutionary mechanisms underlying the extraordinary diversity of male deer vocalizations, and in general the structure and functioning of vocal communication in mammals.

Sound clip: http://www.plos.org/press/pone-03-09-vannoni.wav


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Vannoni et al. Low Frequency Groans Indicate Larger and More Dominant Fallow Deer (Dama dama) Males. PLoS ONE, 2008; 3 (9): e3113 DOI: 10.1371/journal.pone.0003113

Cite This Page:

Public Library of Science. "Honest Lovers? Fallow Buck Groans Reveal Their Status And Size During The Rut." ScienceDaily. ScienceDaily, 6 September 2008. <www.sciencedaily.com/releases/2008/09/080902221814.htm>.
Public Library of Science. (2008, September 6). Honest Lovers? Fallow Buck Groans Reveal Their Status And Size During The Rut. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2008/09/080902221814.htm
Public Library of Science. "Honest Lovers? Fallow Buck Groans Reveal Their Status And Size During The Rut." ScienceDaily. www.sciencedaily.com/releases/2008/09/080902221814.htm (accessed November 24, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Monday, November 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Deadly Japanese Pufferfish Discovered in Crimean Waters

Deadly Japanese Pufferfish Discovered in Crimean Waters

Reuters - Light News Video Online (Nov. 24, 2014) The capture of deadly Japanese pufferfish in the waters of Crimea is causing concern for fishermen and scientists alike. Sharon Reich reports. Video provided by Reuters
Powered by NewsLook.com
Terrifying Black Seadevil Fish Captured on First-of-Its Kind Video

Terrifying Black Seadevil Fish Captured on First-of-Its Kind Video

Buzz60 (Nov. 24, 2014) An aquarium captures a first-of-its kind video of a notoriously camera-shy fish that’s also not so camera-friendly. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Red Panda Cubs Explore the Bratislava Zoo

Red Panda Cubs Explore the Bratislava Zoo

AFP (Nov. 24, 2014) Four-month old Red Panda twins Pim and Pam still rely on their mother for breast milk at the Bratislava Zoo in Slovakia, but the precocious cubs have begun to branch out to solid foods, as well. Duration: 00:41 Video provided by AFP
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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