Recognizing gibbons from their regional accents

Feb 07, 2011

Crested gibbons (genus Nomascus) live in dense Asian rainforest, specifically in China, Laos, Cambodia and Vietnam, and, because of their environment, they communicate with other gibbons by singing. Both males and females sing in order to define territory and find a mate, and couples also sing duets to strengthen their pair bonding. New research published in BioMed Central's open access journal BMC Evolutionary Biology describes how gibbon song can be used to identify not only which species of Gibbon is singing but the area it is from.

Researchers from the German Primate Center, Goettingen, compared the songs and the genetic diversity of 19 populations, covering 6 species of crested gibbons, to their location. Gibbon songs are adapted to transmission in a forest so the transmission energy is concentrated in a single frequency band, with slow modulations, on an optimised song syllable. Consequently, in order to identify species, over 400 song samples were analysed using 53 acoustic parameters. between the species was measured by looking at mutations in the for mitochondrial cytochrome b.

The four most related songs came from the gibbon species with the most closely related DNA and geographical location, from Cambodia, Laos and Vietnam with the gibbons from the southern most areas being more closely related to each other than to the more northerly Vietnamese gibbons and gibbons from China supporting the suggested migration direction from the North to the South.

Van Ngoc Thinh says that "Each gibbon has its own variable song but, much like people, there is a regional similarity between gibbons within the same location".

Explore further: Seeing the (UV) light: Previously undetected difference in human mutation rate unique to Europeans

More information: Concordance between vocal and genetic diversity in crested gibbons, Van Ngoc Thinh, Chris Hallam, Christian Roos, and Kurt Hammerschmidt, BMC Evolutionary Biology (in press)

add to favorites email to friend print save as pdf

Related Stories

When climate is iffy, birds sing a more elaborate tune

May 21, 2009

Why is it that some birds sing such elaborate songs and others not so much? A new study published online on May 21st in Current Biology, a Cell Press publication, says that climate patterns might be part of the answer.

Recommended for you

Dairy farms asked to consider breeding no-horn cows

Mar 28, 2015

Food manufacturers and restaurants are taking the dairy industry by the horns on an animal welfare issue that's long bothered activists but is little known to consumers: the painful removal of budding horn ...

Italian olive tree disease stumps EU

Mar 27, 2015

EU member states are divided on how to stop the spread of a disease affecting olive trees in Italy that could result in around a million being cut down, officials said Friday.

China starts relocating endangered porpoises: Xinhua

Mar 27, 2015

Chinese authorities on Friday began relocating the country's rare finless porpoise population in a bid to revive a species threatened by pollution, overfishing and heavy traffic in their Yangtze River habitat, ...

A long-standing mystery in membrane traffic solved

Mar 27, 2015

In 2013, James E. Rothman, Randy W. Schekman, and Thomas C. Südhof won the Nobel Prize in Physiology or Medicine for their discoveries of molecular machineries for vesicle trafficking, a major transport ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.