http://www.nature.com/nature/journal/v457/n7229/full/457515b.html
Nature 457, 515 (29 January 2009) | doi:10.1038/457515b
Research Highlights
Behaviour: Marmo-what?
Am. J. Primatol. doi:10.1002/ajp.20657 (2009)
http://dx.doi.org/10.1002/ajp.20657
The first evidence of within-species dialects among neotropical primates has
been revealed.
Stella de la Torre at the University of San Francisco Quito, Ecuador, and
Charles Snowdon at the University of Wisconsin, Madison, recorded the vocal
patterns of adult pygmy marmosets (Callithrix pygmaea; pictured) from 14 groups
found in five geographically distinct regions of northeastern Ecuador. Although
variation among the calls of adults from the same region was common, they
discovered consistent structural differences in calls between regions.
The authors suggest that social factors, genetic drift and habitat acoustics —
with different sounds being needed to best transmit information through
different forest habitats — could explain the differences.
Enjoy!
Xiao
XIAO, Jianqiang, Ph.D.
Research Associate
Psychology Department
Rutgers University
152 Frelinghuysen Road
Piscataway, NJ 08854
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