Authors' contributions
DC conceived the study and participated in its design, carried out
the molecular genetic studies and the statistical analysis, and drafted
the manuscript. BA coordinated the study, participated in the design
and in the statistical analysis, and helped to draft the manuscript. ML
and MRG contributed in data acquisition and interpretation, and helped
to draft the manuscript. All authors read and approved the final
manuscript.
Acknowledgements
Samples were generously provided by Susan Walker, Fernando Alfaro,
Giovanna Gallardo, Rocío Palacios, Claudia Manfredi, Pablo Perovic,
Lilian Villalba, Never Bonino, Victor Pacheco, Ursula Fajardo, Analí
Madrid and José Luis Condori. We also would like to thank Mathieu
Alday, Michelle Pelletier, Philippe Girard, Rachel Massicotte, Frederic
Cyr, Claude-Olivier Silva-Beaudry, Émilie Castonguay, Joelle Boizard,
Marie-Claire Binet and Juan Repucci, for their help during this project
and to the Peruvian National Institute of Natural Resources – INRENA
for research permits (N°13-2007) and institutional support. This work
was supported by grants from Wildlife Conservation Network and the
Panthera/Wildlife Conservation Society Kaplan Awards Program. Field
collection of Argentine samples was supported by BP Conservation
Programme, Whitley Fund for Nature, Wildlife Conservation Network and
Darwin Initiative.