Dear Colleagues, We are pleased to inform about the new publication on the echolocation behavior of franciscana dolphins (Pontoporia blainvillei): Melcón M. L., Failla M. Iniguez & M .A. (2012). Echolocation behavior of Franciscana dolphins (Pontoporia blainvillei) in the wild. Journal of the Acoustical Society of America. Volume 131, Issue 6, pp 448-453. Franciscana dolphins are small odontocetes hard to study in the field. In particular, little is known on their echolocation behavior in the wild. In this study we recorded 357min and analyzed 1019 echolocation signals in the Rio Negro Estuary, Argentina. The clicks had a peak frequency at 139 kHz, and a bandwidth of 19kHz, ranging from 130 to 149kHz. This is the first study describing echolocation signals of franciscana dolphins in the wild, showing the presence of narrow-band high frequency signals in these dolphins. Whether they use other vocalizations to communicate or not remains uncertain. The full publication can be downloaded from: http://asadl.org/jasa/resource/1/jasman/v131/i6/pEL448_s1?bypassSSO=1 Greetings to all, Fundación Cethus