Dear colleagues, On behalf of my co-authors, Iam pleased to announce our recent article on burst pulses of Guiana dolphin publishedin The Journal of the Acoustical Society of America: Andrade, L. G., Bisi, T. L., Lailson-Brito, J. andAzevedo, F. A. (2017). Burst pulses of Guiana dolphin (Sotalia guianensis) in southeastern Brazil. The Journal of theAcoustical Society of America, 141(4) 2947-2956. http://dx.doi.org/10.1121/1.4981768 ABSTRACTAcoustic studies of Guianadolphin have been focused on whistles, with little known about pulse signals in this species. This study characterized thetemporal and spectralproperties ofGuiana dolphin burst pulses. Groups of 2 to 23 Guiana dolphins were recordedwhile feeding and socializing in shallow waters in Guanabara Bay, southeasternBrazil, in 2013 and 2014. Burst pulse analysis involved two steps: signal detection and acoustic parameter analysis. Eight variables were analyzed for 197 total burst pulses: number of clicks,burst pulse duration, interclick interval, click duration, peak frequency,center frequency, −3 dB bandwidth, and −10 dB bandwidth. Mean burst pulseduration was 108.6 ms [standard deviation (SD) = 91.3] with a mean of 168clicks (SD = 137.3). Burst pulses had short interclick interval (0.7 ms,SD = 0.3) and mean click duration of 300 μs (SD = 100). Mean peak frequency and center frequencywere 28 kHz (SD = 11.6) and 29 kHz (SD = 11.0), respectively. Mean −3 dBbandwidth was 15 kHz (SD = 7.5) and mean −10 dB bandwidth was 40.5 kHz(SD = 14.3). The quantitative characterization of Guiana dolphin burst pulsesis an important step in describing the full acoustic repertoire of this species. Thepublication is available at: http://asa.scitation.org/doi/abs/10.1121/1.4981768?af=R For anyinformation please contact me at lucianaguimandrade@gmail.com Best wishes, Luciana G. Andrade -- Dra. Luciana Guimarães de Andrade Doutorado em Ecologia e Evolução - PPGEE/UERJ email: lucianaguimandrade@gmail.com