title: Underwater noise in an impacted environment can affect Guiana dolphin communication.
abstract: This study focused on whistles produced by Guiana dolphin under different noise conditions in Guanabara Bay, southeastern Brazil. Recording sessions were performed with a fully calibrated recording system. Whistles and underwater noise levels registered during two behavioral states were compared separately between two areas. Noise levels differed between the two areas across all frequencies. Whistle duration differed between areas and was negatively correlated with noise levels. Whistling rate was positively correlated with noise levels, showing that whistling rate was higher in noisier conditions. Results demonstrated that underwater noise influenced Guiana dolphin acoustic behavior.
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil; Programa de Pós-Graduação em Oceanografia, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil. Electronic address: lis.bitt@gmail.com.
authors.forename: Lis
authors.initials: L
authors.lastname: Bittencourt
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: Isabela M S
authors.initials: IM
authors.lastname: Lima
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: Luciana G
authors.initials: LG
authors.lastname: Andrade
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: Rafael R
authors.initials: RR
authors.lastname: Carvalho
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: Tatiana L
authors.initials: TL
authors.lastname: Bisi
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: José
authors.initials: J
authors.lastname: Lailson-Brito
authors.affiliation: Laboratório de Mamíferos Aquáticos e Bioindicadores Profª Izabel Gurgel (MAQUA) Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, Maracanã, Rio de Janeiro, Brazil.
authors.forename: Alexandre F
authors.initials: AF
authors.lastname: Azevedo
mesh_terms: D000819:Animal Communication; D000818:Animals; D001938:Brazil; D004289:Dolphins / Q000502:physiology*; D009622:Noise / Q000009:adverse effects*; D013018:Sound Spectrography; D014828:Vocalization, Animal
keywords: Acoustic behavior; Noise pollution; Whistles