IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
FIRST ACOUSTIC RECORD OF A SPECTACLED PORPOISE (PHOCOENA DIOPTRICA)
Autor/es:
GISELA V GIARDINO; JUAN PABLO LOUREIRO; SALVATORE MAZZOLA; ELENA PAPALE; KARINA ALVAREZ; GIUSEPPA BUSCAINO; MARIA CERAULO; DIEGO H. RODRIGUEZ
Lugar:
Mar del Plata
Reunión:
Congreso; XVIII CONGRESO LATINOAMERICANO DE CIENCIAS DEL MAR; 2019
Institución organizadora:
Asociación Latinoamericana de Investigadores de Ciencias del Mar (Alicmar)
Resumen:
Communication in Porpoises (Cetacea: Phocoenidae) has been little studied. They usually produce narrow band high frequency clicks for echolocation, which have likely evolved to take advantage of a window of low ambient noise, and/or of the reduced hearing sensitivity of killer whales at these high frequencies (100+ kHz). Evidences for clicks emitted in different contexts suggested also a communicative function as distress or pain call.The Spectacled porpoise (Phocoena dioptrica) is restricted to neritic and oceanic habitats of the Southern Hemisphere and little is known about its biology, ecology and population. Here, we describe for the first time the acoustic signals of a diseased Spectacled porpoise in rehabilitation.The porpoise (male, 1.8 m Standard Length) was held in a circular tank (13 m diameter, 1.35 m deep) at Fundación Mundo Marino (San Clemente del Tuyú, Argentina), and diagnosed as underweight and dehydrated. Twelve hours after the beginning of the rehabilitation procedure, an autonomous acoustic recorder, was deployed in the tank. Twenty-two hours of continuous recordings were collected at sampling rate of 192 kHz until porpoise?s death. Data were visually screened and analyzed by Avisoft Pro. A total of 3185 broadband frequency clicks were collected. Analysis resulted in a mean duration of 0.0054± 0.0076 µs without a clear repetition pattern.This preliminary study provides the first vocal behavior record of P. dioptrica, though under disease condition, veterinary treatment and manipulation. Future studies are needed to stablish the parameters used by the species at representative scale and conditions.