INIDEP Inf. Téc. 21: 133-141, 1998

INIDEP Inf. Téc. 21: 133-141, 1998

Observaciones sobre la distribución vertical t caracterización de los registros ecoicos de algunas especies de peces costeros en la plataforma bonaerense. November 1994.

Autores: Adrián O. Madirolas y Federico J. Castro Machado.
Contribución INIDEP 1067


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Citar como:
Madirolas, A.O.; Castro Machado, F.J. 1998. Observaciones sobre la distribución vertical t caracterización de los registros ecoicos de algunas especies de peces costeros en la plataforma bonaerense. November 1994. INIDEP Informe Técnico 21, 133-141. Disponible en: http://hdl.handle.net/1834/2474.

Summary

Observations on the vertical distribution and characterization of the echogram of some coastal fish species in Buenos AIres shelf. November, 1994. Acoustic data were recorded by means of a scientific echosounder, during a survey carried out with R/V Dr. E.L.Holmberg in the coastal region off Buenos Aires, Argentina. Data were obtained in correlation with bottom trawl stations, aiming at characterizing the echo recording of several coastal fish species. Echo recording of the following species could be identified: white croaker Micropogonias furnieri, striped weakfish Cynoscion striatus, horse mackerel Trachurus lathami and red porgy Sparus pagrus. From these, some aspects of fish behaviour are described.In situ target strength measurements were taken with a split-beam transducer for striped weak fish, obtaining mean values of -43.9 dB and -42.9 dB for fish with mean length 17.0 cm and 18.5 cm respectively.