Environmental Biology of Fishes

, Volume 70, Issue 4, pp 427–433

Acoustic Repertoire of Spawning Cod, Gadus morhua

  • Jens L. Finstad
  • Jarle T. Nordeide
Article

Abstract

We examine the vocal repertoire of spawning cod, Gadus morhua. Fish captured in northern Norway were allowed to spawn in tanks and we recorded sound during the spawning period. The cod's grunt repertoire contained more variation than previously suggested. Half of the grunts lasted more than 200 ms including one grunt lasting nearly 1 s and consisting of 52 pulses, which is far beyond previous reports. Moreover, increasing repetition period and increasing duration of pulses within a grunt from the first pulse towards pulses at the end of the grunt, has previously not been described. On the other hand, no knocks or series of knocks, and on average only one grunt per hour suggest that cod are less versatile vocalists than closely related gadid species, such as haddock, Melanogrammus aeglefinus.

mating calls behaviour underwater sound passive acoustics acoustic communication 

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Copyright information

© Kluwer Academic Publishers 2004

Authors and Affiliations

  • Jens L. Finstad
    • 1
  • Jarle T. Nordeide
    • 2
  1. 1.Department of Fisheries and Natural SciencesBodø Regional UniversityBodøNorway
  2. 2.Department of Fisheries and Natural SciencesBodø Regional UniversityBodøNorway

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