Temporal variation and characterization of grunt sounds produced by Atlantic cod Gadus morhua and pollack Pollachius pollachius during the spawning season

Lindsay Joanne Wilson, Mike Burrows, Gordon Drummond Hastie, Ben Wilson

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Fine-scale temporal patterning in grunt production and variation in grunt attributes in Atlantic cod Gadus morhua and pollack Pollachius pollachius was examined. Pollachius pollachius produced only a single sound type, the grunt, similar to that previously described for G. morhua. Sound production and egg production were correlated in P. pollachius but not in G. morhua. Only G. morhua displayed a strongly cyclical pattern, producing more grunts at night. Finer-scale temporal patterning in grunt production was observed in both species which produced significantly fewer grunts following a period of high grunt production. These quieter periods lasted up to 45 min for P. pollachius and up to 1h in G. morhua. Grunts were not always produced in isolation but organized into bouts in both species. Longer bouts were more frequent during periods of increased sound activity and were linked with changes in grunt characteristics including increased grunt duration, pulse duration and repetition period of each pulse combined with decreased dominant frequency. This study provides the first evidence of acoustic signalling being used by spawning P. pollachius and presents the most detailed analysis of the complexity of gadoid sound production.
Original languageEnglish
Pages (from-to)1014–1030
JournalJournal of Fish Biology
Volume84
Issue number4
Early online date19 Mar 2014
DOIs
Publication statusPublished - Apr 2014

Keywords

  • Acoustic Communication
  • Acoustic Signal
  • Gadoid
  • Mate Choice
  • Sound Production

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