Using the Judas technique to locate and remove wintertime aggregations of invasive common carp

P. G. Bajer, C. J. Chizinski, P. W. Sorensen

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

Radio- and acoustic telemetry in three Midwestern lakes demonstrated that common carp, Cyprinus carpio L., aggregate as water temperatures descend below 10°C. Particularly dense aggregations formed at temperatures <5°C, and once located, these aggregations could be removed with an efficiency of up to 94% using seine nets. Carp aggregated just below the surface of the ice (approximately 1.5m) and rarely descended to warmer waters, which extended down to 10m. Although aggregations consistently formed close to shore, their locations could not be explained by temperature or dissolved oxygen. The aggregations also moved frequently, making radio-tagged fish invaluable to locate them. Coldwater aggregations of carp may reflect a type of shoaling behaviour and can be exploited with the aid of radio-tagged (Judas) fish to control this invasive fish effectively. Similar approaches might be developed for other gregarious invasive fishes.

Original languageEnglish (US)
Pages (from-to)497-505
Number of pages9
JournalFisheries Management and Ecology
Volume18
Issue number6
DOIs
StatePublished - Dec 2011

Keywords

  • Acoustic telemetry
  • Invasive species
  • Mark-recapture
  • Nearest neighbour
  • Radiotelemetry
  • Winter seining

Fingerprint Dive into the research topics of 'Using the Judas technique to locate and remove wintertime aggregations of invasive common carp'. Together they form a unique fingerprint.

Cite this