Environmental Biology of Fishes

, Volume 72, Issue 3, pp 313–320

Microelectronic detection of activity level and magnetic orientation of yellow European eel, Anguilla anguilla L., in a pond

  • V. van Ginneken
  • B Muusze
  • J. Klein Breteler
  • D. Jansma
  • G. van den Thillart
Article

DOI: 10.1007/s10641-004-2585-2

Cite this article as:
Ginneken, V.v., Muusze, B., Breteler, J.K. et al. Environ Biol Fish (2005) 72: 313. doi:10.1007/s10641-004-2585-2

Synopsis

We studied the circadian and monthly activity, the distribution patterns, and orientation to the earth’s magnetic field, of yellow (non-migratory) female eels in a freshwater pond by means of microchips injected into their muscles. Detectors for microchips mounted in tubes were placed in the pond to detect if eels oriented themselves with respect to earth’s magnetic field. Based on the frequency of tube visits (search for shelter), the data indicated that the presence of eel in the tubes decreases gradually during the study period. We saw more activity during the night in the first months. There was a seasonal component in the orientation mechanism, with a significantly lower preference component in the summer compared to the fall. A preference for tubes oriented in a south-southwest direction (the direction of the Sargasso Sea) in fall suggests an orientation to the earth’s magnetic field.

Keywords

circadian rhythmmigrationtrackingactivity patternsgeomagnetism

Copyright information

© Springer 2005

Authors and Affiliations

  • V. van Ginneken
    • 1
  • B Muusze
    • 1
  • J. Klein Breteler
    • 2
  • D. Jansma
    • 1
  • G. van den Thillart
    • 1
  1. 1.Integrative ZoologyInstitute of Biology LeidenLeidenThe Netherlands
  2. 2.Organization for Improvement of Inland FisheriesNieuwegeinThe Netherlands