, Volume 78, Issue 2, pp 183–188 | Cite as

An assessment of biological interactions in an epilithic stream community using time-lapse cinematography

  • Michael J. Wiley
  • Steven L. Kohler


In situ time-lapse cinematography was used to record and enumerate behavioral interactions between members of an epilithic insect community in a small Michigan (U.S.A.)trout stream. 145 interactions were observed during 78 hours of filming. Most of these (98%) involved simuliid larvae. Interactions between simuliid larvae occurred at about the same frequency as interactions between simuliids and other taxa. However, interactions between simuliid larvae were less likely to lead to emigration than were interactions between blackflies and other groups. Significant short-term fluctuations of faunal density on filmed surfaces were also observed. The causes of these fluctuations appeared varied. The results of a preliminary assessment of interactions and the usefulness of this technique are discussed.


behavioral interactions new technique time-lapse cinematography Simuliidae stream fauna standing crop competition 


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Copyright information

© Dr. W. Junk b. v. Publishers 1981

Authors and Affiliations

  • Michael J. Wiley
    • 1
  • Steven L. Kohler
    • 1
  1. 1.School of Natural ResourcesUniversity of MichiganAnn Arbor

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