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JPR Advance Access published online on May 27, 2008
Journal of Plankton Research, doi:10.1093/plankt/fbn060
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© The Author 2008. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Using plankton nets as light traps: Application with chemical light

George Kehayias, Mariana Antonou, Maria Zerva and Ilias Karachalios

Department of Environmental and Natural Resources Management, University of Ioannina, Seferi 2, 30 100 Agrinio, Greece

E-mail: gkechagi{at}cc.uoi.gr

Received on March 24, 2008; revised on May 23, 2008; accepted on May 26, 2008


  Abstract

Plankton nets equipped with chemical light showed increased abilities in capturing zooplankton and ichthyoplankton and proved effective for the collection of rare organisms not usually caught in nets.

A great number and variety of light traps have been employed to attract and capture mainly fish larvae in marine and freshwater ecosystems. In most of these devices the light was produced from battery powered fluorescent lamps or LED lights (see Hickford and Schiel, 1999; Gyekis, 2006). Chemical light has also been used in a few light traps and proved efficient in attracting fish larvae (Gehrke, 1994; Kehayias and Doulka, 2007), benthic crustaceans (Hovda and Fosshagen, 2003) and lake cladocerans (Kehayias, 2006). Plankton nets are widely used for sampling zooplankton and ichthyoplankton, and in a few cases light sources have been used in combination to enhance the attraction of such organisms (Rooker et al., 1996; Wiebe et al. 2004, and references therein), although none of these designs operated with chemical light. The aim of this study was to modify two common plankton nets into light traps using Cyalume® light sticks as the light source, and to test their effectiveness in attracting and capturing aquatic organisms in two different aquatic ecosystems in western Greece.

Communicating Editor: Dr John Dolan


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