Abstract
Feeding on micro-algae is shown in the invasive Ponto-Caspian amphipod Dikerogammarus villosus. Compared with controls, males, females and juveniles of this species significantly reduced the concentration in suspension of unicellular micro-algae. Juveniles had higher concentrations of algae in the cardiac gut than adults. The presence of these algae in the mid- and hindgut was also recorded. This feeding behaviour was filmed and the mechanisms involved are described and discussed. We comment on the use of the Functional Feeding Group (FFG) concept to classify feeding in amphipods. The role of being a feeding-generalist in aiding the invasion process is also discussed.
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Acknowledgements
The authors thank Prof. (Em.) Frederick Schram (IBED) for his critical comments on the manuscript. We also thank Prof. Dr. Jef Huisman and Mrs. Corrien Sigon from the Aquatic Microbiology Department of the Institute for Biodiversity and Ecosystem Dynamics (IBED) of the University of Amsterdam for providing us with the algae used in this study, and Mr. Jan van Arkel (IBED) for his photographic contribution. Also, the editor of the journal and two unknown referees are thanked for their critical remarks.
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An erratum to this article can be found at http://dx.doi.org/10.1007/s10452-006-9034-6
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Platvoet, D., Dick, J., Konijnendijk, N. et al. Feeding on micro-algae in the invasive Ponto-Caspian amphipod Dikerogammarus villosus (Sowinsky, 1894). Aquat Ecol 40, 237–245 (2006). https://doi.org/10.1007/s10452-005-9028-9
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DOI: https://doi.org/10.1007/s10452-005-9028-9