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      A co-invasive microsporidian parasite that reduces the predatory behaviour of its host Dikerogammarus villosus (Crustacea, Amphipoda).

      1 , 1 , 1

      Parasitology

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          Abstract

          Parasites are known to affect the predatory behaviour or diet of their hosts. In relation to biological invasions, parasites may significantly influence the invasiveness of the host population and/or mediate the relationships between the invader and the invaded community. Dikerogammarus villosus, a recently introduced species, has had a major impact in European rivers. Notably, its high position in trophic web and high predatory behaviour, have both facilitated its invasive success, and affected other macroinvertebrate taxa in colonized habitats. The intracellular parasite Cucumispora dikerogammari, specific to D. villosus, has successfully dispersed together with this amphipod. Data presented here have shown that D. villosus infected by this parasite have a reduced predatory behaviour compared with healthy individuals, and are much more active suggesting that the co-invasive parasite may diminish the predatory pressure of D. villosus on newly colonized communities.

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          Author and article information

          Journal
          Parasitology
          Parasitology
          1469-8161
          0031-1820
          Feb 2014
          : 141
          : 2
          Affiliations
          [1 ] Laboratoire Biogéosciences, UMR CNRS 6282, Équipe Écologie Évolutive, Université de Bourgogne, 21000 Dijon, France.
          Article
          S0031182013001510
          10.1017/S0031182013001510
          24135318

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