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Parasitology Research

, Volume 108, Issue 6, pp 1501–1506 | Cite as

The European eel—the swim bladder–nematode system provides a new view of the invasion paradox

  • Carlos Martínez-Carrasco
  • Emmanuel Serrano
  • Rocio Ruiz de Ybáñez
  • José Peñalver
  • José Antonio García
  • Alfonsa García-Ayala
  • Sergé Morand
  • Pilar Muñoz
Original Paper

Abstract

It is widely assumed that the likelihood of invasion decreases with increased species richness in the recipient community. However, the invasion paradox supports a negative and a positive relationship between native biodiversity and the success of an invader. Here, we show that for a host–parasite system (Anguilla anguilla as host and Anguillicoloides crassus as parasitic invader), invasion increases with native micro- and macroparasitic species richness. In fact, about 30% of the A. crassus intensity in eels could be explained by the number of both micro- and macroparasite species. This pattern could be due to the fact that A. crassus exploits a niche (the swim bladder) that is unoccupied by native parasite species and by the Th1/Th2 trade-off between native microparasites and the invader. We conclude that the host–parasite system resistance to invasion may depend on both niche availability and the Th1/Th2 trade-off. As well, we encourage researchers to incorporate native parasite richness as a risk factor in epidemiological models of A. crassus.

Keywords

Species Richness Parasite Community Akaike Information Criterion Correct Parasite Invasion Parasite Diversity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by Fundación Séneca, Coordination Centre for Research (grant 04538/GERM/06). The authors wish to thank E. Romero for his assistance with the eel sampling and D. Riquelme for his technical assistance with parasite processing. E. Serrano is supported by the Juan de la Cierva postdoctoral programme of the MICINN, Spain.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Carlos Martínez-Carrasco
    • 1
  • Emmanuel Serrano
    • 2
  • Rocio Ruiz de Ybáñez
    • 1
  • José Peñalver
    • 3
  • José Antonio García
    • 4
  • Alfonsa García-Ayala
    • 5
  • Sergé Morand
    • 6
  • Pilar Muñoz
    • 1
  1. 1.Departamento de Sanidad Animal, Facultad de VeterinariaUniversidad de MurciaMurciaSpain
  2. 2.Servei d’Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia AnimalsUniversitat Autònoma de BarcelonaBarcelonaSpain
  3. 3.Dirección General de Ganadería y PescaComunidad Autónoma de la Región de MurciaMurciaSpain
  4. 4.Departamento de Sanidad AnimalUniversidad Complutense de MadridMadridSpain
  5. 5.Departamento de Biología Celular e HistologíaUniversidad de MurciaMurciaSpain
  6. 6.Institut des Sciences de l’EvolutionUniversité de Montpellier 2MontpellierFrance

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