Publication: The European eel —the swim bladder– nematode system provides a new view of the invasion paradox
Authors
Martínez-Carrasco, Carlos ; Serrano, Emmanuel ; Ruiz de Ybáñez, Rocío ; Peñalver, José ; García, José Antonio ; Morand, Sergé ; Muñoz, Pilar ; García Ayala, Alfonsa
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Publisher
Springer-Verlag
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DOI
https://doi.org/10.1007/s00436-010-2200-8
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info:eu-repo/semantics/article
Description
©Springer-Verlag 2010. This manuscript version is made available under the CC-BY license http://creativecommons.org/licenses/by-nc-nd/4.0/. This document is the Published, version of a Published Work that appeared in final form in Parasitology Research. To access the final edited and published work see https://doi.org/10.1007/s00436-010-2200-8
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 Anguilli-coloides 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.
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