Fish introduction and parasites in marine ecosystems: a need for information |
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Authors: | Matthias Vignon Pierre Sasal |
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Institution: | 1.UMR 5244 CNRS EPHE UPVD, Biologie et écologie Tropicale et Méditerranéenne,Université de Perpignan Via Domitia,Perpignan cedex,France;2.UMS 2978 CNRS EPHE,Centre de Recherches Insulaires et Observatoire de l’Environnement (CRIOBE),Papetoai Moorea,France |
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Abstract: | Invasive species provide unique and useful systems by which to examine various ecological and evolutionary issues, both in
terms of the effects on native environments and the subsequent evolutionary impacts. While biological invasions are an increasing
agent of change in aquatic systems, alien species also act as vectors for new parasites and diseases. To date, colonizations
by hosts and parasites have not been treated and reviewed together, although both are usually interwoven in various ways and
may have unpredictable negative consequences. Fish are widely introduced worldwide and are convenient organisms to study parasites
and diseases. We report a global overview of fish invasions with associated parasitological data. Data available on marine
and freshwater are in sharp contrast. While parasites and diseases of inland freshwater fish, ornamental, reared and anadromous
fish species are well documented, leading to the emergence of several evolutionary hypotheses in freshwater ecosystems during
the last decade, the transfer of such organisms are virtually unexplored in marine ecosystems. The paucity of information
available on the parasites of introduced marine fish reflects the paucity of information currently available on parasites
of non-indigenous species in marine ecosystems. However, such information is crucial as it can allow estimations of the extent
to which freshwater epidemiology/evolution can be directly transferred to marine systems, providing guidelines for adapting
freshwater control to the marine environment. |
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