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Biogeography of the southern cool-temperate galaxioid fishes: evidence from metazoan macroparasite faunas

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Abstract Aim

This study seeks evidence for coevolution between the galaxioid fish families, Galaxiidae and Retropinnidae, and their macroparasites as a means of adding to our understanding of the biogeography of the fish families. Location

These families are characteristic southern cool-temperate elements in the fish faunas of Australia, New Zealand and southern South America and some southern/sub-Antarctic islands. Methods

The analysis is based on a review of the literature. Results

Analysis showed that in each area fish species have parasites that are representative of the general fish parasite faunas of that area, rather than those characteristic of, or specific to, either these galaxioid families or the genera and species that they contain. In many instances the parasites also infect exotic fish species introduced into each area. Main conclusions

There is little evidence that parasite faunas have coevolved with the fish hosts. Parasite data therefore provide little support for a vicariance biogeography of galaxioid fishes in the southern cool-temperate region. Also, the data do not conflict with dispersal hypotheses for that biogeography.
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Keywords: Australia; Galaxiidae; New Zealand; Retropinnidae; South America; coevolution; fishes; parasites

Document Type: Research Article

Publication date: 01 September 2000

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