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Elimination of feral fish and a co-invasive alien parasite in Broz Park, Shire of Mundaring
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Elimination of feral fish and a co-invasive alien parasite in Broz Park, Shire of Mundaring

David Morgan, Cindy Palermo and Stephen J Beatty
Murdoch University report to the Shire of Mundaring
Murdoch University. Harry Butler Institute
2023
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Elmination of feral fish Broz Park feral fish control report AUGUST 20231.06 MBDownloadView
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Abstract

Ecology
Goldfish (and Koi) are known to exacerbate algal blooms which can lead to increased turbidity and thus ecosystem alteration and function. They achieve this unwanted outcome by resuspending nutrients because of their vigorous bottom feeding, making nutrients available to algae. One study demonstrated that significant growth of blue‐green algae can be stimulated by the passage through Goldfish intestines, where it is thought that this process gives nutrient enrichment to the algae (Kolmakov and Gladyshev 2003). It is likely that Koi infestations cause similar unwanted environmental outcomes…

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