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      Escapes of non-native fish from flooded aquaculture facilities: the case of Paranapanema River, southern Brazil

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          Abstract

          ABSTRACT Non-native species are a major driver of biodiversity loss. Aquaculture activities play a key role in introductions, including the escape of fishes from fish farm facilities. Here, the impact of flooding due to El Niño rains in 2015/2016 in the Lower and Middle Paranapanema River basin, southern Brazil, was investigated by evaluating fish escapes from 12 fish farms. The flooding resulted in the escape of approximately 1.14 million fishes into the river, encompassing 21 species and three hybrids. Non-native species were the most abundant escapees, especially Oreochromis niloticus (Linnaeus, 1758) and Coptodon rendalli (Boulenger, 1897) (96% of all fish). Only seven native fishes were in the escapee fauna, comprising 1% of all fish. Large floods, coupled with inadequate biosecurity, thus resulted in considerable inputs of non-native fish into this already invaded system.

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          Most cited references 43

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          Current knowledge on non-native freshwater fish introductions

           J. Britton,  G Copp,  I. Cowx (2010)
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            Introduction of non-native freshwater fish can certainly be bad

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              Introduction of non-native freshwater fish: is it all bad?

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                Author and article information

                Journal
                zool
                Zoologia (Curitiba)
                Zoologia (Curitiba)
                Sociedade Brasileira de Zoologia (Curitiba, PR, Brazil )
                1984-4670
                1984-4689
                2018
                : 35
                Affiliations
                Maringá Paraná orgnameUniversidade Estadual de Maringá orgdiv1Departamento de Biologia orgdiv2Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura Brazil
                Londrina Paraná orgnameUniversidade Estadual de Londrina orgdiv1Departamento de Biologia Animal e Vegetal orgdiv2Laboratório de Genética e Ecologia Animal Brazil
                Londrina Paraná orgnameUniversidade Estadual de Londrina orgdiv1Departamento de Biologia Animal e Vegetal orgdiv2Laboratório de Ecologia de Peixes e Invasões Biológicas Brazil
                Poole orgnameBournemouth University orgdiv1School of Applied Sciences orgdiv2Centre for Conservation Ecology and Environmental Sciences United Kingdom
                Article
                S1984-46702018000100504 S1984-4670(18)03500000504
                10.3897/zoologia.35.e14638

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Figures: 0, Tables: 0, Equations: 0, References: 38, Pages: 0
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