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

Casimiro, A.C.R., Garcia, D., Vidotto-Magnoni, A.P., Britton, J.R., Agostinho, A.A., De Almeida, F.S. and Orsi, M., 2017. Escapes of non-native fish from flooded aquaculture facilities: the case of Paranapanema River, southern Brazil. Zoologia. (In Press)

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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 Oreochormis niloticus and Coptodon rendalli (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.

Item Type:Article
ISSN:1984-4670
Group:Faculty of Science & Technology
ID Code:29797
Deposited By: Unnamed user with email symplectic@symplectic
Deposited On:24 Oct 2017 10:51
Last Modified:24 Oct 2017 10:51

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