Evaluating invasion risk for freshwater fishes in South Africa

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dc.contributor.author Marr, S.M.
dc.contributor.author Ellender, B.R.
dc.contributor.author Woodford, D.J.
dc.contributor.author Alexander, M.E.
dc.contributor.author Wasserman, R.J.
dc.contributor.author Ivey, P.
dc.contributor.author Zengeya, T.
dc.contributor.author Weyl, O.L.F.
dc.date.accessioned 2017-09-22T12:31:59Z
dc.date.available 2017-09-22T12:31:59Z
dc.date.issued 2017-03
dc.identifier.citation Marr, S.M. et al. 2017. Evaluating invasion risk for freshwater fishes in South Africa. Bothalia 47(2), Article number a2177. en_ZA
dc.identifier.issn 0006-8241 (Print)
dc.identifier.issn 2311-9284 (Online)
dc.identifier.uri http://hdl.handle.net/10539/23147
dc.description.abstract South Africa, as a signatory of the Convention on Biological Diversity, has an obligation to identify, prioritise and manage invasive species and their introduction pathways. However, this requires knowledge of the introduction pathways, factors influencing establishment success, invasive potential, current distributions and ecological impacts. Objectives: To evaluate the Fish Invasiveness Screening Kit (FISK) to predict the invasion risk posed by fish species proposed for introduction into South Africa. Method: FISK assessments were compiled for species whose invasion status in South Africa was known. A Receiver operating characteristic (ROC) analysis was conducted to calibrate the FISK for South Africa. The calibrated FISK was used to evaluate the risk that three species recently proposed for importation for aquaculture could become invasive in South Africa. Results: A FISK score of 14 was identified as the threshold to delineate between species that could become invasive in South Africa and those that are unlikely to become invasive. Of the three species evaluated, Silurus glanis had a high risk of becoming invasive in South Africa, Lates calcarifer was likely to be invasive and Oncorhynchus tshawytscha was unlikely to be invasive in South Africa. Conclusion: FISK was demonstrated to be a useful risk assessment tool to evaluate the invasion risk posed by species proposed for use in aquaculture. For the large number of fish imported for the pet trade, a rapid screening assessment to flag potentially high risk species was recommended prior to a full FISK assessment for flagged species. en_ZA
dc.language.iso en en_ZA
dc.publisher National Botanical Institute/AOSIS en_ZA
dc.rights © 2017. The Authors. Licensee: AOSIS. This work is licensed under the Creative Commons Attribution License. en_ZA
dc.subject freshwater en_ZA
dc.subject fish en_ZA
dc.subject south africa en_ZA
dc.subject invasion risk en_ZA
dc.title Evaluating invasion risk for freshwater fishes in South Africa en_ZA
dc.type Article en_ZA
dc.journal.volume 47 en_ZA
dc.journal.title Bothalia en_ZA
dc.description.librarian EM2017 en_ZA
dc.citation.doi 10.4102/abc.v47i2.2177 en_ZA
dc.citation.issue 2 en_ZA


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