Scholar : African Journal of Aquatic Science, Volume 42, Issue 4, December 2017 is now available online on Taylor & Francis Online

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The online platform for Taylor & Francis Online content African Journal of Aquatic Science, Volume 42, Issue 4, December 2017 is now available online on Taylor & Francis Online. This new issue contains the following articles: Review Paper Freshwater crayfish invasions in South Africa: past, present and potential future AL Nunes, TA Zengeya, GJ Measey & OLF Weyl Pages: 309-323 | DOI: 10.2989/16085914.2017.1405788 Opinion Why suggesting Australian redclaw crayfish Cherax quadricarinatus as biological control agents for snails is a bad idea OLF Weyl, AL Nunes, BR Ellender, PSR Weyl, AC Chilala, FJ Jacobs, M Murray-Hudson & RJ Douthwaite Pages: 325-327 | DOI: 10.2989/16085914.2017.1414685 Research Papers Microfossils in surface sediments of brackish waters on the west coast of South Africa and their palaeoecological implications S Fürstenberg, N Gründler, S Meschner & P Frenzel Pages: 329-339 | DOI: 10.2989/16085914.2017.1406326 Heavy metal concentrations in, and human health risk assessment of, three commercially valuable fish species in the lower Niger River, Nigeria JC Madu, GE Odo, CN Asogwa & CD Nwani Pages: 341-349 | DOI: 10.2989/16085914.2017.1410463 Heavy metal contamination of water and fish in peri-urban dams around Bulawayo, Zimbabwe C Teta, M Ncube & YS Naik Pages: 351-358 | DOI: 10.2989/16085914.2017.1392925 Invasion status of Florida bass Micropterus floridanus (Lesueur, 1822) in South Africa OLF Weyl, MK Schirrmann, JS Hargrove, T Bodill & ER Swartz Pages: 359-365 | DOI: 10.2989/16085914.2017.1398131 Effect of large weirs on abundance and diversity of migratory Labeobarbus species in tributaries of Lake Tana, Ethiopia G Shewit, A Getahun, W Anteneh, B Gedif, B Gashu, B Tefera, Z Berhanie & D Alemaw Pages: 367-373 | DOI: 10.2989/16085914.2017.1411774 Systematic reinstatement of Schilbe depressirostris (Peters, 1852), based on differences in DNA barcoding and morphology, from Schilbe intermedius Rüppell, 1832 (Siluriformes, Schilbeidae) HF van der Bank, BS Bezeng & PH Skelton Pages: 375-379 | DOI: 10.2989/16085914.2017.1413323 Benthic freshwater nematode community dynamics under conditions of Tilapia aquaculture in Egypt AEA Abada, NF Ghanim, AH Sherif & NA Salama Pages: 381-387 | DOI: 10.2989/16085914.2017.1410464 Hoping to have your article read by anyone, anywhere and at any time? Find out more about publishing open access with Ecosystem Health and Sustainability. To update which email alerts you receive, manage your alerts within the My Account area. You can also unsubscribe from this alert with one click. If you need any further help, please contact us at support@tandfonline.com Please do not reply to this email. To ensure that you receive your alerts and information from Taylor & Francis Online, please add "alerts@tandfonline.com" and "info@tandfonline.com" to your safe senders list. Taylor & Francis, an Informa business. Taylor & Francis is a trading name of Informa UK Limited, registered in England under no. 1072954. Registered office: 5 Howick Place, London, SW1P 1WG.