Bradbeer, SJ orcid.org/0000-0002-6844-6194, Ngatunga, BP, Turner, GF et al. (1 more author) (2020) Relative growth of invasive and indigenous tilapiine cichlid fish in Tanzania. African Journal of Aquatic Science, 45 (3). pp. 378-381. ISSN 1608-5914
Abstract
Non-native species have been widely distributed across Africa for the enhancement of capture fisheries, but it can be unclear what benefits in terms of fisheries production the non-native species bring, compared with native species. Here we compared the relative growth rate of sympatric populations of non-native Oreochromis niloticus (Nile tilapia) to native Oreochromis jipe (Jipe tilapia) in three waterbodies in northern Tanzania. Using scale increments as a proxy for growth, we found that O. niloticus had a high growth rate relative to O. jipe, with the highest growth rates for O. niloticus being observed in the Nyumba ya Mungu reservoir. These results help to explain why O. niloticus could be a superior competitor to native species in some circumstances. However, more introductions of this non-native species should be undertaken with caution given potential for negative ecological impacts on threatened indigenous tilapia species.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright © NISC (Pty) Lt. This is an author produced version of an article published in African Journal of Aquatic Science. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | aquaculture, fisheries production, Jipe tilapia, Nile tilapia, non-native species, Oreochromis jipe, Oreochromis niloticus |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Feb 2020 11:04 |
Last Modified: | 17 Nov 2022 16:01 |
Status: | Published |
Publisher: | Taylor & Francis |
Identification Number: | 10.2989/16085914.2019.1703169 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:156581 |