dc.contributor.author |
Booth, Anthony J.
|
|
dc.contributor.author |
Zengeya, Tsungai Alfred
|
|
dc.contributor.author |
Chimimba, Christian Timothy
|
|
dc.date.accessioned |
2016-02-17T09:36:25Z |
|
dc.date.available |
2016-02-17T09:36:25Z |
|
dc.date.issued |
2015-07-14 |
|
dc.description.abstract |
This study developed niche models for the native ranges of Oreochromis
andersonii, O. mortimeri, and O. mossambicus, and assessed how much of their range is
climatically suitable for the establishment of O. niloticus, and then reviewed the
conservation implications for indigenous congenerics as a result of overlap with
O. niloticus based on documented congeneric interactions. The predicted potential
geographical range of O. niloticus reveals a broad climatic suitability over most of southern
Africa and overlaps with all the endemic congenerics. This is of major conservation
concern because six of the eight river systems predicted to be suitable for O. niloticus have
already been invaded and now support established populations. Oreochromis niloticus has
been implicated in reducing the abundance of indigenous species through competitive
exclusion and hybridisation. Despite these well-documented adverse ecological effects,
O. niloticus remains one of the most widely cultured and propagated fish species in
aquaculture and stock enhancements in the southern Africa sub-region. Aquaculture is
perceived as a means of protein security, poverty alleviation, and economic development
and, as such, any future decisions on its introduction will be based on the trade-off between socio-economic benefits and potential adverse ecological effects. |
en_ZA |
dc.description.librarian |
am2015 |
en_ZA |
dc.description.sponsorship |
The South African Working for Water
(WfW) Programme through the DST-NRF Centre of Excellence for Invasion Biology (CIB),
University of Pretoria, South Africa. It also benefited from partial funding from the South African
National Biodiversity Institute (SANBI). |
en_ZA |
dc.description.uri |
http://www.mdpi.com/journal/entropy |
en_ZA |
dc.identifier.citation |
Zengeya, TA, Booth, AJ & Chimimba, CT 2015, 'Broad niche overlap between invasive Nile tilapia oreochromis niloticus and indigenous congenerics in Southern Africa : should we be concerned?', Entropy, vol. 17, pp. 4959-4973. |
en_ZA |
dc.identifier.issn |
1099-4300 |
|
dc.identifier.other |
:10.3390/e17074959 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/51426 |
|
dc.language.iso |
en |
en_ZA |
dc.publisher |
MDPI Publishing |
en_ZA |
dc.rights |
© 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license. |
en_ZA |
dc.subject |
Ecological niche modelling |
en_ZA |
dc.subject |
Invasion |
en_ZA |
dc.subject |
Indigenous fishes |
en_ZA |
dc.subject |
Nile tilapia |
en_ZA |
dc.subject |
Conservation |
en_ZA |
dc.subject |
Southern Africa |
en_ZA |
dc.title |
Broad niche overlap between invasive Nile tilapia oreochromis niloticus and indigenous congenerics in Southern Africa : should we be concerned? |
en_ZA |
dc.type |
Article |
en_ZA |