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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Nile tilapia invades the Lake Malawi catchment
African Journal of Aquatic Science, Volume 38, No. SUPPL.1, Year 2013
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Description
The Lake Malawi/Nyasa catchment contains over 835 endemic cichlid fish species. This unique biodiversity has made it widely recognised as one of the world's most significant freshwater ecosystems. Here we report the first occurrence records of two invasive tilapiines, Oreochromis niloticus and Oreochromis leucostictus, inside the Lake Malawi catchment. The introductions took place during initiatives to develop aquaculture and new capture fisheries. Oreochromis niloticus is an important competitor and predator of native species, has potential to hybridise with indigenous Oreochromis species, and has been widely implicated in biodiversity loss globally. It was a key contributor to the destruction of the Lake Victoria indigenous Oreochromis fishery. In light of apparent risks to unique biodiversity, and in the absence of robust evidence that introductions will bring enhanced socio-economic benefits over indigenous species, it is advisable that efforts be made to eradicate invasive species. The precautionary principle holds that future fisheries and aquaculture development in the region should be based exclusively on non-invasive indigenous species. © NISC (Pty) Ltd.
Authors & Co-Authors
Genner, Martin J.
United Kingdom, Bristol
University of Bristol
Connell, E.
United Kingdom, Bristol
University of Bristol
Shechonge, Asilatu H.
United Kingdom, Bangor
Bangor University
Smith, Alan M.
United Kingdom, Hull
University of Hull
Swanstrom, J.
United Kingdom, Bristol
University of Bristol
Mzighani, Semvua Isa
Tanzania, Dar es Salaam
Tanzania Fisheries Research Institute Tafiri
Mwijage, A.
Tanzania, Dar es Salaam
Tanzania Fisheries Research Institute Tafiri
Ngatunga, Benjamin P.
Tanzania, Dar es Salaam
Tanzania Fisheries Research Institute Tafiri
Turner, George Francis
United Kingdom, Bangor
Bangor University
Statistics
Citations: 9
Authors: 9
Affiliations: 4
Identifiers
Doi:
10.2989/16085914.2013.842157
ISSN:
16085914
Study Locations
Malawi