The invasive potential of tilapias (Osteichthyes, Cichlidae) in the Americas

The invasion of tilapia can result in substantial impacts on native communities. Thus, understanding the spatial dynamics of invasions may help prevent future introductions and mitigate impacts. This study estimated the environmentally suitable areas for occurrence of eight tilapia species (genera C...

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Bibliographic Details
Published in:Hydrobiologia 2018-07, Vol.817 (1), p.133-154
Main Authors: Cassemiro, Fernanda A. S., Bailly, Dayani, da Graça, Weferson Júnio, Agostinho, Angelo Antônio
Format: Article
Language:English
Subjects:
Aquaculture
Basins
Biomedical and Life Sciences
Cichlidae
Concentrates (ores)
Dynamics
Ecological distribution
Ecological niches
Ecology
Endangered & extinct species
Fish
Fish populations
Fishes
Freshwater & Marine Ecology
Freshwater fishes
Indigenous peoples
Invasive species
Invasive Species II
Life Sciences
Native species
Niches
Niches (Ecology)
Nonnative species
Policies
Species
Tilapia
Zoology
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Summary:The invasion of tilapia can result in substantial impacts on native communities. Thus, understanding the spatial dynamics of invasions may help prevent future introductions and mitigate impacts. This study estimated the environmentally suitable areas for occurrence of eight tilapia species (genera Coptodon, Oreochromis, Pelmatolapia , and Sarotherodon ) in the Americas and their invasive potential using Ecological Niche Models (ENMs). The United States is the most invaded country, receiving all tilapia species. In South America, the southeast and south regions of Brazil are highlighted as the areas where two species are concentrated. The ENMs predicted that all tilapia species have high invasive potential in the Americas, and despite having more tilapias in North America, South and Central Americas are more susceptible to tilapia invasion. All South American basins were predicted to harbor tilapia species that have not yet arrived on the subcontinent. Our study evidences the need to implement management measures and governmental policies in the Americas to deal with problems caused by tilapia introductions. In North America, the focus is on the control of tilapia populations and in Central and South America priority should be given to contention of introduction processes.
ISSN:0018-8158
1573-5117
DOI:10.1007/s10750-017-3471-1