Life history responses to variations in temperature by the marine amphipod <Emphasis Type="Italic">Eogammarus possjeticus</Emphasis> (Gammaridae) and their implications for productivity in aquaculture |
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Authors: | " target="_blank">Suyan Xue Yuze Mao Jiaqi Li Lixin Zhu Jianguang Fang Fazhen Zhao |
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Institution: | 1.Universidade Federal de Goiás, Programa de Pós-Gradua??o em Ecologia e Evolu??o,Goiania,Brazil;2.Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura/Programa de Pós-Gradua??o em Ecologia de Ambientes Aquáticos Continentais,Universidade Estadual de Maringá,Maringá,Brazil |
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Abstract: | 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. |
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