Transformando tropeços em passos de dança: o uso de espécies exóticas para estudos biogeográficos

• Autor(a) principal: LIMA JUNIOR, Dilermando Pereira
• Data de Publicação: 2008
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000004xxt
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tde/2548
• topic: Espécies exóticas; Peixes exóticos; Conservação de nicho; Exotic species; Invasive species; Exotic fish; Niche conservatism; CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA TEORICA

The establishment of exotic species is known for the negative impacts it causes. However, it can be used as models to study the ecological and evolutionary causes of biogeography patterns and access whether the niche conservatism is the determinant of the species limits distribution. The main purpose of this study is to evaluate the difference between pools of exotic fish species in biogeographical regions of the world based on the theories of Niche Conservatism and Evolutionary Dynamics of Latitudinal Gradients of Diversity. We found a strong tendency of the niche conservatism with exotic fishes, but no phylogentic structures of the invaders fishes were found. Therefore, predictive models that purpose to evaluate the potential invasion of fishes has to, include extrinsic factors as climatic conditions, propagule pressure, environmental disturbance, human use and intrinsic factors as parental care and body size of the species.