PEIXES EXÓTICOS INVASORES DE ÁGUA DOCE NO BRASIL: OCORRÊNCIA, DISTRIBUIÇÃO E IDENTIFICAÇÃO

Abstract

Exotic species are present in several natural ecosystems and cause great disturbances to native biodiversity. The impacts of the introduction of invasive alien species have a direct impact on socio environmental and financial issues in the region in which it is located. In Brazil there are several species of exotic fish invasive in continental waters. The hydrographic basins of the continents of Africa, Asia, and North America are some of the original sources of the species that arrive in Brazil. There are species that are commonly found, while others have more restricted distributions, although effects such as predation on native species represent a major threat when introduced into nature. There are regulatory aspects that seek to prevent, control or eradicate exotic species that threaten ecosystems, habitats or native species, such as Federal Decree 2519/98. And also Decree No. 4.339/02 with similar attributions to control invasive alien species that can alter biodiversity. In this sense, two chapters will be prepared that will work on the introduction of invasive alien species in the country's freshwater. The first will deal with the invasion of African catfish in aquatic ecoregions in South America considering current occurrences and future projections according to climate scenarios. The second chapter will present laws and a list of fish species with great invasive potential in Brazilian continental waters.