Affiliation:
1. Universidade do Estado de Minas Gerais, Brazil
2. Universidade Federal do Tocantins, Brazil
Abstract
Cage aquaculture has been developed in many countries, including Brazil. This form of production, although economically productive, may cause several impacts to the environment. Considering the historical relationship between aquaculture and species introduction, our study investigated the potential of cage aquaculture in spreading non-native species into hydroelectric reservoirs. We interviewed 19 fish farmers in Furnas Reservoir, Grande River basin. All producers have grown exclusively Nile tilapia (Oreochromis niloticus), an African fish, and all producers reported the occurrence of fish escapes. Releases were mainly accidental, but highly frequent during some management procedures, such as length classification, fish capture and juvenile stocking. Escapes were also reported due to cage damage and deliberate releases. These results indicate that, in cage aquaculture facilities, fish are frequently released to the external environment. When raising non-native species (e.g. Furnas Reservoir), these facilities constitute an important vector for fish introductions.
Subject
Aquatic Science,Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Reference22 articles.
1. Ecologia e manejo de recursos pesqueiros em reservatórios do Brasil;Agostinho A. A.,2007
2. Riscos da implantação de cultivos de espécies exóticas em tanques-redes em Reservatórios do rio Iguaçu;Agostinho A. A.;Cadernos da Biodiversidade,1999
3. Unidades de conservação: Ações para valorização da biodiversidade;Agostinho A. A.,2006
4. Concepção dos pescadores artesanais que utilizam o reservatório de Furnas, Estado de Minas Gerais, acerca dos recursos pesqueiros: um estudo etnoictiológico;Azevedo-Santos V. M.;Revista Biotemas,2010
5. Aquicultura: um mercado em expansão;Camargo S. G. O.;Revista Brasileira de Agrociências,2005
Cited by
51 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献