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Spread of the alien bleak Alburnus alburnus (Linnaeus, 1758) (Actinopterygii cyprinidae) in the Iberian Peninsula: The role of reservoirs

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Resumo:Since its first record in a tributary of the Ebro basin in 1992, the bleak Alburnus alburnus has spread to almost the whole Iberian Peninsula. In this paper (based on electrofishing surveys in 598 localities), we provide information on the expansion of the bleak. We detail current distribution in the Ebro basin and the rivers of the Eastern Pyrenees and we report its presence in three other major Iberian drainages. Currently, the bleak is sympatric with 15 Iberian endemic species (58% of total Iberian endemic fish). The possible threats to the rich Iberian ichthyofauna caused by the presence of the bleak are discussed. The factors that promoted the extremely rapid expansion of this exotic cyprinid are examined, focusing on the role of reservoirs, which seem to favour its dispersal.
Autores principais:Vinyoles, Dolors
Outros Autores:Robalo, Joana Isabel; Sostoa, Adolf de; Almodóvar, Ana María; Elvira, Benigno; Nicola, Graciela G.; Fernández-Delgado, Carlos; Santos, Carla Sousa; Doadrio, Ignacio; Sardá-Palomera, Francesc; Almada, Vítor Carvalho
Assunto:Cyprinids Distribution Fish introductions Iberian Peninsula Invasive species
Ano:2007
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Ispa-Instituto Universitário
Idioma:inglês
Origem:Repositório do Ispa - Instituto Universitário

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