Inter-population plasticity in growth and reproduction of invasive bleak,Alburnus alburnus(Cyprinidae, Actinopterygii), in northeastern Iberian Peninsula

Inter-population plasticity in dietary traits of invasive bleakAlburnus alburnus(Linnaeus, 1758) in Iberian fresh waters

“…Similarly, Masó et al. () found the bleak population in the Foix stream to be in poor health with regard to growth rate, body condition and late sexual maturity.…”

“…Accordingly, dietary traits were highly variable among the studied streams, indicating wide interpopulation plasticity in bleak foraging strategies dependent on local conditions. Similarly for other biological attributes (i.e., growth and reproduction), Masó et al (2016) suggested that this great plasticity helps to successfully invade novel Mediterranean freshwater ecosystems.…”

“…This could increase their algae intake, despite this food category having less energy content as suggested by Chappaz, Brun, and Olivari (1987), who reported a relationship between the high presence of algal debris in the bleak diet of some individuals and their lesser growth/fecundity levels. Similarly, Masó et al (2016) found the bleak population in the Foix stream to be in poor health with regard to growth rate, body condition and late sexual maturity.…”

“…Similarly for other biological attributes (i.e., growth and reproduction), Masó et al. () suggested that this great plasticity helps to successfully invade novel Mediterranean freshwater ecosystems.…”

“…Since its introduction, the bleak has displayed a strong invasive character and is potentially an aggressive competitor for the native fish fauna (Leunda, 2010). Information on this species in the Iberian Peninsula is limited to spatial distribution (Vinyoles et al, 2007), size structure (Almeida, Stefanoudis, Fletcher, Rangel, & da Silva, 2014), and growth rates (Masó, Latorre, Almeida, Tarkan, & Vila-Gispert, 2016).…”