Feeding ecology of the Iberian cyprinid Barbus bocagei Steindachner, 1865 in a lowland river

Magalhãtes, M. F.

doi:10.1111/j.1095-8649.1992.tb02559.x

Cited by 29 publications

(32 citation statements)

References 13 publications

(8 reference statements)

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“…Our results from the network of minimally disturbed sites generally corroborated the organisation of freshwater fish communities in western Iberia that had been revealed in some earlier works (Godinho et al 1997;Filipe et al 2002;Santos et al 2004a) and in other geographical areas (Lyons 1989;Rahel & Hubert 1991). In fact, cyprinids, such as B. bocagei and C. polylepis, eat large amounts of plant material (Magalhães 1992;Collares-Pereira et al 1996), and S. alburnoides is a phytophil spawner (Fame Consortium 2004). Cover may be important for resting and hiding, and can be related to invertebrate production (particularly submerged and emergent species) and structural habitat complexity (Moyle & Cech 1996).…”

Section: Discussionsupporting

confidence: 88%

Regional and local environmental correlates of native Iberian fish fauna

Ferreira¹,

Sousa²,

Santos³

et al. 2007

Ecology of Freshwater Fish

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Knowledge of fishes' habitat requirements is an essential tool for species conservation. We examined the habitat requirements of nine native freshwater fish species using 165 undisturbed or minimally disturbed sites from eight river basins in western Iberia (northern and central Portugal). Six environmental descriptors were considered at the regional level, and six descriptors at a local scale. Statistical associations between local assemblage structure and environmental variables were quantified by canonical correspondence analyses. Logistic regression was performed for each species to identify regional and local factors related to its distribution at the sample sites. The results suggested a reasonable degree of specialisation in the use of local variables and dependence on regional variables. Logistic regression models showed a good adjustment (0.75 < AUC < 0.93). Results of habitat modelling using minimally disturbed sites helped to clarify species preferences for specific abiotic drivers.

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Section: Discussionsupporting

confidence: 88%

Regional and local environmental correlates of native Iberian fish fauna

Ferreira¹,

Sousa²,

Santos³

et al. 2007

Ecology of Freshwater Fish

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“…The ability of cyprinids to feed on detritus and plant material may have a high competitive value in environments with severe competition (Magalhaes, 1992) and may reduce the inter-specific competition in the area studied. Moreover, resource partitioning may also occur at the level of prey size, although it is not clear whether this size selective strategy is adopted to reduce interspecific competition or it is the result of foraging behaviour and/or morphological constraints such as gape size (Stevens et al, 2006), as it may be the case in our study.…”

Section: Discussionmentioning

confidence: 99%

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Sánchez‐Hernández

Vieira‐Lanero²,

Servia

et al. 2011

Hydrobiologia

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Trophic interactions are important factors structuring animal communities. We assessed the trophic relations of four fish species that live in sympatry in the River Ladra (NW Spain), and cluster analysis differentiated two feeding strategies: (1) species with omnivorous feeding habits, feeding mainly on detritus and plant material but with aquatic macroinvertebrates as an important complement (Achondrostoma arcasii and Pseudochondrostoma duriense) and (2) species feeding mainly (Salmo trutta) or exclusively (Gasterosteus gymnurus) on aquatic macroinvertebrates. Concerning ingested macroinvertebrates, the trophic overlap was quantified using Schoener's index and the results obtained revealed a high diet overlap among the species (from 81.3 up to 99.2%). In order to get a deeper insight into mechanisms of fish species coexistence, we used ten biological and ecological traits of macroinvertebrate prey to discriminate feeding preferences. As a result, despite the high similarity among the diets, our analyses suggest that differences in diel activity patterns and drift behaviour of preys, as well as differences in the prey size, are important adaptive features that may reduce the inter-specific competition in the fish community and permit the partitioning of food that allows coexistence.

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“…The Iberian barbel is a potamodromous cyprinid endemic to the Iberian Peninsula and occurs in a wide range of lotic and lentic habitats from almost all the river basins of northern and central Portugal (Lob on-Cervi a & Fern andez-Delgado 1984; Magalhães 1992). It is considered a nonthreatened species in the Iberian Peninsula (Doadrio 2001;Cabral et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Swimming performance and ecomorphology of the Iberian barbel Luciobarbus bocagei (Steindachner, 1864) on permanent and temporary rivers

Alexandre

Quintella

Ferreira

et al. 2013

Ecology of Freshwater Fish

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Spatial variability in streamflow characteristics is responsible for a large range of habitat variations to which fish are adapted through life-cycle strategies and morphological adaptations. In this study, we compared the swimming performance and related morphology of two Iberian barbel populations from permanent and temporary rivers. The permanent river was characterised by its Atlantic influence with higher water availability and a more unstable and turbulent environment, contrasting with the lower discharge setting observed in the southern Mediterranean ecosystem during most of the hydrological year. Barbels from the permanent river exhibited a higher critical swimming speed (U crit ) associated with a more fusiform body shape, narrower head and caudal peduncle, lower body condition and longer and higher pectoral and dorsal fins, when compared with the population from the temporary watercourse. These results reflect a morphological response in a way to reduce hydrodynamic resistance and energy expenditure during locomotion that we hypothesise here to be related with the different hydrological regimes of the studied systems.

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Feeding ecology of the Iberian cyprinid Barbus bocagei Steindachner, 1865 in a lowland river

Cited by 29 publications

References 13 publications

Regional and local environmental correlates of native Iberian fish fauna

Regional and local environmental correlates of native Iberian fish fauna

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Swimming performance and ecomorphology of the Iberian barbel Luciobarbus bocagei (Steindachner, 1864) on permanent and temporary rivers

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