The food and feeding relationships of larval and 0+ year juvenile fishes in lowland rivers and connected waterbodies. I. Ontogenetic shifts and interspecific diet similarity

By A. D. Nunn, J. Harvey, I. Cowx. 2007

83 citations recorded by the source corpus.

Many fish species are zooplanktivorous at the onset of exogenous feeding, but distinct shifts in their foraging biology may occur with development. This study investigated the food and feeding relationships of the larvae and 0+ year juveniles of 13 fish species in 'main river'. 'marina' and 'pond' macrohabitats in the lower River Trent. England. Young larvae had narrow diet spectra, with feeding diversity and the importance of species-specific traits increasing with development. Two main ontogenetic shifts in diet were differentiated, corresponding with the transition from finfold to finformed larvae, and from the larval to the juvenile period. Dietary overlap was generally greatest among ecologically similar species, with competition and resource partitioning most likely where prey availability was lowest. The greater availability of zooplankton in connected waterbodies compared with main river channels provides suitable prey for a wide range of fish species, and may enhance recruitment success. (c) 2007 The Authors. Journal compilation (c) 2007 The Fisheries Society of the British Isles.

Subfields: Aquatic Science, Nature and Landscape Conservation

View Paper: https://www.semanticscholar.org/paper/1be134b82800fa66c30ea441f4507996d47d36a3

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In Aquatic Science

In Nature and Landscape Conservation

Citations in the corpus

Comparing fish assemblages and trophic ecology of permanent and intermittent reaches in a Mediterranean stream (2010, background): “The combination of the small size and the lower density of invertebrates likely indicate resource limitation for predators (Zaret & Rand, 1971; Oliva-Paterna et al., 2003; Nunn et al., 2007).”