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Diel variation in food intake and diet composition of three native fish species in floodplain lagoons of the Macintyre River, Australia

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The feeding periodicity of three species of fishes in floodplain lagoons of the Macintyre River varied during 24 h cycles, however, peak feeding activity (around midday and late afternoon) was similar among the species studied, despite differences in their trophic position. In contrast, sampling season and site seemed to have a stronger effect on the composition of the diet than time of day. These findings have implications for studies of trophic dynamics and food web structure in floodplain lagoons.

Keywords: diel feeding activity; dryland river; fishes; trophic ecology

Document Type: Research Article


Affiliations: Australian Rivers Institute and eWater CRC, Griffith School of Environment, Griffith University, Nathan QLD 4111, Australia

Publication date: September 1, 2008


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