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Diel and spatial drifting patterns of silver perch Bidyanus bidyanus eggs in an Australian lowland river

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Densities of silver perch Bidyanus bidyanus eggs drifting in the Murray River, Australia, suggested a peak spawning time between 2100 and 0100 hours, and a propensity to drift in higher densities near shore and at the bottom of the water column. The results highlight the need to consider such spatial and temporal patterns when estimating species-specific drift abundances.
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Keywords: Terapontidae; behaviour; dispersal; distribution; drift; spawning

Document Type: Research Article

Affiliations: Freshwater Ecology, Arthur Rylah Institute for Environmental Research, Department of Sustainability and Environment, P. O. Box 137, Heidelberg, Victoria 3084, Australia

Publication date: 01 January 2007

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