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Feeding of marine planktonic copepods on mixed phytoplankton

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Abstract

The feeding of juveniles and adults of the copepods Eucalanus pileatus, Temora stylifera and T. turbinata fed a mixture of the phytoplankton Skeletonema costatum, Leptocylindrus danicus and Rhizosolenia alata f. indica was studied at 20°C. E. pileatus nauplii, copepodids and adult females ingest similar percentages of the 3 algae in terms of carbon. Temora juveniles younger than CII ingest mainly S. costatum; at more advanced developmental stages, the ingestion rate on S. costatum remains constant whereas feeding on L. danicus and R. alata f. indica increases with increasing body weight. Feeding on high concentrations of large particles reduces the grazing pressure on small particles, thus favoring zooplankton which require small-sized food.

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Authors and Affiliations

  1. Skidaway Institute of Oceanography, Savannah, Georgia, USA

    G. -A. Paffenhöfer & S. C. Knowles

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  1. G. -A. Paffenhöfer
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  2. S. C. Knowles
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Communicated by J.M. Lawrence, Tampa

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Paffenhöfer, G.A., Knowles, S.C. Feeding of marine planktonic copepods on mixed phytoplankton. Mar. Biol. 48, 143–152 (1978). https://doi.org/10.1007/BF00395014

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  • DOI: https://doi.org/10.1007/BF00395014

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