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Effects of phytoplankton taste and smell on feeding behavior of the copepod Centropages hamatus

1986; Inter-Research; Volume: 34; Linguagem: Inglês

10.3354/meps034187

1616-1599

Kathryn L. Van Alstyne,

Isotope Analysis in Ecology

Adult copepods Centropages harnatus were induced to feed on 10 to 40 pm Sephadex beads by adding Thalassiosira weissflogii or ScrippsieUa trochoidea wholecell extract, or filtrate from a T. weissflogii culture, to a bead suspension.Beads were neither ingested in the absence of a chemical stimulus, nor in the presence of filtrates from cultures of S. trochoidea and Olisthodiscus luteus, or 0. luteus extracts.Extracts from both S. trochoidea and 0. luteus, and filtrate from an 0. luteus culture, appear to exert an inhibitory effect when applied in combination with T. weissflogii extract.Copepods acclimated to T. weissflogii for 24 h did not significantly increase their feeding rate on T. weissflogiiflavored beads and did not ingest S.