|Impedance traces of copepod appendage movements illustrating sensory feeding behaviour|Gill, C.W.; Poulet, S.A. (1988). Impedance traces of copepod appendage movements illustrating sensory feeding behaviour, in: Boxshall, G.A. et al. (Ed.) Biology of copepods: Proceedings of the Third International Conference on Copepoda. Developments in Hydrobiology, 47: pp. 303-310. hdl.handle.net/10.1007/978-94-009-3103-9_30
In: Boxshall, G.A.; Schminke, H.K. (Ed.) (1988). Biology of copepods: Proceedings of the Third International Conference on Copepoda. Developments in Hydrobiology, 47. Kluwer Academic Publishers: Dordrecht. ISBN 90-6193-654-3. XII, 639 pp., more
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, more
Feeding; Copepoda [WoRMS]; Marine
Copepod; Sensory behaviour
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An experimental system incorporating a computerized micro-impedance unit has been used to make direct measurements of the activity of copepod cephalic appendages. As the appendages are used to both propel the copepod through water and handle particles, it follows that appendage activity reflects feeding behaviour.
To investigate the sensory feeding behaviour of copepods, their activity was recorded with food stimuli varying in size and chemical composition. Sample impedance traces arc given for the appendage movements of Temora longicornis in the presence of: 1 - filtered seawater; 2 - beads; 3 - phytoplankton cells; 4 - dissolved free amino acids. The normal appendage movements shown in filtered seawater were modified when copepods were offered particles and dissolved chemicals. Results show that chemical and mechanical stimuli are responsible for the recognition and selection of food. Impedance traces distinguish between behavioural responses such as: antennule flicks, leg kicks, combing, handling and rejection of particles. Spectral analyses of traces have demonstrated that differences in beat pattern are significant.