<%@LANGUAGE="JAVASCRIPT" CODEPAGE="1252"%> 2005Design1
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FEEDING ON ALGAL CHAINS The animal, Eucalanus crassus, was tethered with a dog hair. Algae, Lauderia borealis, which forms chains, were in the water at natural densities
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The flow is generated by the movement of the mouth parts. The inner mouth parts remain motionless until a chain is close-by. Then a fast movement is executed to capture the algal chain. The chain is positioned and the animal starts to feed on one cell at the time
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This clip is from a high-speed movie made in 1978 by Miquel Alcaraz, Gus Paffenhofer, and Rudi Strickler in Strickler's laboratory. The clip was transferred to digital video and condensed into a FLASH file. The clip is 37.5 seconds long at 30 frames per second, but was originally made at 500 frames per second. Therefore, the real scene is only 2 1/4 seconds in duration
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Paffenhofer, G.-A., J.R. Strickler and M. Alcaraz. 1982. Suspension-feeding by herbivorous calanoid copepods: a cinematographic study. Mar. Biol. 67, 193-199
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© STRICKLER, UWM 2005 back to Strickler Central