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Marine Ecology Progress Series

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MEPS 331:305-307 (2007)  -  doi:10.3354/meps331305

Reassessment of the gut pigment method for estimating in situ zooplankton ingestion

Edward G. Durbin*, Robert G. Campbell

Graduate School of Oceanography, University of Rhode Island, South Ferry Rd, Narragansett, Rhode Island 02882, USA

ABSTRACT: Correction for chlorophyll pigment destruction has been frequently used in calculation of copepod ingestion rates using the gut pigment method. We argue that tracers in the gut may be either digested and assimilated, or evacuated, and that both processes are taken into account when an evacuation (disappearance) rate curve is determined. As a result, any correction for gut pigment destruction in calculating ingestion rate is inappropriate.

KEY WORDS: Ingestion · Gut pigments · Zooplankton

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