Time-Dependent Absorption in Deposit Feeders

  • Lars Kofoed
  • Valery Forbes
  • Glenn Lopez
Conference paper

DOI: 10.1007/978-1-4684-7671-2_6

Part of the Lecture Notes on Coastal and Estuarine Studies book series (COASTAL, volume 31)
Cite this paper as:
Kofoed L., Forbes V., Lopez G. (1989) Time-Dependent Absorption in Deposit Feeders. In: Lopez G., Taghon G., Levinton J. (eds) Ecology of Marine Deposit Feeders. Lecture Notes on Coastal and Estuarine Studies, vol 31. Springer, New York, NY

Abstract

Deposit feeders obtain food from sediments consisting mostly of indigestible mineral grains. In order to procure the required energy and nutrients, these animals must process enormous quantities of sediment (Canunen 1980b). The necessarily rapid processing rates limit the amount of time material may remain in the gut. Many deposit feeders have gut residence times of 30 minutes or less. Juvenile Streblospio benedirti can have gut residence times as low as 4 minutes (T. Forbes, pers. com.). Since digestion is a time-dependent process, gut residence time is likely to control absorption of ingested food, particularly when the food is difficult to digest. While the amount of material absorbed will increase with increasing gut residence time, it is likely to do so at a reducing rate (Sibly and Calow 1986). Therefore there will be a tradeoff between the efficiency and speed of digestion.

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Copyright information

© Springer-Verlag New York, Inc. 1989

Authors and Affiliations

  • Lars Kofoed
    • 1
  • Valery Forbes
    • 1
  • Glenn Lopez
    • 2
  1. 1.Biology InstituteOdense UniversityOdense MDenmark
  2. 2.Marine Sciences Research CenterState University of New YorkStony BrookUSA

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