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American Zoologist 1982 22(3):671-682; doi:10.1093/icb/22.3.671
© 1982 by The Society for Integrative and Comparative Biology
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Uptake of DOM by Nemertean Worms: Association of Worms with Arthrodial Membranes1

JOHN H. CROWE, LOIS M. CROWE, PAMELA ROE and DANIEL WICKHAM
Department of Zoology, University of California Davis, Davis, California 95616, Bodega Marine Laboratory Bodega Bay, California 94923 and Friday Harbor Laboratories Plymouth, Devon, PL1 2PB, United Kingdom
Department of Biology, University of California Davis, Davis, California 95616, Bodega Marine Laboratory Bodega Bay, California 94923 and Friday Harbor Laboratories Plymouth, Devon, PL1 2PB, United Kingdom
Bodega Marine Laboratory Bodega Bay, California 94923

SYNOPSIS. Carcinonemertes errans is a nemertean worm, the juveniles of which are found as epibionts on the Dungeness crab, Cancer magister, in close association with the arthrodial membranes of the crabs. The juvenile nemerteans appear to have no means of taking in particulate food but survive for many months on the surface of the host. We show that the juvenile C. errans are capable of removing amino acids from dilute solution in sea water, that the water near the arthrodial membranes where the worms are found contains high concentrations of primary amines, and that there is a low resistance pathway for low molecular weight amino acids across the arthrodial membrane examined in vitro.


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