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Echinoderm Immunology: Bacterial clearance by the sea urchin, Strongylocentrotus purpuratus

Yui, Mary A. and Bayne, Christopher J. (1983) Echinoderm Immunology: Bacterial clearance by the sea urchin, Strongylocentrotus purpuratus. Biological Bulletin, 165 (2). pp. 473-486. ISSN 0006-3185.

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Characteristics of bacterial clearance were investigated in the purple sea urchin, Strongylocentrotus purpuratus (Echinodermata: Echinoidea). Primary clearance kinetics were determined for three bacteria, a marine Gram negative motile rod, a marine Gram positive non-motile rod, and a Gram negative freshwater fish pathogen, Aeromonas salmonicida. Clearance kinetics differed for each of the three bacteria. Secondary clearance rates were not significantly different from primary clearance rates for any of the three bacteria, regardless of the time interval between inoculations (9-21 days), implying a probable absence of immunologic memory. During primary clearance, total coelomocyte counts declined 93% by 90 min post injection. All four coelomocyte types declined, however the relative proportions of each type changed during the six-hour sampling period. In cell-free coelomic fluid, viable counts of marine bacteria declined, with different kinetics for the two species. Viable counts in sea water controls did not change. Declines in viable counts may be due to bactericidal activity and/or agglutination, although bacterial agglutination was not observed.

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Yui, Mary A.0000-0002-3136-2181
Additional Information:© 1983 University of Chicago. Received 11 April 1983; accepted 25 July 1983. We thank E. S. Loker and C. A. Boswell for suggestions on the manuscript, and J. A. Longmate for assistance collecting urchins. The research was supported by grants from the Oregon State University Zoology Department Research Fund.
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Oregon State UniversityUNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20170303-163721060
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Official Citation:MARY A. YUI and CHRISTOPHER J. BAYNE, "ECHINODERM IMMUNOLOGY: BACTERIAL CLEARANCE BY THE SEA URCHIN STRONGYLOCENTROTUS PURPURATUS," The Biological Bulletin 165, no. 2 (October 1983): 473-486. DOI: 10.2307/1541213
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:74747
Deposited By: Donna Wrublewski
Deposited On:18 Mar 2017 03:58
Last Modified:03 Oct 2019 16:42

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