Particle clearance and selection in three species of juvenile scallops |
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| Authors: | S E Shumway T L Cucci M P Lesser N Bourne B Bunting |
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| Institution: | (1) Bigelow Laboratory for Ocean Sciences, West Boothbay Harbor, 04575, ME, USA;(2) Fisheries and Oceans, Pacific Biological Station, V9R 5K6 Nanaimo, British Columbia, Canada;(3) Island Scallops Ltd, 5552 West Island Highway, R.R. 3, Site 327, C-1, V0R 2T0 Qualicum Beach, British Columbia, Canada;(4) Present address: Natural Science Division, Southampton College, LIU, 11968 Southampton, NY, USA;(5) Present address: Zoology Department, Spaulding Life Sciences Center, University of New Hampshire, 03824-3544 Durham, NH, USA |
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| Abstract: | Juvenile scallops (<2 mm shell height) of three species (Placopecten magellanicus, Patinopecten yessoensis, Argopecten irradians) were fed mixed, unialgal cultures. Scallops were fed a total of six algal clones simultaneously and clearance rates were
monitored using flow cytometric techniques. In another experiment, scallops were presented with natural assemblages of particulate
matter as a food source. Data are presented on differences in clearance rates for the individual algal species as well as
size-related differences of algal clones, and uptake of chlorophyll vs. non-chlorophyll cells, both within and between scallop
species. Significant differences in clearance rates of individual algal species have been found within and between scallop
species. Particle selection does not appear to be based upon size alone and is apparently based on other characteristics of
the algae as well. The results demonstrate pre-ingestive sorting. |
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| Keywords: | Feeding Scallops (Placopecten Patinopecten Argopecten) Selection |
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