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Settlement Of Oyster (Crassostrea-Virginica) Larvae - Effects Of Water-Flow And A Water-Soluble Chemical Cue
Turner, EJ Zimmerfaust, RK Palmer, MA Luckenbach, M Pentcheff, ND
Turner, EJ
Zimmerfaust, RK
Palmer, MA
Luckenbach, M
Pentcheff, ND
Abstract
Although previous evidence indicates that larvae of benthic marine invertebrates can respond to waterborne cues in still water, the importance of waterborne cues in mediating natural settlement out of flowing water has been questioned. Here, we summarize the results of flume experiments demonstrating enhanced settlement of oyster larvae in small target wells (circles of 7-cm diam) with the release of a waterborne settlement cue compared to identical substrates without the cue. In concurrent still-water experiments, more oyster larvae settled in solutions of waterborne cue than in seawater controls. Velocity and electrochemical measurements of a conservative tracer verified that at low flow velocities (2 and 6 cm s(-1)) with U* values
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1994-11-01
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lo.1994.TURNER_LUCK.pdf
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Virginia Institute of Marine Science
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https://doi.org/10.4319/lo.1994.39.7.1579