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Effect of decreasing oxygen tension of swimming rate of Crassostrea virginica (Gmelin, 1791) larvae
Mann, Roger L. Rainer, Julia S.
Mann, Roger L.
Rainer, Julia S.
Abstract
Four sizes of Crassostrea virginica Gmelin larvae (mean lengths 76.8, 118.1, 139.7 and 290.2 [Lm) were exposed to ·stepwise decreases in oxygen concentration from I 00% saturation (5 .38 mill at 22°C and 22 ppt salinity) to as low as 10% saturation and their swimming rates (net vertical movement per unit time) were recorded at each oxygen concentration. No cessation of swimming was observed and in only two conditions, that of 76.8 [Lm larvae at 10% saturation and 290.2 j.Lm larvae at 21% saturation, was swimming rate significantly lower than that of the same size larvae at full saturation.
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1990
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1614.pdf
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Fisheries Science Peer-Reviewed Articles, swimming, Crassostrea virginica, larvae, oyster, oxygen
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Virginia Institute of Marine Science