Effects of hypoxia and low-frequency agitation byssogenesis in the freshwater mussel Dreissena polymorpha (Pallas).

From: The Biological Bulletin | Date: December 1, 1996| Author: | Copyright information

The effect of variations in [Po.sub.2] and agitation rate on byssogenesis, motility, and survival of the zebra mussel (Driessena polymorpha) was investigated. Mussels exposed to a [Po.sub.2] [less than or equal to]15.4 torr exhibited increased mortality, reduced motility, and significant suppression of byssogenesis. At 7.7 and 15.4 torr, mean survival times were 5.2 and 5.8 days, maximum survival times being 15 and 16 days, respectively. After 21 days at a [Po.sub.2] of 23.1 torr, sample mortality was 33.3% and declined to 18.2% at 30.9 torr. There was no mortality at full air [O.sub.2] ...

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