Linked Data Explorerhttp://worldcat.org/entity/work/id/497193466
Comparison of eastern oyster (Crassostrea virginica) and blue mussel (Mytilus edulis) filtration rates at low temperatures
The eastern oyster, Crassostrea virginica, is highly tolerant of extremes in ambient temperatures. For suspension-feeding bivalves, low temperature decreases food intake by acting on the animals' physiological rates, and also by changing the water's physical properties, particularly viscosity. In this study, the researchers collected C. virginica in the Gulf of St. Lawrence (GSL) and estimated its filtration rate in cold waters. The blue mussel Mytilus edulis (L.) was used during the present study as a benchmark for comparison because it is ubiquitous in the GSL. The comparison of C. virginica and M. edulis may provide practical information for the management of shellfish closures in the GSL. Harmful algal blooms (HABs), consisting of the domoic-acid-producing diatom Pseudonitzschia multiseries, have historically occurred in autumn or spring, when water temperature is low.--Includes text from document.
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- http://experiment.worldcat.org/entity/work/data/497193466#Topic/moule_bleue_effets_du_froid_sur_la
- http://experiment.worldcat.org/entity/work/data/497193466#Topic/huitre_americaine_effets_du_froid_sur_la
- http://id.loc.gov/authorities/subjects/sh85089445
- http://id.loc.gov/authorities/subjects/sh85004375
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- "The eastern oyster, Crassostrea virginica, is highly tolerant of extremes in ambient temperatures. For suspension-feeding bivalves, low temperature decreases food intake by acting on the animals' physiological rates, and also by changing the water's physical properties, particularly viscosity. In this study, the researchers collected C. virginica in the Gulf of St. Lawrence (GSL) and estimated its filtration rate in cold waters. The blue mussel Mytilus edulis (L.) was used during the present study as a benchmark for comparison because it is ubiquitous in the GSL. The comparison of C. virginica and M. edulis may provide practical information for the management of shellfish closures in the GSL. Harmful algal blooms (HABs), consisting of the domoic-acid-producing diatom Pseudonitzschia multiseries, have historically occurred in autumn or spring, when water temperature is low.--Includes text from document."@en
- "Eastern oysters (Crassostrea virginica) and blue mussels (Mytilus edulis) were collected in the Gulf of St. Lawrence at the northernmost distribution area of C. virginica and maintained in cold water (0°C, 4°C or 9°C) over a 63-day period. Filtration rates were periodically determined in closed chambers initially inoculated with 10,000 phytoplankton cells mL⁻¹. For C. virginica, filtration at low temperatures was clearly an exception: the percentage of the experimental population clearing the phytoplankton cells from the closed chambers declined from peak values of 50% at 9°C to null values (no animals filtering) at 0°C. For M. edulis, the percentage ranged from 100% at 9°C to 17% at 0°C. With respect to absolute filtration rates, C. virginica cleared significantly fewer particles than did M. edulis. Moreover, unlike M. edulis, C. virginica showed no adaptation to cold during the 63-day experiment. Together these results suggest that C. virginica is disadvantaged in terms of grazing on seasonal phytoplankton blooms, including toxic (domoic acid) blooms, which have historically occurred at low temperatures (<9°C) in eastern Canadian waters. We caution, however, that further experiments are required to ascertain how changes in food quality or availability may influence feeding behaviour of C. virginica at low temperatures."
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- "Comparison of eastern oyster (Crassostrea virginica) and blue mussel (Mytilus edulis) filtration rates at low temperatures"
- "Comparison of eastern oyster (Crassostrea virginica) and blue mussel (Mytilus edulis) filtration rates at low temperatures"@en