A Seasonal Comparison of Suspended Sediment Filtration by Quagga (Dreissena bugensis) and Zebra (D. polymorpha) Mussels |
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| Affiliation: | 1. Great Lakes Center, SUNY Buffalo State, 1300 Elmwood Avenue, Buffalo, NY 14222, USA;2. NOAA Great Lakes Environmental Research Laboratory, Lake Michigan Field Station, 1431 Beach St., Muskegon, MI 49441, USA;3. Cornell University, Department of Natural Resources and Cornell University Biological Field Station, 900 Shackelton Point Road, Bridgeport, NY 13030, USA;4. ORISE (Oak Ridge Institute for Science and Education), 100 ORAU Way, Oak Ridge, TN 37830, USA;1. Nicolaus Copernicus University, Faculty of Biological and Veterinary Sciences, Toruń, Poland;2. MTA Centre for Ecological Research, GINOP Sustainable Ecosystems Group, Centre for Ecological Research, Tihany, Hungary;3. Eötvös Lóránd Research Network, Centre for Ecological Research, Balaton Limnological Institute, Tihany, Hungary;1. Université de Reims Champagne-Ardenne, UMR-INERIS 02 SEBIO (Stress Environnementaux et Biosurveillance des Milieux Aquatiques), Reims, France;2. INRS, Institut Armand Frappier, 531 Boulevard des Prairies, Laval, Québec, H7V 1B7, Canada;3. Institut Universitaire Européen de la Mer, Laboratoire LEMAR, Plouzané, France;4. Centre d''expertise en Analyse Environnementale du Québec, Ministère du Développement Durable, de l’Environnement et de la Lutte Contre les Changements Climatiques, 2700, Rue Einstein, Québec City, Québec, G1P 3W8, Canada;5. Centre d''expertise en Analyse Environnementale du Québec, Ministère du Développement Durable, de l’Environnement et de la Lutte Contre les Changements Climatiques, 850, Boulevard Vanier, Laval, QC, H7C 2M7, Canada |
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| Abstract: | Field evidence suggests a shift in the dreissenid population from zebra (Dreissena polymorpha) to quagga (D. bugensis) mussels is occurring within the lower Great Lakes. This laboratory study directly compared per-mussel and per-dry-weight filtration rates (volume per time) of both species, gauged by the clearance of resuspended natural sediments (1 to 12 mg/L) from gently mixed, 1-L static vessels. Mussels of 15- and 20-mm lengths were collected together from the Lake Ontario drainage basin at Oak Orchard Creek, Medina, NY, and maintained and tested in ambient Niagara River water. A 2 × 4 factorial design was employed, with species and season as independent factors. Season significantly influenced filtration rate of both size classes, and winter rates were about half those measured during the rest of the year. Species significantly influenced filtration of 20-mm mussels. Quagga mussels of this size filtered up to 37% faster than zebra mussels (data for spring: 309 vs. 226 mL/h/mussel, n = 18 and 20 individuals, respectively). Species was not a significant factor alone for 15-mm mussels, but a species x season interaction was significant. The zebra mussels employed here had 16 to 22% more ash-free dry weight (AFDW) than the quagga mussels, accentuating filtration differences when expressed per-mg-AFDW. |
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