caa a22 4500 469095725 CHVBK 20180323133030.0 cr unu---uuuuu 170328e19921001xx s 000 0 eng 10.1007/BF00317259 doi (NATIONALLICENCE)springer-10.1007/BF00317259 Filtering impacts of larval and sessile zebra mussels ( Dreissena polymorpha ) in western Lake Erie [Elektronische Daten] [Hugh MacIsaac, Gary Sprules, Ora Johannson, J. Leach] Summary: We assessed the feeding biology of veliger larvae of the introduced zebra mussel (Dreissena polymorpha Pallas) in laboratory experiments using inert microspheres as food analogues. Mean clearance rate on 2.87-μm beads ranged between 247 and 420 μL veliger−1 day−1. Clearance rate was unrelated to bead concentration up to 100 beads μL−1, but was positively correlated with veliger shell length. Clearance rates of Dreissena veligers are within the range of those reported for marine bivalve veligers of similar size and for herbivorous Great Lakes microzooplankton, but are orders of magnitude lower than those of settled, conspecific adults. The impact of settled zebra mussel grazing activities on phytoplankton stocks may be up to 1162 times greater than that exerted by veliger populations in western Lake Erie. Based on 1990 size-frequency distributions and associated literature-derived clearance rates, reef-associated Dreissena populations in western Lake Erie (mean depth ∼7 m) possess a tremendous potential to filter the water column (up to 132 m3 m−2 day−1) and redirect energy from pelagic to benthic foodwebs. Preliminary analyses indicate that chlorophyll a concentration is strongly depleted (<1 μg L−1) above Dreissena beds in western Lake Erie. Springer-Verlag, 1992 Dreissena nationallicence Lake Erie nationallicence Ecological impact nationallicence Clearance rate nationallicence Biological invasion nationallicence MacIsaac Hugh Department of Zoology, University of Toronto, Erindale College, L5L 1C6, Mississauga, Ontario, Canada aut Sprules Gary Department of Zoology, University of Toronto, Erindale College, L5L 1C6, Mississauga, Ontario, Canada aut Johannson Ora Department of Fisheries and Oceans, Great Lakes Laboratory for Fisheries and Aquatic Sciences, L7R 4A6, Burlington, Ontario, Canada aut Leach J. Ontario Ministry of Natural Resources, Lake Erie Fisheries Station, R.R. #2, N0P 2P0, Wheatley, Ontario, Canada aut Oecologia Springer-Verlag 92/1(1992-10-01), 30-39 0029-8549 92:1<30 1992 92 442 https://doi.org/10.1007/BF00317259 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00317259 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- MacIsaac Hugh Department of Zoology, University of Toronto, Erindale College, L5L 1C6, Mississauga, Ontario, Canada aut NATIONALLICENCE 700 1- Sprules Gary Department of Zoology, University of Toronto, Erindale College, L5L 1C6, Mississauga, Ontario, Canada aut NATIONALLICENCE 700 1- Johannson Ora Department of Fisheries and Oceans, Great Lakes Laboratory for Fisheries and Aquatic Sciences, L7R 4A6, Burlington, Ontario, Canada aut NATIONALLICENCE 700 1- Leach J. Ontario Ministry of Natural Resources, Lake Erie Fisheries Station, R.R. #2, N0P 2P0, Wheatley, Ontario, Canada aut NATIONALLICENCE 773 0- Oecologia Springer-Verlag 92/1(1992-10-01), 30-39 0029-8549 92:1<30 1992 92 442 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer