caa a22 4500 445894776 CHVBK 20180317145628.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10750-010-0533-z doi (NATIONALLICENCE)springer-10.1007/s10750-010-0533-z Differences in growth and survivorship of zebra and quagga mussels: size matters [Elektronische Daten] [Alexander Karatayev, Sergey Mastitsky, Dianna Padilla, Lyubov Burlakova, Marissa Hajduk] The zebra mussel (Dreissena polymorpha) and its congener the quagga mussel (Dreissena rostriformis bugensis) are both invaders in freshwater, but have very different invasion histories, with zebra mussels attaining substantially faster rates of spread at virtually all spatial scales. However, in waterbodies where they co-occur, D. r. bugensis can displace D. polymorpha. To determine if the mechanisms for this displacement are associated with different survival and growth, we kept mussels in flow-through tanks for 289days with two temperature regimes that mimicked the natural surface water (littoral zone) and hypolimnion conditions of Lake Erie. For the littoral zone regime, we used water directly from the surface of Lake Erie (range 4-25°C, average 11.9±0.6°C). For the profundal zone treatment, Lake Erie surface water was chilled to about 6°C (range 5-8°C, average 6.2±0.6°C) for the full duration of the experiment. For each of these temperature regimes, we used three replicate tanks with only zebra mussels present and three replicate tanks with only quagga mussels (150ind./tank each), and three replicate tanks with both species (75ind./tank of each species). Quagga mussels had higher survivorship and grew more than zebra mussels in all treatments. For both species, the size of the mussel entering the winter was critical for survivorship. Larger mussels had a higher survival over the winter in all treatments. For both species, there was a survivorship and growth tradeoff. In the warmer littoral zone treatment both species had higher growth, but lower survival than in the colder profundal zone treatment. Surprisingly, although quagga mussels outperformed zebra mussels, zebra mussel survivorship was better when they were faced with competition by quagga mussels than with just intraspecific competition. In addition, quagga mussels suffered size-specific mortality during the growing season only when facing interspecific competition with zebra mussels. Further experiments are needed to determine the possible mechanisms for these interspecific effects. Springer Science+Business Media B.V., 2010 Dreissena polymorpha nationallicence Dreissena rostriformis bugensis nationallicence Growth nationallicence Survivorship nationallicence Competition nationallicence Exotic species nationallicence Great Lakes nationallicence Karatayev Alexander Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut Mastitsky Sergey Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut Padilla Dianna Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA aut Burlakova Lyubov Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut Hajduk Marissa Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut Hydrobiologia Springer Netherlands 668/1(2011-06-01), 183-194 0018-8158 668:1<183 2011 668 10750 https://doi.org/10.1007/s10750-010-0533-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0533-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Karatayev Alexander Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut NATIONALLICENCE 700 1- Mastitsky Sergey Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut NATIONALLICENCE 700 1- Padilla Dianna Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY, USA aut NATIONALLICENCE 700 1- Burlakova Lyubov Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut NATIONALLICENCE 700 1- Hajduk Marissa Great Lakes Center, Buffalo State College, 1300 Elmwood Avenue, 14222, Buffalo, NY, USA aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 668/1(2011-06-01), 183-194 0018-8158 668:1<183 2011 668 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer