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Effects of turbulence exposure on zebra mussel (Dreissena polymorpha) larval survival

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Abstract

To more accurately predict recruitment of zebra mussels (Dreissena polymorpha) in waterbodies downstream of a source population, factors that control the successful transport of zebra mussel larvae need to be quantified. Turbulence has been identified in previous studies as a likely factor in larval morality in rivers and streams where turbulent energy dissipation can be orders of magnitude greater than in lakes. To investigate the impact of turbulent energy dissipation on zebra mussel larval mortality, we conducted a series of experiments using lake water collected from Lake Minnetonka, Minnesota containing veligers in a jar test device. Results indicate that zebra mussel larval mortality is a function of veliger size, turbulent energy dissipation, and exposure time. The mortality at 24 h of turbulence exposure was fit to a function of d*, the ratio of shell size to Kolmogorov length scale, to develop a dose–response curve. Mortality rate constants were estimated by fitting mortality data from specified turbulence regimes to a first-order model. The mortality rates ranged from 0.09 to 1.71 day−1 and were correlated to energy dissipation.

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Acknowledgements

Funding was provided under cooperative agreement number W012HZ-14-2-002 through the Great Lakes Northern Forest Cooperative Ecosystems Studies Unit (CESU). The authors acknowledge the assistance of Mike McCartney, Dan Kelner, Aaron McFarlane, and Byron Karns in locating appropriate veliger collection sites and of Kathy Wabner for facilitating the use of the jar test device. Veliger collection was conducted under Prohibited Invasive Species Permit number 323 issued by the Minnesota Department of Natural Resources.

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Correspondence to J. L. Kozarek.

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Kozarek, J.L., Hondzo, M., Kjelland, M.E. et al. Effects of turbulence exposure on zebra mussel (Dreissena polymorpha) larval survival. Aquat Sci 80, 12 (2018). https://doi.org/10.1007/s00027-017-0563-y

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  • DOI: https://doi.org/10.1007/s00027-017-0563-y

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