Do parasites lower Daphnia hybrid fitness?

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Wolinska, J., Keller, B., Bittner, K., Lass, S., & Spaak, P. (2004). Do parasites lower Daphnia hybrid fitness? Limnology and Oceanography, 49(4), 1401-1407. https://doi.org/10.4319/lo.2004.49.4_part_2.1401