Reduction in post-invasion genetic diversity in Crangonyx pseudogracilis (Amphipoda: Crustacea): a genetic bottleneck or the work of hitchhiking vertically transmitted microparasites? - Slothouber Galbreath, J. G. M., Smith, J. E., Becnel, J. J., Butlin, R. K. & Dunn, A. M. (Biological Invasions, 2010)