Citation PDF (171 K) PDF-Plus (172 K) Corrected article Donal A. Hickey,a G. Brian Goldingb aDepartment of Biology, Concordia University, 7141 Sherbrooke West, Montreal, QC H4B 1R6, Canada. bDepartment of Biology, McMaster University, 1280 Main St. West, Hamilton, ON L8S 4K1, Canada. Corresponding author: Donal A. Hickey (email: donal.hickey@concordia.ca). Copyright remains with the author(s) or their institution(s). Permission for reuse (free in most cases) can be obtained from RightsLink.