June 2013 (No. 2)
Ovarian fluid influences sperm performance in lake trout, Salvelinus namaycush
Patrick M. Galvano a, Katelynn Johnson a, Chris C. Wilson b, Trevor E. Pitcher a, Ian A.E. Butts a,*
a Department of Biological Sciences, University of Windsor, 401 Sunset Ave., Windsor, Ontario, Canada;
b Aquatic Research and Development Section, Ontario Ministry of Natural Resources, Trent University, Peterborough, Ontario, Canada
The objectives of this study were to determine whether (i) the presence and concentration of ovarian fluid (OF) affects sperm performance traits, and (ii) variation in sperm performance traits is due to male identity, female identity, and/or male×female interactions in lake trout, Salvelinus namaycush. Spermatozoa from four males were activated in river water and OF from four females at two concentrations (10 and 15%). Presence of ovarian fluid influenced sperm traits; no differences were detected between 10 and 15% OF. Sperm traits varied depending on parental identity, such that sperm of some males perform better in the OF of all females and that in OF of some females sperm traits are higher for all males.
Reproductive Biology 2013 13 2: 172–175.
* Corresponding author, present address: DTU AQUA, National Institute for Aquatic Resources, Section for Marine Ecology, Technical University of Denmark, Charlottenlund Slot, Jægersborg Allé 1, 2920 Charlottenlund, Denmark; e-mail addresses: firstname.lastname@example.org, email@example.com