Related Experiment Video
Updated: May 11, 2026

Sperm Collection and Computer-Assisted Sperm Analysis in the Teleost Model Japanese Medaka (Oryzias latipes)
Published on: October 6, 2022
Ovarian fluid influences sperm performance in lake trout, Salvelinus namaycush
Patrick M Galvano1, Katelynn Johnson, Chris C Wilson
1Department of Biological Sciences, University of Windsor, 401 Sunset Ave., Windsor, Ontario N9B 3P4, Canada.
Abstract:
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.
Related Concept Videos
Osmoregulation in Fishes
Spermatogenesis

