Abstract
Sperm motility, density, adenosine triphosphate (ATP) concentration, and fertilization rates of sex-reversed female (XX-male) rainbow trout (Oncorhynchus mykiss) were compared to those of normal (XY-male) males. The relationships between sperm traits, fertilization rates, and characteristics of individual fish (weight, gonadosomatic index) were assessed. The fertilization rate of sperm stripped from normal males averaged 81% (s.d. 16%). The sperm of sex-reversed females had to be removed directly from the testes and achieved average fertilization rates of 60% (s.d. 13%). Testicular sperm from normal males was motile for shorter periods of time and produced lower fertilization rates than testicular sperm from sex-reversed fish. Fertilization rates were positively correlated with higher initial sperm motility, but not with sperm density or ATP concentrations.
| Original language | English |
|---|---|
| Pages (from-to) | 61-72 |
| Number of pages | 12 |
| Journal | Aquaculture |
| Volume | 182 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Feb 2000 |
| Externally published | Yes |