Fig 1.
Distribution of brown bear testosterone levels between fortnights 5 and 13.
The curve shows the distribution of the testosterone levels among the whole bear population (n = 122) and the open points shows data of bears included in the present study (mean ± S.E.M., n = 41). The values below represent the number of bears with high or low testosterone levels included in this study for that fortnight.
Fig 2.
All the gels were overlaid for comparison. Those spots with a repeatability greater than 40% and a presence higher than 2 were considered in the computer-assisted assessment.
Table 1.
Biochemical evaluation of bear seminal plasma (concentration, mean ± S.E.M.) classified according to the high or low levels of serum testosterone.
Table 2.
Spots from 2D electrophoresis of bear seminal plasma gels equivalent to those from bull gels [37] according to molecular weight and isoelectric point.
Table 3.
Automatic quantitative analysis.
Means volume percentages for the spots from males with high and low levels of testosterone.