Table 1:
Mean, standard error and sample size for all measures, as well as average body mass at the end of the experiment, for each treatment group
| Group | Circulating CORT, day −5 (pg/ml) | Circulating CORT, day 7 (pg/ml) | Sperm count (millions) | Sperm viability (% viable) | Average mass at end of experiment (g) |
|---|---|---|---|---|---|
| Control 1 (pre-control) | 1668.6 ± 591.5 (n = 4) | 2155.7 ± 659.0 (n = 9) | 5.4 ± 1.3 (n = 10) | 82.3 ± 1.0 (n = 5) | 31.5 |
| Control 2 (post-control) | 1009.3 ± 347.6 (n = 7) | 2060.5 ± 306.3 (n = 9) | 5.7 ± 0.79 (n = 9) | 86.9 ± 1.5 (n = 9) | 28.2 |
| Combined controls | 1249.0 ± 307.2 (n = 11) | 2108.1 ± 352.7 (n = 18) | 5.5 ± 0.77 (n = 19) | 85.2 ± 1.3 (n = 14) | 29.9 |
| Traffic noise | 971.7 ± 167.4 (n = 8) | 4100.8 ± 898.2 (n = 10) | 2.4 ± 0.70 (n = 10) | 63.7 ± 7.9 (n = 9) | 35.1 |
Raw data are presented for ease of interpretation, and data are presented separately for each of the three groups. For analyses and for Figs 1 and 2, the two control groups were pooled because there were no statistically significant differences between them; these pooled values are also shown. Note that data were logarithmically transformed for analyses, and the figures depict back-transformed data corrected for body mass (see main text for explanation). Abbreviation: CORT, corticosterone.