Table 3  Single QTL mapping
PhenotypeChromosomePosition (cM)LOD scoreaPosition (Mb)1.5-LOD interval (Mb)DDbDMbMMb
Relative right testis weight2305.4196.052.2–123.93.64 ± 0.134.40 ± 0.094.43 ± 0.14
445.98.66108.998.8–115.34.68 ± 0.124.28 ± 0.083.49 ± 0.14
10206.3669.355.1–87.43.81 ± 0.124.20 ± 0.094.80 ± 0.13
Sperm densityX03.2810.210.2–45.113.82 ± 0.6210.81 ± 0.58
Sperm density (binary)1713.36.0030.03.1–65.20.85 ± 0.040.77 ± 0.031.00 ± 0.05
Sperm head PC1cX1850.9568.958.3–71.30.061 ± 0.004−0.056 ± 0.004
Seminiferous tubule aread18344.3669.660.3–80.02681.17 ± 880.56−859.17 ± 486.73−610.82 ± 638.18
Proximal bent taile10104.2047.632.6–84.30.24 ± 0.020.18 ± 0.010.15 ± 0.02
X24.58.7790.858.3–97.40.14 ± 0.010.23 ± 0.01
Distal bent taile3224.3451.430.0–75.90.18 ± 0.010.13 ± 0.010.12 ± 0.01
5707.20146.4133.0–148.40.20 ± 0.010.13 ± 0.010.12 ± 0.01
X167.2367.852.5–96.40.11 ± 0.010.17 ± 0.01
Headless/taillesse1503.6716.516.5–48.20.33 ± 0.020.34 ± 0.010.41 ± 0.02
X23.2018.710.2–96.40.32 ± 0.010.38 ± 0.01
Amorphous sperm headeX15.910.2867.748.6–71.30.13 ± 0.010.21 ± 0.01
Total abnormal sperme5644.25138.2122.4–148.40.60 ± 0.030.45 ± 0.020.47 ± 0.03
1543.8527.116.5–77.20.46 ± 0.030.45 ± 0.020.59 ± 0.03
X169.7367.852.5–93.40.40 ± 0.0170.57 ± 0.016
  • a All QTL are significant at a 5% significance threshold.

  • b Phenotype means of each genotype (±SE). D, M. m. domesticusWSB; M, M. m. musculusPWD.

  • c Lower values of PC1 are correlated with higher levels of sterility.

  • d Residual trait scores of seminiferous tubule area regressed on testis weight. Lower values are correlated with higher levels of sterility.

  • e Arcsine square-root-transformed.