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. Author manuscript; available in PMC: 2015 May 19.
Published in final edited form as: Evolution. 2014 Sep 10;68(11):3134–3148. doi: 10.1111/evo.12500

Table 3.

Adult sex ratios in dwarf hamsters and their hybrids partitioned by litter. Significant values are in bold. Sex ratio was tested with a chi-square test using the pooled sex ratio of the species (50.6% male) as the null expectation.

Cross Females Males Litters % Male Litter Size ±se Females/Litter ±se Males/Litter ±se
P. campbelli 199 205 85 50.7 4.8±0.2 2.3±0.2 2.4±0.2
P. sungorus 229 226 77 49.7 5.9±0.2 3.0±0.2 2.9±0.2
P. campbelli × P. sungorus 60 97 43 61.8 1 3.7±0.2 2 1.4±0.2 2.3±0.2
1

Chi-square test, X2=8.463, df=1, P<0.001.

2

F2,202=23.665, P<0.001. Also significant in all pairwise Wilcoxon rank-sum tests, P<0.004, Bonferroni corrected α =0.025.