Table 3.

Results of homogeneous set aggression tests

Test	αβWT	αβERKO	αERKO	βERKO
Number of nonaggressive tail rattling	4.67  ± 4.18	0.00  ± 0.00	0.00	1.50  ± 1.50
Number of aggressive pairs	2/3	0/4	0/1	3/4
Aggression latency*	418.50  ± 362.5	—	—	131.67  ± 51.95
Total aggression duration	33.67  ± 23.14	0.00  ± 0.00	0.00	75.75  ± 31.44
Number of pairs showed sexual behaviors	2/3	1/4	1/1	0/4
Sexual behavior duration	2.67  ± 1.76	3.50  ± 3.50	39.00†‡§	0.00  ± 0.00

^*Included only the pairs that showed aggression. 

^† P < 0.05 vs. αβERKO. 

^‡ P < 0.05 vs. βERKO. 

^§ P < 0.05 vs. αβWT.