Supplemental Figure 1 - Sex Differences in Patterns of Homecage Behavior in Naive Mice

Published Image

Figure S1. Sex differences in basal homecage behavior. (A) total quantification of observations across the two hour session expressed as mean value +/- SEM. (B) Donut charts showcasing the frequency of behaviors observed for males and females. (C) Line charts showing changes across the session divided into 4x30 minute bins. (D and E) are qualitative representations of the distribution of behaviors observed across the 40 timepoints.

Statistics

## MANOVA on SEX in the Naives: 
a <- m_male_data %>%
  group_by(ID,Sex,value) %>%
  summarise(
    my_count=n()
  ) 
  
b <- dcast(a,ID+Sex~value,value.var = "my_count")

b <- b %>% 
  mutate_at(c(3:12), ~replace(., is.na(.), 0))

fit <- manova(cbind(Grooming,`Social-Active`,`Social Non-Active`,`Alone-Active`,`Alone Non-Active`,`Hindpaw Lick`,`Dangling`,`In Nest`) ~ Sex, data=b)
summary(fit)
##           Df Pillai approx F num Df den Df                Pr(>F)    
## Sex        1  0.974   107.69      8     23 0.0000000000000002247 ***
## Residuals 30                                                        
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
# Because the omnibus test (above) is significant, follow up by running one-way ANOVAs for each behavior. 
## Bonferroni correct these only if forced
summary.aov(fit)
##  Response Grooming :
##             Df  Sum Sq Mean Sq F value  Pr(>F)  
## Sex          1  30.031 30.0312  7.2547 0.01146 *
## Residuals   30 124.187  4.1396                  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response Social-Active :
##             Df Sum Sq Mean Sq F value         Pr(>F)    
## Sex          1 406.13  406.13  74.405 0.000000001271 ***
## Residuals   30 163.75    5.46                           
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response Social Non-Active :
##             Df Sum Sq Mean Sq F value     Pr(>F)    
## Sex          1 52.531  52.531  22.944 0.00004214 ***
## Residuals   30 68.687   2.290                       
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response Alone-Active :
##             Df Sum Sq Mean Sq F value     Pr(>F)    
## Sex          1 312.50 312.500  21.988 0.00005597 ***
## Residuals   30 426.38  14.213                       
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response Alone Non-Active :
##             Df Sum Sq Mean Sq F value  Pr(>F)  
## Sex          1    0.5     0.5       5 0.03294 *
## Residuals   30    3.0     0.1                  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response Hindpaw Lick :
##             Df Sum Sq Mean Sq F value Pr(>F)
## Sex          1  0.000  0.0000       0      1
## Residuals   30  1.875  0.0625               
## 
##  Response Dangling :
##             Df Sum Sq Mean Sq F value               Pr(>F)    
## Sex          1 544.50  544.50  228.86 0.000000000000001398 ***
## Residuals   30  71.38    2.38                                 
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
##  Response In Nest :
##             Df Sum Sq Mean Sq F value                Pr(>F)    
## Sex          1 6132.8  6132.8  384.75 < 0.00000000000000022 ***
## Residuals   30  478.2    15.9                                  
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
  • Females spent less time grooming (F(1,30) = 7.25, p = 0.01)
  • Less socially active (F(1,30) = 74.405, p < 0.001)
  • Less socially non-active (F(1,30) = 22.94, p < 0.001)
  • Less alone active (F(1,30) = 21.988, p < 0.001)
  • Less alone non-active (F(1,30) = 5, p = 0.032)
  • Less dangling (F(1,30) = 228.86, p < 0.001)

… Because they spend so much more time than males in the nest (F(1,30) = 384.75, p < 0.001)