Table 5: Model summary of the stepwise multiple regression. R = coefficient of multiple correlation, R² = coefficient of multiple determination, SE = standard error of the estimate, P = p-value with exact p-value indicated in parenthesis.

Parameters/Groups	R	R2	Adjusted R2	SE	F	P
Biometric parameters
Males year 2007	0.6496	0.4219	0.3834	0.3736	F1/15 = 10.948	< 0.01 (0.0048)
Females year 2007	0.3434	0.1179	0.0903	0.2938	F1/32 = 4.2772	< 0.05 (0.0468)
Reproductive parameters
Females year 2007	0.4487	0.2013	0.1764	0.2796	F1/32 = 8.0656	< 0.01 (0.0078)
Females year 2012	0.4309	0.1857	0.1648	0.3005	F1/39 = 8.8930	< 0.01 (0.0049)