Gonadosomatic indices (GSI) of domestic and hybrid females were similar during the first fall, but the GSI of domestic females was significantly higher than that of hybrid and wild strains in the second fail.
L'indice gonadosomatique (IGS) des femelles domestiques et hybrides étaient similaires durant le premier automne, mais l'IGS des femelles domestiques était significativement plus grand que celui des femelles hybrides et sauvages durant le second automne.