In a frog widespread in Turkey and the Caucasus, Rana macrocnemis, the proportion of frogs with the stripe increases with the altitude in mountains of the Lesser Caucasus, but not in the Greater Caucasus.
Nunha ra abundante en Turquía e no Cáucaso, Rana macrocnemis, a proporción de ras con raia increméntase coa altitude en montañas do Cáucaso Menor, pero non no Gran Cáucaso.