“…Across this range, variation in behavior, morphology and genetic markers supports an evolutionary history of the species that includes differentiation into several major phylogenetic lineages (Ruttner, 1988;Cornuet and Garnery, 1991;Garnery et al, 1992). Based primarily on morphological characters, more than two dozen subspecies have been described within the lineages (Ruttner, 1992;Sheppard et al, 1997). These subspecies typically exhibit reduced gene flow with other such groups due to water, mountain or desert barriers and have been called "geographic races", to reflect their adaptation to specific geographic areas (Ruttner, 1988).…”