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We show that paleoclimatic oscillations were major evolutionary and biogeographic drivers in C. cerastes, which exhibits different levels of intra-specific diversity and allopatric lineage structuration across the desert. High lineage richness in the north-western Sahara contrasts with an overall lack of genetic diversity throughout the central and eastern Sahara.  Leer más.

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on-native species often appear through accidental transport or by the release of pets, but they rarely survive or come into contact with con-specifics to establish a colony. If they do come into contact with others of the same species and reproduce, the outcome tends to be a small localised colony, held in place by geographical, environmental, predatory or climate barriers.  Leer más.