Fig. 3.

Expected relationships between mitochondrial and nuclear markers in androgenetic Corbicula, given four possible scenarios. Central lines between trees indicate where taxa in the mitochondrial tree are found on the nuclear tree. Androgenetic Corbicula are in red and referred to by letter for ease of comparison. A: C. sp. A (North America, The Netherlands); B: C. sp. B (North America); C: C. sp. C (South America, The Netherlands); D: C. fluminea (Korea, Thailand); E: C. fluminea (Taiwan); F: C. fluminea (Philippines). (A) Multiple origins or single origin at * and reversion; (B) single origin with mitochondrial capture; (C) single origin with mitochondrial and nuclear capture at ^; (D) two origins at * with mitochondrial capture.