Figure 1. STRUCTURE results for a) bottlenose dolphin carcasses from Spencer Gulf and western coastal areas, South Australia; and b) combined datasets from bottlenose dolphin carcasses and free-ranging individuals, Spencer Gulf and western coastal areas, South Australia.

Each vertical column represents one individual dolphin, and the separation of the column into two colours represents the estimated probability of belonging to one or the other population. F = free-ranging dolphins, C = carcasses. Specific geographic locations where dolphins were found or biopsied: FI = St Francis Isles, WSA = western South Australian coast, CB = Coffin Bay, PL = Port Lincoln, NSG = North Spencer Gulf, SESG = southeast Spencer Gulf. See Figure 1 for geographic locations.