hypothesis that more recent uplift of previously submerged portions of land on
Sulawesi promoted diversification, and that much of its faunal assemblage is
much younger than the island itself. To do so, we combined palaeogeographical
reconstructions with genetic and morphometric data sets derived from
Sulawesi’s three largest mammals: the Babirusa, Anoa, and Sulawesi warty pig.
Our results indicate that although these species most likely colonized the area
that is now Sulawesi at different times (14 Myr ago to 2-3 Myr ago), they
experienced an almost synchronous expansion from the central part of the
island. Geological reconstructions indicate that this area was above sea level for
most of the last 4 Myr, unlike most parts of the island. We conclude that
emergence of land on Sulawesi (~1–2 Myr) may have allowed species to expand
synchronously. Altogether, our results indicate that the establishment of the
highly endemic faunal assemblage on Sulawesi was driven by geological events
over the last few million years.
|Journal||Proceedings of the Royal Society B-Biological Sciences|
|Publication status||Published - 11 Apr 2018|